Using stoichiometry and the balanced chemical equation, 58.6 g of KNO3 produces 0.724 mol of O2, as 4 moles of KNO3 produce 5 moles of O2. The answer is D.
To determine the number of moles of oxygen formed when 58.6 g of KNO3 decomposes, we need to use stoichiometry and the balanced chemical equation provided.
From the balanced chemical equation, we can see that 4 moles of KNO3 produce 5 moles of O2. Therefore, we can use a proportion to find the number of moles of O2 produced when 58.6 g of KNO3 decomposes:
(5 mol O2 / 4 mol KNO3) = (x mol O2 / 58.6 g KNO3)
Solving for x, the number of moles of O2 produced, we get:
x = (5/4) * (58.6 g KNO3 / 101.11 g/mol)
= 0.725 mol O2
Rounding to the appropriate number of significant figures, we get 0.724 mol O2, which corresponds to option (D). Therefore, the answer is D) 0.724 mol O2.
To learn more about stoichiometry Click here:
brainly.com/question/22288091
#SPJ4
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
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
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
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
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 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
discuss the molar mass and identity of your unknown based on the freezing point depression. are you confident in the identity of the unknown referencing % error
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
different substances have different ____________ , or abilities to reflect light.
The ability of a substance to reflect light is called Luster. So different substances have different Luster, the ability to reflect light.
Luster is one of the optical properties of materials. Usually metals are known for exhibiting luster. It is both a quantitative and qualitative measure. Luster is the property of reflecting all or some of the incident rays. Metals are lustrous, means they have a shiny surface. Some non-metals like diamonds is also lustrous in nature.
Another quantity that is used synonymous to luster is reflectance. It is the measurement of the light reflected compared to the incident rays falling on a surface.
For more information regarding optical properties of materials, kindly refer
https://brainly.com/question/28169869
#SPJ4
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
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
Why do Americans allow companies to dump their electronic waste products in developing countries?
A recycling facility's running costs are increased by the U.S.'s stringent environmental and safety standards, which recyclers must follow.
Some recycling facilities have discovered that processing their hazardous e-waste offshore costs a lot less money than treating it domestically.
Despite having the knowledge and means to recycle e-waste safely and meticulously, the United States nevertheless exports some of its e-waste to underdeveloped nations due to the latter's access to cheap labor.
Hazardous elements can be found in several types of e-waste. By using risky processing methods like burning, crushing, or acid baths, toxins including lead, mercury, cadmium, and arsenic may leak into the ground or the atmosphere. This is where the problem's global scope starts. For wealthier nations, it is frequently less expensive to ship plastic garbage containers halfway across the world to be "recycled" in developing nations rather than deal with the rubbish themselves.
Learn more about environmental here:
https://brainly.com/question/1176724
#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
The element lithium has two naturally occurring isotopes. One of these has a mass of 6. 0151 amu and a natural abundance of 7. 49%. A second isotope has a mass of 7. 0160 amu and a natural abundance of 92. 51%. Calculate the atomic mass of lithium. Enter your answer in the provided box
The element lithium has two naturally occurring isotopes. Lithium i.e. (Li) have a atomic mass of value 6.94 amu.
To calculate the atomic mass of lithium, we need to find the weighted average of the masses of its two isotopes based on their natural abundance. The formula for this calculation is:
[tex]Atomic mass = (mass of isotope 1 * abundance of isotope 1) + (mass of isotope 2 * abundance of isotope 2)[/tex]
Putting values for two isotopes of lithium:-
[tex]Atomic mass = (6.0151 amu * 0.0749) + (7.0160 amu * 0.9251)[/tex]
[tex]Atomic mass = 0.4497595 + 6.487676[/tex]
[tex]Atomic mass = 6.937435 amu[/tex]
Hence, the atomic mass of lithium is approx. 6.94 amu.
To know more about lithium please refer: https://brainly.com/question/3487113
#SPJ4
What compounds break up into ions in solution?
Answer:B
Explanation:
which of the following best describes the formation of the bond shown in figure 1 ? responses an ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid. an ionic bond is formed between a carbon atom of one amino acid and the nitrogen atom of the other amino acid. an ionic bond is formed when the negative charge of an oh oh group is balanced by the positive charge of a hydrogen ion. an ionic bond is formed when the negative charge of an o h group is balanced by the positive charge of a hydrogen ion. a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of h2o h 2 o . a covalent bond is formed between a carbon atom and a nitrogen atom along with the formation of h 2 o . a covalent bond is formed that replaces the hydrogen bond between the oh oh group and the h
Together with the creation of H2O, a covalent bond is created between a carbon and a nitrogen atom.
When two amino acids come together, a peptide bond is created.
It entails the release of water together with the fusion of the carboxyl group of one amino acid (COOH) with the amino group of another amino acid (NH2) (H2O).
Because a carbon atom (C) and a nitrogen atom (N) share electrons, a peptide bond is a sort of covalent link (N).
Hence, along with the creation of H2O, the reaction depicted in the graphic attached also results in the development of a covalent bond between a carbon atom and a nitrogen atom.
To learn more about Covalent bond :
https://brainly.com/question/19382448
#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
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
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
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
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
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
how many electrons can be assigned to orbitals designated by the quantum numbers n = 6, ℓ = 1?
The maximum number of electrons that can be assigned to orbitals designated by the quantum numbers n = 6, ℓ = 1 is six.
Quantum numbers n and ℓThe quantum number n represents the principal energy level of an atom. The quantum number ℓ represents the sublevel or subshell of an atom.
For any given principal quantum number, n, there is a maximum of two electrons that can be assigned to any particular orbital of the same angular momentum quantum number, ℓ. In this case, n = 6, meaning that the orbital is part of the sixth energy level, and ℓ = 1, meaning that the orbital is a p-orbital and there is a maximum of six electrons that can be assigned in p-orbital:
↑↓ ↑↓ ↑↓
6px 6py 6pz
Therefore, the maximum number of electrons that can be assigned to this orbital is six.
Learn more about quantum numbers here https://brainly.com/question/2292596
#SPJ11
The combustion of butane in oxygen (air) is represented in the equation 2c_4H
The combustion of butane in oxygen (air) is represented in the balanced chemical equation as 2 C₄H₁₀ + 13 O₂[tex]\rightarrow[/tex] 8 CO₂ + 10 H₂O.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
Learn more about chemical equation,here:
https://brainly.com/question/28294176
#SPJ9
Your question is incomplete but most probably your full question was:The combustion of butane in oxygen (air) is represented in the equation 2 C₄H₁₀ + 13 O₂[tex]\rightarrow[/tex]
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
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
consider a process in which an ideal gas is compressed to one-half of its original volume at constant temperature. calculate the entropy change per mole of gas.
S/mol = -(8.314 J/(molK)) ln(2) -5.76 J/K is the entropy change per mole of gas.
What is the isothermal process' entropy change?Every time heat is transferred, entropy changes. The change in entropy is calculated by dividing the heat added by the temperature at when the transfer happened. Any process in which there is no heat transmission between the system and its surroundings is referred to as a "adiabatic process."
The entropy change for an isothermal process can be calculated using the following equation:
ΔS = nR ln(V2/V1)
In this case, the gas is compressed to one-half of its original volume, so V2/V1 = 1/2. Thus:
ΔS = nR ln(1/2)
We can simplify this expression using the fact that ln(1/2) = -ln(2), so:
ΔS = -nR ln(2)
Using the value of the gas constant R = 8.314 J/(mol·K), we get:
ΔS = -n(8.314 J/(mol·K)) ln(2)
So, for each mole of gas, the entropy change is:
ΔS/mol = -(8.314 J/(mol·K)) ln(2) ≈ -5.76 J/K
To know more about entropy change visit:-
https://brainly.com/question/4526346
#SPJ1
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
Calculate each quantity & show all steps.a. The average rate of the reaction between 10 and 20 secondsb. The instantaneous rate of the reaction at 30 seconds.c. The instantaneous rate of formation of O2 at 50 seconds.d. If the initial volum of the H2O2 is 1.5 L, what total amount of O2 (in moles) is formed in the first 50 seconds of reaction?
The average rate of the reaction between 10 and 20 seconds is 0.0095 M.s⁻¹, the instantaneous rate of the reaction at 30 seconds is 0.00629 M.s⁻¹, the instantaneous rate of formation of O2 at 50 seconds is 0.003357 M.s⁻¹.
a) at 10s, [H₂O₂] - 0.75M ; at 20s, [H₂O₂] - 0.56M. Thus,
Rate = -[tex]\frac{1}{2}[/tex]Δ[tex]\frac{H_{2}O_{2} }{t_{} }[/tex] = -[tex]\frac{1}{2}[/tex][tex]\frac{-0.19M}{10s}[/tex] = 0.0095 M.s⁻¹
b) Looking at the dotted line and picking as two points, the "intercepts" just for convenience-you could use any two points), I get the points (0 s, 0.78 M) and (62s, 0 M). Thus,
Rate = -[tex]\frac{1}{2}[/tex]Δ[tex]\frac{H_{2}O_{2} }{t_{} }[/tex] = -[tex]\frac{1}{2}[/tex][tex]\frac{-0.78M}{62s}[/tex] = 0.00629 M.s⁻¹
c) Looking at the dashed line, the y-intercept is (0 s, 0.55 M), and another point is (70. s. 0.08 M), Thus:
Rate = -[tex]\frac{1}{2}[/tex]Δ[tex]\frac{H_{2}O_{2} }{t_{} }[/tex] = -[tex]\frac{1}{2}[/tex][tex]\frac{-0.47M}{70s}[/tex] = 0.003357 M.s⁻¹
d) [H₂O₂]₆₀ - 0.22M ; [H₂O₂]₀ - 1.00M
thus Δ[H₂O₂] - 0.78M, [H₂O₂] was lost in the first 50sec
0.59molO₂
e)Looking at the dot dash line, we know that the y-intercept is 0s, 1.00M and the x-intercept is 36s, 0M. Thus,
Rate = -[tex]\frac{1}{2}[/tex]Δ[tex]\frac{H_{2}O_{2} }{t_{} }[/tex] = -[tex]\frac{1}{2}[/tex][tex]\frac{-1.00M}{36s}[/tex] = 0.0138 M.s⁻¹
To learn more about reaction rate, click here:
brainly.com/question/30546888
#SPJ4
The red subatomic particles can best be described as:a. counted into the mass of the atom, negatively chargedb. located in the electron cloud not counted into the mass of the atom, negatively chargedc. located in the electron cloud not counted into the mass of the atom, no charged. located in the electron cloud counted into the mass of the atom, no chargee. located in the nucleus
The red subatomic particles being referred to in this question are likely electrons, which are negatively charged particles that are located outside the nucleus in the electron cloud of an atom.
Electrons are not counted into the mass of the atom, which is primarily determined by the protons and neutrons in the nucleus. Electrons occupy discrete energy levels around the nucleus and play a critical role in chemical reactions and bonding. The number of electrons in an atom is equal to the number of protons in the nucleus, making atoms electrically neutral overall. Therefore, option (b), "located in the electron cloud not counted into the mass of the atom, negatively charged," is the most accurate description of electrons in an atom.
Find out more about red subatomic particles
brainly.com/question/11822918
#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
