Molar mass is ratio of mass and the amount of same substance whose mass we have taken.Yes,I am confident in the identity of the unknown referencing % error.
In science, the molar mass (M) of a chemical compound is characterized as the proportion between the mass and how much substance (estimated in moles) of any example of said compound. The molar mass is a mass, not sub-atomic, property of a substance. The molar mass is a normal of many occurrences of the compound, which frequently shift in mass because of the presence of isotopes. Most usually, the molar mass is figured from the standard nuclear loads and is in this manner an earthly normal and a component of the overall wealth of the isotopes of the constituent particles on The planet. The molar mass is fitting for changing over between the mass of a substance and how much a substance for mass amounts.
Freezing point depression is a drop in the base temperature at which a substance freezes, caused when a more modest measure of another, non-unpredictable substance is added. Models incorporate adding salt into water (utilized in frozen yogurt creators and for de-icing streets), liquor in water, ethylene or propylene glycol in water (utilized in radiator fluid in vehicles), adding copper to liquid silver (used to make bind that streams at a lower temperature than the silver pieces being joined), or the blending of two solids like pollutions into a finely powdered drug.
To know more about molar mass,viist here:
https://brainly.com/question/22997914
#SPJ4
How many liters would you need to make a 1M solution if you have 6 mol of NaOH?
0.271 mol
.029 mol
3485 M
34.9 M
You would need 34.9 liters of a 1M solution to make 6 mol of NaOH.
What is mol?Mol (mol) is the unit of measurement used in chemistry to measure the amount of a substance. It is defined as the amount of a substance that contains the same number of particles (atoms, molecules, ions, etc.) as there are atoms in 12 grams of carbon-12. The number of particles in a mole (mol) of a substance is known as Avogadro's number, or 6.022 x 10^23. This number is the same for all elements and molecules, regardless of their mass. A mole is an amount and not a mass, and is usually expressed as grams per mole (g/mol). This allows for the comparison of different substances and their relative amounts. For example, one mole of carbon dioxide (CO2) has a mass of 44.01 g/mol, while one mole of water (H2O) has a mass of 18.02 g/mol. Mol is also used to calculate the amount of a solution or mixture of substances, as well as the amount of energy released or absorbed during a chemical reaction.
To learn more about mol
https://brainly.com/question/29367909
#SPJ1
Two chemicals reaction are occurring in beaker A and beaker B. In beaker A Temperature changes from 25 to 40 degree. In beaker B temperature changes
from 25 to 20 degree
The change in temperature during a chemical reaction can provide information about whether the reaction is exothermic (releases heat) or endothermic (absorbs heat).
Using Temperature Changes to Identify Exothermic and Endothermic Chemical ReactionsThe change in temperature of a chemical reaction is often an important indicator of the energy absorbed or released during the reaction. In this case, we have two different reactions occurring in two separate beakers, with different temperature changes.
In beaker A, the temperature increases from 25 to 40 degrees. This suggests that the reaction in beaker A is exothermic, meaning that it releases heat to the surroundings. The reaction is giving off energy, which is reflected in the temperature increase of the beaker.
In beaker B, the temperature decreases from 25 to 20 degrees. This suggests that the reaction in beaker B is endothermic, meaning that it absorbs heat from the surroundings. The reaction is taking in energy, which is reflected in the temperature decrease of the beaker.
It's worth noting that the temperature change alone is not sufficient to determine the nature of the reaction (i.e. exothermic or endothermic). Other factors, such as the reaction equation and the properties of the reactants and products, must also be considered. However, temperature change can be a useful clue in identifying the energy changes that occur during a chemical reaction.
To know more about exothermic and endothermic chemical reactions,
visit:https://brainly.com/question/29039149
#SPJ4
consider the compounds ferrocene, monoacetylferrocene, and diacetylferrocene. which is the least polar?
Due to its symmetrical structure and the two cyclopentadienyl rings that surround the core iron atom, ferrocene is the least polar of the three compounds. Contrarily, the polar carbonyl groups in monoacetylferrocene and diacetylferrocene increase their overall polarity.
The division of the electric charge within a molecule is referred to as polarity, which is a key concept in chemistry. A molecule's polarity, which in turn impacts its physical and chemical properties, is determined by how many electrons are distributed around the atoms in the molecule. Depending on the electronegativity differences between the atoms and the molecular geometry, a molecule can be categorised as polar or nonpolar. Polar molecules have a partial charge or a positive and negative end due to an unequal distribution of electrons. Because of this, polar molecules interact with other molecules in a distinct way, giving them special characteristics including solubility, boiling point, and reactivity. In many areas of chemistry, such as organic chemistry, biochemistry, and material science, understanding polarity is crucial.
Learn more about polarity here:
https://brainly.com/question/1555942
#SPJ4
suppose you separate a 2.40 mixture of sand and salt and recover 1.49 g of salt. what is the perecent by mass of salt in the mixture?
The correct answer is
The percent by mass of salt in the mixture is 62.08%
A component in a particular combination or a concentration can be described using the mass percent symbol. The mass of solute present in a certain mass of solution is indicated by the mass percentage used to characterize the solution composition. The concentration of the solute is expressed in units of mass or moles. The mass percent is the ratio of the mass of the solute in a solution to the mass of the entire solution. Since this type of concentration, which is often calculated for solid- and liquid-phase solutions, is reported as a percentage, it must also be multiplied by 100 as shown below.
Minimum (G) 100 equals Mass Percent.
Since a solution consists of both a solute and a solvent, its total mass is equal to the sum of the masses of the two components. As a result, the following equation may also be used to calculate the mass percent of a solution.
Mass Percent = msolute(g), msolvent(g), and msolute(g), multiplied by 100
To learn more about Percent by Mass click the link below
brainly.com/question/13592376
#SPJ4
What compounds break up into ions in solution?
Answer:B
Explanation:
an ice freezer behind a restaurant has a freon leak, releasing 32.77 g 32.77 g of c2h2f3cl c 2 h 2 f 3 cl into the air every week. if the leak is not fixed, how many kilograms of fluorine will be released into the air over 6 months? 6 months? assume there are 4 weeks in a month.
Amount of fluorine which will be release into the air over 6 months is 0.372Kg if an ice-freezer releases an amount of 32.77g freon.
Fluorine is a compound component with the image F and nuclear number 9. It is the lightest halogen and exists at standard circumstances as a profoundly harmful, light yellow diatomic gas. As the most electronegative responsive component, it is very receptive, as it responds with any remaining components with the exception of the light dormant gases.
Among the components, fluorine positions 24th in widespread overflow and thirteenth in earthbound overflow. Fluorite, the essential mineral wellspring of fluorine which gave the component its name, was first portrayed in 1529; as it was added to metal minerals to bring down their softening focuses for purifying, the Latin action word fluo signifying 'stream' gave the mineral its name. Proposed as a component in 1810, fluorine demonstrated troublesome and perilous to isolate from its mixtures, and a few early experimenters kicked the bucket or supported wounds from their endeavors.
First,we need to find number of total weeks in 6 months is =6×4 =24weeks
Amount of mass leak of freon compound(C₂H₂F₃Cl)=32.77g
Now,mass of fluorine will be released=(Fluorine mass in freon/Moloecular mass of freon)×Leak rate
=>Mass of fluorine will be released= [(19×3) / 118.5]×32.23
=>Mass of fluorine will be released=1837.11/118.5
=>Mass of fluorine will be released=15.50g/week.
Therefore,total mass released in 6 months=15.50g/week × 24=372.072g
Hence, amount of fluorine which will be released is 0.372Kg.
To know more about fluorine, visit here:
https://brainly.com/question/27952083
#SPJ4
What is the average velocity of an object that travels a total displacement of
24 meters in 3 seconds? Round to 1 sig fig. Do not include units in your
answer.
The average velocity of an object that travels a total displacement of 24 meters in 3 seconds is 8 m/sec.
What do you mean by an average velocity ?The term average velocity is defined as the ratio of the total distance traveled by the object to the total time taken by the object to cover that amount of distance.
Average velocity is calculated by dividing the displacement by the total time.
Given:
Displacement = 24 meters
Time = 3 seconds
By using the formula as follows:
Average speed = Total distance / Total time
S = 24 / 3
S = 8 m/sec.
Thus, the average speed of the object is 8 m/sec’s.
To learn more about an average velocity, follow the link;
https://brainly.com/question/862972
#SPJ9
the presence of a plane of symmetry in a molecule is a quick way of determining whether a molecule is chiral or not. which structure(s) contain a plane of symmetry? a 5 carbon ring has a double bond between carbons 1 and 2. there is a wedged bond to o h on carbon 3. a 5 carbon ring has an wedged bond to hydroxy on carbon 1. a 5 carbon ring has a wedged bond to o h on carbon 1 and carbon 3. which molecule is chiral? a 5 carbon ring has a wedged bond to o h on carbon 1 and carbon 3. a 5 carbon ring has a double bond between carbons 1 and 2. there is a wedged bond to o h on carbon 3. a 5 carbon ring has a wedged bond to hydroxy on carbon 1.
A simple technique to tell if a molecule is not chiral is to look at its plane of symmetry.
How can you tell if a molecule is symmetrical in a plane?The plane of symmetry of each molecule is identified by drawing an illogical line between them. The molecule is divided into two identical halves according to the plane of symmetry. The plane of symmetry of a molecule can be found by rotating the carbon-carbon sigma bond.
What do you mean when you say a molecule's plane of symmetry?Complete solution, step by step: A molecule's imaginary division via which it is divided bilaterally into two equal halves is known as its plane of symmetry. They are mirror images of one another in both parts.
To know more about chiral visit:-
https://brainly.com/question/13667509
#SPJ1
4P + 5O2 → 2P2O5
What are the reactants in this chemical equation?
Answer:
P and O₂Explanation:
Greetings!!!
ReactantsThe substances which participate in a chemical reaction, are called reactants. A chemical reaction describes the process by which atoms, the fundamental building blocks of matter, rearrange themselves to form new combinations. Reactants are raw materials that react with one another.
Also, The substance(s) to the left of the arrow in a chemical equation are called reactants.
Hope it helps!!!
what is the relationship between reactivity and the location of each alkaline metal in the periodic table
The reactivity of alkaline metals generally increases as you move down the group in the periodic table. This means that the most reactive alkaline metals are located at the bottom of the group and the least reactive are located at the top.
The reason for this trend is due to the electronic configuration of the atoms of these elements. As you move down the group, the outermost electron becomes increasingly farther from the positively charged nucleus, and as a result, the electron is held less tightly to the atom. This makes it easier for the atom to lose this outermost electron, resulting in greater reactivity.
In addition, as you move down the group, the atomic radius of the alkaline metals increases. This increase in atomic size leads to a decrease in ionization energy, which is the energy required to remove an electron from an atom. This makes it easier for the atoms to lose electrons, increasing their reactivity.
Therefore, the trend in reactivity of alkaline metals from the top to the bottom of the periodic table is as follows: Lithium (Li) is the least reactive, followed by Sodium (Na), Potassium (K), Rubidium (Rb), and Cesium (Cs), which is the most reactive.
Learn more about periodic table here: brainly.com/question/1173237
#SPJ4
of the following, which gives the correct order for atomic radius for mg, na, p, si and ar?
The proper order is Na > Mg > Si > P > Ar. As a result of the valence electrons' low nucleostatic attraction, sodium (Na) has the biggest atomic radius.
The electrons' orbitals get bigger and bigger as we go from top to bottom, increasing the atomic size.S and Ar are hence real. S is the largest element on the periodic table since it is on the left. Na has the most atoms of any of the other elements mentioned. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. The atomic radius grows in a group from top to bottom and decreases across a period, as seen in the figures below. The smallest element is therefore helium, whereas the largest is francium.
Learn more about atomic radius here:
https://brainly.com/question/13607061
#SPJ4
explain why the spectra belong with the two alcohols. did the spectra you picked match your initial description? can you differentiate between the two alcohols and definitively identify them?
Because the spectra exhibit distinctive peaks of OH functional groups, they are consistent with the two alcohols. The spectra confirm what was initially described.
The distinct peak patterns in the spectra of the two alcohols allow for their identification and differentiation. It is hard to give a detailed justification for why the spectra belong with each of the two alcohols without knowledge of the spectra of the two alcohols. Many methods, including Infrared (IR) spectroscopy, Gas Chromatography (GC), and Nuclear Magnetic Resonance, can be used to distinguish between the two alcohols and conclusively identify them based on their spectra (NMR). These methods may be used to determine the functional groups that are present in molecules, their molecular structure, and their location within the molecules. A comparison with the known spectra of other alcohols may be conducted in light of the specific patterns or peaks seen in the spectra, and the precise identification can then be achieved.
learn more about alcohols here:
https://brainly.com/question/16975086
#SPJ4
what boiling point would you predict for an aqueous sodium hydroxide solution that is 30 mole percent naoh , assuming no ion pairing in solution? express your answer in degrees celsius to one decimal place.
The solution of 30 moles percent NaOH is anticipated to boil at 100.4 °C.
What is the boiling point?The temperature at which a pure material changes from the liquid to the gaseous phase is known as the boiling point of the substance. The liquid's vapour pressure has now reached its equilibrium state, matching the pressure that has been applied to it.
The formula for predicting the boiling point of an aqueous sodium hydroxide (NaOH) solution is T = Kb * molality, where T is the boiling point elevation, Kb is the constant for predicting the boiling point of water (0.512 °C/m), and molality is the molality of the solution.
NaOH has a 40 g/mol molar mass, hence we have:
30 g NaOH / 40 g/mol = 0.75 mol NaOH
The number of moles of water in the solution is:
100 g solution - 30 g NaOH = 70 g H2O
The molar mass of water is 18 g/mol, so we have:
70 g H2O / 18 g/mol = 3.89 mol H2O
Therefore, the molality of the solution is:
molality = 0.75 mol NaOH / 3.89 kg H2O = 0.1928 mol/kg
ΔT = Kb * molality = 0.512 °C/m * 0.1928 mol/kg = 0.0986 °C
we can use the boiling point elevation formula for non-electrolytes:
ΔT = Kf * molality
ΔTf = - Kf * molality,
ΔTb = -ΔTf = Kf * molality = 1.86 °C/m * 0.1928 mol/kg = 0.3580 °C
Boiling point of solution = 100 °C + 0.3580 °C = 100.4 °C (to one decimal place)
To know more about boiling point visit:-
https://brainly.com/question/2153588
#SPJ1
Assertion: Hydrogen is not used as fuel even though it has high calorific value.
Reason: Combustion of hydrogen is explosion.
Hydrogen has a high calorific value, meaning that it can produce a lot of energy when burned.
What is high calorific value?
High calorific value (HCV) is the amount of energy released when a fuel is burned. It is measured in joules or kilojoules per kilogram of fuel, and is used to compare different types of fuel. HCV is important, because it helps to determine the efficiency of a fuel, as well as its cost effectiveness. The higher the HCV, the more energy a fuel will produce from a given amount, making it cost effective and efficient. Different fuels have different HCV values, and the higher the HCV, the more efficient the fuel is.
However, it is not used as a fuel due to its explosive nature. When hydrogen combusts, it produces large amounts of heat and light in a very short period of time. This can cause an explosion if the reaction is not properly controlled. Therefore, hydrogen is not used as a fuel in most applications due to safety concerns.
To learn more about high calorific value
https://brainly.com/question/29429802
#SPJ1
SELECT ALL THAT APPLY: Which of the following statements describe BOTH Fission and Fusion?
HINT: If it only describes 1 or other other, do not select it.
causes formation of heavier elements in stars
results in products that are different element(s)
reactions are used for nuclear power plants
occurs in the natural world and is essential to life on earth
splits the nucleus
reactions can be used in nuclear weapons (bombs)
release large amounts of energy
A) Both involve the release of energy - Yes. Nuclear fission and fusion both involve the release of energy through the conversion of mass.
What is fission ?Fission is a process where a single large nucleus splits into two or more smaller nuclei, releasing a large amount of energy in the process. This energy is released as a result of the strong nuclear force binding the nucleus together. Fission can occur naturally, as when a heavy nucleus such as uranium-235, splits into two lighter nuclei such as barium-141 and krypton-92. It can also be induced by bombarding the nucleus with neutrons. Fission is used to generate energy in nuclear power plants and can also be used to produce weapons of mass destruction. Fission reactions also play an important role in the life cycle of stars, providing a source of energy and synthesizing new elements.
To learn more about fission
https://brainly.com/question/495763
#SPJ1
When a liquid freezes, where does the released energy come from? when a gas condenses, where does the released energy come from?
As a liquid freezes, its inherent energy is what causes the energy to be released. As a gas condenses, its internal energy is what releases the energy.
As a liquid freezes, heat is lost by the liquid as it transitions from a liquid to a solid, which releases energy. The liquid molecules are separated from one another by the heat energy, which causes them to solidify into a crystal lattice structure. This process continues until all of the liquid has frozen, with the system's temperature remaining constant. The heat that a gas emits as it transitions from a gas to a liquid, which causes them to move closer to one another and form a liquid, is released when a gas condenses. The system's temperature stays constant throughout this process until all the gas has condensed.
learn more about energy here:
https://brainly.com/question/11399976
#SPJ4
Is this 4-ethyl-5,5-dimethyl-2-hexyne or 4-isobutyl-2-hexyne? Give a reason please. Thanks
The name of the compound given in the question above is 4-ethyl-5,5-dimethyl-2-hexyne
How do I know which name is correct for the given structure?To know the correct name of the compound illustrated in the diagram above, we shall obtain the IUPAC name of the compound.
The IUPAC nomenclature gives the standard for naming compounds. This is illustrated below:
The functional group in the compound is Alkyne since it contains triple bond and it is located at carbon 2The longest continuous chain is 6. Thus, the parent name is hexyneThere are two methyl groups (CH₃) at carbon 5 and one ethyl group (CH₂-CH₃) at carbon 4. Remember that the numbering must favor the triple bond.Thus, with the above information, the name of the compound is 4-ethyl-5,5-dimethyl-2-hexyne
Learn more about IUPAC name:
https://brainly.com/question/16180944
#SPJ1
What percent of Mg(PO4)2•4H2O is water?
The percent of water in Mg(PO₄)₂•4H₂O is 27.4%. including as a compost for plants, in the creation of pottery, and as a food added substance.
Evaluating :The molar mass of Mg(PO₄)₂•4H₂O is:
24.31 g/mol (Mg) + 2 x 30.97 g/mol (P) + 8 x 16.00 g/mol (O) + 4 x (2.02 g/mol (H) + 16.00 g/mol (O))
= 262.86 g/mol
The mass of water in one mole of Mg(PO₄)₂•4H₂O is 4 x 18.02 g/mol
= 72.08 g/mol.
The percent of water in Mg(PO₄)₂•4H₂O is:
(72.08 g/mol / 262.86 g/mol) x 100%
= 27.4%
Therefore, the percent of water in Mg(PO₄)₂•4H₂O is 27.4%.
What is Mg(PO₄)₂•4H₂O?Mg(PO₄)₂•4H₂O is a synthetic compound made out of magnesium particles (Mg₂+) and phosphate particles (PO₄³⁻) in a 1:2 proportion, as well as four particles of water (H₂O) that are artificially bound to the compound.
How is Mg(PO₄)₂•4H₂O utilized?Mg(PO₄)₂•4H₂O is utilized in different modern applications, including as a compost for plants, in the creation of pottery, and as a food added substance. It is additionally utilized in the readiness of magnesium-based materials for biomedical applications.
Learn more about percent of magnesium :
brainly.com/question/8130111
#SPJ1
which response lists all the following pairs that are miscible liquids? i. hexane (c6h14) and water ii. methanol (ch3oh) and water iii. octane (c8h18) and carbon tetrachloride (ccl4) group of answer choices ii and iii iii only i and iii ii only i and ii flag question: question 7
Pairs which are miscible liquids is ii)methanol(CH₃OH) and water and iii)octane(C₈H₁₈) and carbon tetrachloride(CCl₄).So,correct options are ii and iii.
Miscible liquids are liquid substances that can blend in all extents to frame a homogeneous arrangement. All in all, miscible liquid structure when two fluids completely disintegrate in one another at any concentration.The expression miscibility portrays this capacity to blend in with one another, and this term is for the most part utilized with fluids, yet it might have applications seeing solids and gases also.
For instance, miscibility of water and ethanol is normal where water and ethanol go about as miscible liquids by blending in with one another in every conceivable extent. While considering natural mixtures, the weight level of hydrocarbon binds will generally decide the miscibility of the natural compound with water. For example ethanol contains two carbon iotas where 1-butanol contains four carbon molecules (both are alcohols), yet ethanol is miscible with water while 1-butanol isn't.
Frequently, the miscibility of liquids is resolved optically. In the event that the two liquids consolidate and make a reasonable fluid, the two liquids are miscible with one another. On the off chance that the consolidated liquids seem overcast in the wake of blending, those fluids are immiscible with one another.
To know more about miscible liquids,visit here:
https://brainly.com/question/29641339
#SPJ4
(Complete question) is:
Which response lists all the following pairs that are miscible liquids.?
i. hexane (C₆H₁₄) and water ii. methanol (CH₃OH) and water iii. octane (C₈H₁₈) and carbon tetrachloride (CCl₄) iv)all of these
a 1.375 g sample of a sugar found in seaweed is burned completely in oxygen to give 1.993 g of co2 and 0.9519 g of h2o. what is the empirical formula of this sugary substance?
We must establish the ratio of the atoms of each element in the compound in order to derive the empirical formula for sugar.
In chemistry, the simplest whole-number ratio of each element's atoms in a chemical compound is referred to as the empirical formula. It stands for the lowest component of a substance that nevertheless has its chemical characteristics. The empirical formula is crucial for figuring out a substance's makeup and comprehending its chemical behaviour. The empirical formula simply provides the relative proportions of the atoms, as opposed to the molecular formula, which provides the precise number of atoms in a molecule. The relative proportions of the elements in a compound must be known in order to derive the empirical formula of the substance. This information can be collected through tests like combustion analysis or elemental analysis.
Learn more about empirical formula here:
https://brainly.com/question/29506551
#SPJ4
How do you find the force of attraction between a cation and anion?
The force of attraction between a cation and anion can be calculated using Coulomb's Law. Coulomb's Law states that the force between two charged particles is proportional to the product of their charges and inversely proportional to the square of the distance between them.
The equation for Coulomb's Law is given by:
F = k x q1 x q2 / r²
where F is the force of attraction, k is the Coulomb constant (8.98755 x 10^9 Nm^2/C^2), q1 and q2 are the magnitudes of the charges of the cation and anion (in Coulombs), and r is the distance between the cation and anion.
By knowing the charges of the cation and anion and the distance between them, the force of attraction can be calculated using Coulomb's Law. The magnitude of the force of attraction will depend on the magnitude of the charges of the cation and anion and the distance between them. If the charges are of the same sign, the force will be repulsive, while if the charges are of opposite sign, the force will be attractive.
Learn more about force here:
https://brainly.com/question/24035965
#SPJ4
how do you separate and recover the basic compound from a mixture containing an acidic compound and a neutral compound?
One common method for separating and recovering a basic compound from a mixture containing an acidic compound and a neutral compound is through a technique called liquid-liquid extraction
In liquid-liquid extraction, the mixture is dissolved in a suitable solvent, which is then mixed with another immiscible solvent that has different affinities for the different components in the mixture. The two solvents will form separate layers, allowing for the isolation of each component.
To extract the basic compound, an acidic aqueous solution is typically used to protonate the basic compound and convert it into a water-soluble salt. The salt can then be extracted from the organic layer by adding the acidic aqueous solution and shaking the mixture. The acidic aqueous solution will then be separated from the organic layer and the basic compound can be recovered by adding a basic solution to the acidic solution to neutralize the salt and free the basic compound.
To learn more about liquid-liquid extraction Click here:
brainly.com/question/13345735
#SPJ4
Can someone please help me this is Chemistry 1 and I need to know how they got this answer like working out the problems step by step to write on my paper to show that I showed my work.
The energy is 6.6 * 10^-18 J.
What is the energy of a photon?Photons are quantized packets of electromagnetic energy, which are sometimes referred to as light particles. The energy of a photon determines its color, as well as its ability to interact with matter. Photons with lower energy have longer wavelengths and lower frequencies, and are perceived as red or infrared light. Photons with higher energy have shorter wavelengths and higher frequencies, and are perceived as blue or ultraviolet light.
Given that the wavelength is 3 * 10^-6 cm or 3 * 10^-8 m We would have that;
E = hc/λ
E = energy
h = plan's constant
c = speed of light
λ = wavelength
E= 6.6 * 10^-34 * 3 * 10^8/3 * 10^-8
E = 6.6 * 10^-18 J
Learn more about photons:https://brainly.com/question/20912241
#SPJ1
What is the subatomic particle that gives the nucleus an overall positive charge?
The correct answer is that proton is the subatomic particle that gives the nucleus an overall positive charge.
A proton is a stable subatomic particle with the designations p, H+, or 1H+ with an electric charge of +1 e. (elementary charge). Its mass is just somewhat less than a neutron and 1,836 times more than that of an electron (the proton–electron mass ratio). Protons and neutrons, which have masses of around one atomic mass unit each, are together referred to as "nucleons" (particles present in atomic nuclei).
One or more protons can be found in the nucleus of every atom. They provide the main electrical attraction and holding power for the atomic electrons. An element may be identified by its atomic number, which is the quantity of protons in its nucleus (represented by the symbol Z).
To learn more about Proton click on the link below
brainly.com/question/30460511
#SPJ4
What is the effect of sample size on a melting point measurement?
The sample size of a substance can have a significant effect on the measurement of its melting point. Generally, the smaller the sample size, the less accurate and reproducible the melting point measurement will be.
One of the main reasons for this is that small samples are more substance susceptible to thermal gradients, which can cause the temperature to vary within the sample and result in an incorrect melting point. In a small sample, the heat from the heating source may not be evenly distributed, leading to localized melting and temperature changes that can result in an inaccurate melting point.Another factor that can affect the melting point of a small sample is the presence of impurities or contaminants. Impurities can act as nucleation sites, causing the sample to start melting at a lower temperature, or they can alter the thermal properties of the sample, leading to a shift in the melting point.
to learn the about melting point here:
https://brainly.com/question/28475019
#SPJ4
2. 0 g calcium (Ca) reacts with 1. 9 g fluorine (F2) to form 3. 9 g of calcium fluoride (CaF2)
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction, only rearranged. Therefore, the total mass of the reactants must equal the total mass of the products.
Starting with 0 g of calcium (Ca) and 1.9 g of fluorine (F2), we can calculate the total mass of the reactants:
Total mass of reactants = Mass of Ca + Mass of F2
Total mass of reactants = 0 g + 1.9 g
Total mass of reactants = 1.9 g
According to the problem statement, the reaction forms 3.9 g of calcium fluoride (CaF2). Therefore, the total mass of the products is:
Total mass of products = Mass of CaF2
Total mass of products = 3.9 g
Since the total mass of the reactants must equal the total mass of the products, we can set these two expressions equal to each other:
Total mass of reactants = Total mass of products
1.9 g = 3.9 g
This is a contradiction, as it is impossible for the mass of the reactants to be less than the mass of the products. Therefore, there must be an error in the problem statement or the given values.
To learn more about mass refer to this link
https://brainly.com/question/19694949
#SPJ4
based on the animation, how many electron carriers are reduced in the krebs cycle only?
In total, during cellular respiration, 10 electron carriers (2 from glycolysis and 8 from the Krebs cycle) are reduced, generating a total of 30 ATP molecules through the electron transport chain.
According to the animation, the Krebs cycle is not the only step in cellular respiration where electron carriers are reduced. In fact, the Krebs cycle is only one of the three major steps in cellular respiration that generate electron carriers.
During glycolysis, which takes place in the cytoplasm of the cell, two molecules of NAD+ are reduced to two molecules of NADH. This is the first step in the generation of electron carriers in cellular respiration.
During the Krebs cycle, which takes place in the mitochondrial matrix, two molecules of acetyl-CoA are oxidized to produce six molecules of NADH and two molecules of FADH2. These electron carriers then enter the electron transport chain to produce ATP.
Finally, during oxidative phosphorylation, which also takes place in the mitochondria, the NADH and FADH2 generated during glycolysis and the Krebs cycle donate electrons to the electron transport chain, which drives the production of ATP.
To learn more about Krebs cycle click here:
brainly.com/question/13153590
#SPJ4
What is the number of atoms in a volume of 7.6 x 10^3 millimeters of krypton gas at STP?
a) 1.48 x 10^23
b) 2.03 x 10^23
c) 3.01 x 10^23
d) 3.90 x 10^23
e) 6.02 x 10^23
The number of moles of gas in a volume of [tex]7.6 x 10^3[/tex]millimeters is:
[tex]n = (1 atm) x (7.6 x 10^-3 L) / (0.08206 L∙atm/(mol∙K) x 273.15 K) = 3.01 x 10^-4 moles[/tex]
Now, we can find the number of atoms in [tex]3.01 x 10^-4[/tex]moles of krypton gas:
[tex](3.01 x 10^-4 moles) x (6.02 x 10^23 atoms/mole) = 1.81 x 10^20 atoms[/tex]
How is krypton gas made?Krypton gas is a noble gas in the Earth's atmosphere in small amounts. It can be separated from the air by a process known as fractional distillation, which takes advantage of the differences in boiling points of the different air components.
How can you store krypton gas?Once krypton is separated from air, it can be stored as a gas in pressurized containers for various applications. Krypton is also produced in nuclear reactors, as a byproduct of fission reactions.
To learn more about temperature, visit here:
brainly.com/question/7510619
#SPJ1
Which of the following is a catastrophic event that can impact a human settlement?
a. volcanic eruption
b. soil depletion
c. dwindling water supply
d. none of these
volcanic eruption is the catastrophic event that impacts the human settlement as compared to the other options.
What are Catastrophic events?Catastrophic events are sudden, natural or man-made, situations where change & destruction occur. All catastrophic events are the Earth's way of maintaining equilibrium during change.
Natural disasters are catastrophic events with atmospheric, geological, and hydrological origins (e.g., droughts, earthquakes, floods, hurricanes, landslides) that can cause fatalities, property damage and social environmental disruption.
Natural disasters like soil depletion also take a period of time. Dwindling water supply is also itself an alarm before scarcity of water begins.
so we can conclude that option a is the correct option among the given options.
Learn more about human here:https://brainly.com/question/26502157
#SPJ1
for which of the following pairs are the atoms most likely to form an ionic bond with each other? group of answer choices carbon and sulphur sodium and iodine iodine and oxygen sodium and potassium
Out of the given pairs of atoms, sodium and iodine are most likely to form an ionic bond with each other.
Ionic bonds occur between atoms with significantly different electronegativities, where one atom donates an electron(s) to another atom, resulting in the formation of a positively charged cation and a negatively charged anion that are then held together by electrostatic forces.
Sodium (Na) has one valence electron and a relatively low electronegativity, while iodine (I) has seven valence electrons and a relatively high electronegativity. Therefore, when sodium and iodine come into contact, sodium is likely to donate its valence electron to iodine to form the ionic compound sodium iodide (NaI).
Sodium and potassium have similar electronegativity values and are both alkali metals, making them less likely to form ionic bonds with each other since their properties are similar.
Learn more about ionic bond here:
https://brainly.com/question/11527546
#SPJ4
