the percent error for the density of the liquid in each graduated cylinder is -1.38% in A and 1.39% in B
To calculate the percent error for the density of the liquid in each graduated cylinder, we need to use the following formula:Error percent is calculated as [(experimental value - acceptable value) / accepted value]. x 100. First, we'll calculate the density of the liquid in graduated cylinder A: Density of liquid A = mass of liquid A / volume of liquid A = (23.54 - 17.83) g / 5 mL = 3.56 g/mLNow we'll calculate the percent error for density of liquid A: % Error = [(3.56 g/mL - 3.61 g/mL) / 3.61 g/mL] x 100 = -1.38%. Next, we'll calculate the density of liquid B: Density of liquid B = mass of liquid B / volume of liquid B = (23.9 - 18.07) g / 5 mL = 3.61 g/mL. Now we'll calculate the percent error for density of liquid B:% Error = [(3.61 g/mL - 3.56 g/mL) / 3.56 g/mL] x 100 = 1.39%. It's worth noting that the percent error for the density of liquid A and B are opposite in sign and similar in magnitude, this implies that the measurement errors in mass and volume are likely to be canceled out when measuring the density, resulting in relatively low error.
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hydrogen (h) atoms have an atomic number of 1. in a nuclear fusion reaction, one atom of hydrogen with a mass number of 2, and one atom of hydrogen with a mass number of 3 are smashed together. they form a new atom and lose one neutron into the environment. what atom is produced and what atomic number and what mass number does it have as a result of this reaction? you should use the periodic table to answer this question.
When deuterium and tritium fuse, the atom produced is helium nucleus, which atomic number 2 and mass number 4.
How much energy does the fusion of deuterium and tritium produce?One deuterium nucleus and one tritium nucleus fuse to produce one helium nucleus, one free neutron, and 17.6 MeV of energy in a process known as deuterium-tritium fusion (also abbreviated as D+T). For fusion devices, it is the type of fusion that is most effective.
What is the reaction known as when the deuterium and tritium nuclei combine?Illustration of the fusion reaction between deuterium (D) and tritium (T), which results in the production of helium nuclei (or alpha particles) and high-energy neutrons. The Sun and other stars are propelled by nuclear fusion processes. Two light nuclei combine to form one heavy nucleus during a fusion process.
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2.00 L of 1.0 M NaCl solution is prepared in a flask. 400.0 mL of the solution is poured out of the flask into a beaker. What is the concentration of the salt solution in the beaker? Give your answer to two significant figures.
Answer:
Explanation:
The concentration of the salt solution in the beaker is 0.50 M.
Tectonic plates are huge pieces of HHEOITERPSL __________________ that slowly move on the HHTNSESEPROAE _
Answer:
Lithosphere, Asthenosphere
Explanation:
I am pretty sure that's right
Answer:plate motion, or tectonic shift
Explanation:
an aqueous sodium nitrate (nano3) solution must be created for an experiment. if 50.00 ml of a 0.150 m solution is needed, what amount of sodium nitrate (in grams) must be weighed out?
If you need to make a na2so4 nitrate solution for an experiment, weigh out 0.6375 g of sodium nitrate.
Experiment? What do you mean?a method used in a controlled setting to find a previously undiscovered effect or law, validate a theory, or provide an example of an existing law. experimenting, the act of testing
What was the outcome of the experiment?An experiment is a procedure used to verify or refute a theory, as well as gauge the success or viability of something that hasn't been done before. Experiments illuminate cause-and-effect linkages by demonstrating how happens when a specific ingredient is changed.
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Select the element(s) that will have one unpaired electron in the p orbital.
A. Ar
B. Mg
C. Al
D. O
E. Cl
The element that will have one unpaired electron in the p orbital will be aluminum (Al).
The electronic configuration of the given element as follows:
The atomic number of argon (Ar) will be 18: 1s22s22p63s23p6
The atomic number of magnesium (Mg) will be 12: 1s22s22p63s2
The atomic number of aluminum (Al) will be 11: 1s22s22p63s23p1
The atomic number of oxygen (O) will be 8: 1s22s22p4
The atomic number of chlorine (Cl) will be 17: 1s22s22p63s23p5
Therefore, aluminum is the only element hat will have one unpaired electron in the p orbital.
Thus be concluded that element Al will have one unpaired electron.
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microscale reactions involve reaction mixtures with volumes ?
Microscale reactions involve reaction mixtures with volumes of 5 ml or less than 5 ml.
What exactly is a microscale reaction?Microscale chemistry (also known as tiny-scale chemistry, in German: Chemie am Mikromaßstab) is an analytical approach as well as a teaching method that works with small quantities of chemical compounds. Benefits of Teaching with Microscale Chemistry explains how microscale chemistry allows you to perform more experiments in less time while also being safer, more exact, less expensive, and creating less waste.
A chemical reaction includes the transformation of reactant atoms, ions, and/or molecules into product atoms, ions, and/or molecules at the microscopic level. This necessitates the breaking of certain connections, the formation of others, and the relocation of some nuclei.
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a chemist ways of three separate test samples of 0.70 g 0.240 and 2.3 g what is the total weight of the three
The total weight of the three test samples is weighed by the chemist is 3.240g.
the total weight is 0.70 g + 0.240 g + 2.3 g = 3.240 g. It is the sum of the weight of the three test samples.In chemistry, test samples are small amounts of a substance that are taken from a larger batch and used for testing or analysis. They are typically measured in grams (g) or milligrams (mg). The size of the test sample will depend on the type of analysis being performed and the amount of material available for testing. For example, in qualitative analysis, a small amount of the substance is often enough to identify the presence of a particular element or compound, whereas in quantitative analysis, larger test samples may be needed to obtain accurate measurements of the concentration of a substance.In general, it is important to accurately measure the weight of test samples in order to obtain precise and accurate results from chemical analysis. This is typically done using a balance or scale that is capable of measuring very small weights.
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How many milliliters of a 1% (m/v) nacl solution should you use to deliver 18.5 g of nacl?
give your answer to 1 decimal place, with just the numerical value (do not include the units).
18.5 * 10² milliliters of NaCl solution have to use to deliver 18.5g of NaCl.
Given data:
1% (m/v) NaCl
For 18.5g
1g --------------------------100ml
18.5g ---------------- Xml
X = 1850ml
The mass/ volume percent of a result is defined as the rate of the mass of solute that's present in a result, relative to the volume of the result, as a whole. Because this type of attention is expressed as a chance, the indicated proportion must be multiplied by 100.
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For which of the following elements could the central atom exhibit sp 3 d 2 hybridization?CSNB
Since there is not much of an energy difference between the 3p and 3d subshells in S, an electron may move easily between them, making sp³d² hybridization conceivable.
What exactly does hybridization mean?The process of two key mono DNA and/or RNA molecules joining together to generate a double-stranded molecule is known as hybridization in the context of genomics. The proper base pairing between the four single-stranded molecule is necessary for the bonding.
D begins from the third orbital as the energy disparity between subshells.
As a result, an electron cannot move from the second to the third orbital plane. They are therefore unable to undergo sp³d² hybridization.
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BCD Chemical Distributors has prepared a barrel of hazardous chemicals to be shipped to your employer. Select from the options to determine which items must be in place before it can be shipped. Select all that apply.answer choicesSDSPrice TagWarning LabelShipping Item Sheet
Specified elements including pictograms, signal words and hazard and precautionary statements.
What is necessary for each hazardous chemical on a construction site?Employers are required to keep copies of SDSs for any hazardous substances in their workplaces. If you do not immediately receive an SDS from your provider, you must request one. You must also make sure that SDSs are easily available to employees when they are in their work areas during their shifts.
OSHA has modified the criteria for hazardous chemical labeling under its Hazard Communication Standard (HCS). Pictograms, a signal word, hazard and precautionary remarks, the product identity, and supplier identification are all needed on all labels.
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consider the two binary compounds al2o3 and n2o3. which is a binary ionic compound and which is a binary covalent compound? explain. al2o3 is properly named aluminum oxide, but n2o3 is named dinitrogen trioxide. explain fully why one name uses greek prefixes and the other does not.
N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What you mean when you compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
b) The named dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
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N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What is compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
The named Dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
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if 4.2 g of methane reacts with excess oxygen gas to form carbon dioxide and water in the following chemical equation, how much water is produced in the reaction?
The mass of water is produced in the reaction of methane with oxygen gas is 9.35 g.
What is chemical reaction of methane reacts with oxygen?In a chemical reaction, reactants undergo a reaction and change into products throughout a chemical process.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
mass of methane is 4.2 g
molar mass is 16.04 g/mol.
The number of moles of methane present is 4.2 g / 16.04 g/mol = 0.26 moles.
From the chemical equation, we can see that for every 1 mole of methane that reacts, 2 moles of water are produced.
if 0.26 moles of methane react, then 2 * 0.26 moles = 0.52 moles of water are produced.
molar mass of water = 18.02 g/mol
moles of water produced, 0.52 moles.
mass of water produced = 18.02 g/mol * 0.52 moles = 9.35 g.
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A solution contains 45 g of KNO3 per 100.0 g of water at 25 ∘C. Is the solution unsaturated, saturated, or supersaturated?
At 25 °C, a solution has a KNO3 concentration of 45 g per 91.7 g of water. Unsaturated, saturated, or fully saturated is the state of the solution
How can you tell whether a solution is full or not?What distinguishes a saturated solution from an unsaturated one? The previous solution was saturated if extra solution is applied and does not dissolve. The experimental method was unsaturated if the extra solute dissolves.
How much KNO3 can dissolve in 100 water grams at 40 degrees Celsius?100 grams od water and 35 kilograms of KNO3 are dissolved in a solution at 40 degrees Celsius. Answer and justification This indicates that at 80 ° C., the saturated KCl solution will have a KCl content of 50 grams per 100 grams.
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the rate constant for a reaction increases from 10.0 to 100 when the temperature is increased from 300k to 400k what is the activcation energy
A reaction's rate constant rises from 10.0 to 100. when the temperature rises from 300°C to 400°C 45.6 kJ/mol is the activation energy.
The activation energy for the reaction can be calculated using the Arrhenius equation, which relates the rate constant to the activation energy and the temperature. The Arrhenius equation is: k = A * e^(-Ea/RT). Where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature. By rearranging the equation to solve for Ea, we get: Ea = -RT * ln(k/A)We know that k1 = 10.0 s^-1 at T1 = 300 K, and k2 = 100. s^-1 at T2 = 400 K. We can use these values to calculate the activation energy: Ea = -(8.314 J/mol*K) * (400 K - 300 K) * ln(100/10)=Ea ≈ 45.6 kJ/mol.
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there are three primary gases in the atmosphere n2 makes up 78%, o2 is 21%, and ar is ~1%. (we're ignoring the thousands of trace gases.) a sample of atmosphere is placed in a flask at stp. what is the partial pressure of o2 in the flask?
The flask's partial oxygen pressure is 0.78 atm. 1.72 x 102 mol, -0.21 x atm, and -6.38 x 102 mol
What is the atmosphere of Earth?Vision Learning, a website for learning, claims The composition of the Earth's atmosphere is roughly 78% nitrogen, 21% oxygen, 0.93% argon, 0.04% carbon dioxide, and trace amounts of neon, helium, methane, krypton, ozone, hydrogen, and water vapor.
How do you define atmosphere in a sentence?As it made contact with Earth's atmosphere, the spacecraft broke apart. 2 They were unhealthyly cramped in their living conditions. 3 The ambiance there strikes me as being somewhat impersonal. 4 The environment in towns and cities is contaminated by these pollutants.
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which position on the potential energy diagram corresponds to the species shown for the reaction of para fluro trifluoromethyl benzene with sodium methoxide
The position on the potential energy diagram that corresponds to this reaction would be the transition state.
What is reaction?A reaction is a response or an action that is taken in response to a stimulus. Physical, chemical, or psychological reactions are all possible. Physical reactions include movements, such as reflexes, and involve the body’s muscles, nerves, and other tissues. Chemical reactions involve the transformation of matter from one form to another and can be used to create new substances or break down existing ones. Psychological reactions involve emotions, thoughts, and behavior, and are often the result of a person’s response to an event or situation. All reactions involve changes in the environment of the individual or group and can involve both positive and negative responses.
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in an experiment, the concentration of a is monitored every 20 seconds as the reaction proceeds. explain how you can use the data from the experiment to determine the rate constant, k, of the reaction mentioned above.
The rate constant, k, of a reaction can be calculated from the data collected from an experiment by fitting the data to the integrated rate law equation for a given order reaction.
What is reaction?Reaction is a response to a stimulus or event. It can be conscious or unconscious, and can range from physical changes, such as a reflex or a dilation of the pupils, to psychological changes, such as an emotional reaction or a change in behaviour.
The integrated rate law equation for a first-order reaction is ln(A) = -kt + ln(A0), where A is the concentration of the reactant at any given time, A0 is the initial concentration of the reactant, and k is the rate constant. By plotting ln(A) versus time and fitting the data to the equation, the rate constant k can be calculated from the slope of the best-fit line.
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Write a sentence that describes this chemical reaction:
Na(s) + H2O(l) ⇒ NaOH(aq) + H2(g)
The sentence that describes this chemical reaction: is that:
The chemical reaction describes the process where solid sodium (Na) reacts with liquid water (H₂O) to produce aqueous sodium hydroxide (NaOH) and hydrogen gas (H₂).What is the chemical reaction about?This chemical reaction is an example of a neutralization reaction, where an acid and a base react to form a salt and water. In this case, the acid is hydrogen gas (H₂) and the base is sodium hydroxide (NaOH). The reaction can be written as:
Na(s) + H₂O(l) --> NaOH(aq) + H₂(g)
where Na(s) represents solid sodium, H₂O(l) represents liquid water, NaOH(aq) represents aqueous (dissolved in water) sodium hydroxide and H₂(g) represents hydrogen gas.
Sodium (Na) is a metal and a strong base. It reacts with water to produce hydrogen gas and a solution of sodium hydroxide, which is a strong base. When sodium metal is added to water, it reacts by losing an electron and becoming a positively charged ion (Na+). At the same time, water molecules, H₂O, split into hydrogen ions (H+) and hydroxide ions (OH-).
Therefore, It is an exothermic reaction, meaning it releases heat. It can also be dangerous as hydrogen gas is flammable and can cause explosion if it comes in contact with an ignition source.
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Classify each process by its individual effect on the entropy of the universe, S.
Drag the appropriate items to their respective bins: Increases S of the Universe, Does not Affect S of the Universe, Decreases S of the Universe.
a process run infinitesimally slowly at equilibrium and reversed to its original state
a constant composition mixture of solid and liquid water at STP (273.15 K and 1 atm)
motion of a frictionless pendulum
a bag of red marbles and a bag of green marbles dumped together on a table top
ice melting to water above the melting point
sublimation of naphthalene
(mothballs)
Entropy is a measure of disorder, so it follows that as molecular randomness rises, entropy will as well.
What is Entropy?Entropy is a measurable physical characteristic and a scientific concept that is frequently connected to a state of disorder, randomness, or uncertainty. Entropy is the measurement of the amount of thermal energy per unit of temperature in a system that cannot be used for productive work. Entropy is a measure of a system's molecular disorder or randomness because work is produced by ordered molecular motion. Ice melting is the ideal illustration of entropy. The individual molecules are arranged and fixed as ice.
Here,
The processes that have no impact on the universe's entropy are as follows:
1. A process that was run infinitesimally gradually until it reached equilibrium and then reversed.
2. A mixture of solid and liquid water with a constant composition, at standard pressure and temperature.
3. a frictionless pendulum swinging back and forth.
The processes that increase the universe's entropy are as follows:
1. A tabletop covered with a bag of green marbles and a bag of red marbles.
2. Above the melting point, ice melts into water.
3. Slowly converting into oxygen and water is hydrogen peroxide.
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Does not Affect S of the Universe .Part A), B) and C) are included .
What is Entropy?Entropy is a measurable physical characteristic and a scientific concept that is frequently connected to a state of disorder, randomness, or uncertainty. The quantity of temperature energy produced per unit of warmth in an unit that cannot be put to use in a useful way is measured as entropy. Entropy is a measure of a system's molecular disorder or randomness because work is produced by ordered molecular motion. Ice melting is the ideal illustration of entropy. The individual molecules are arranged and fixed as ice.
Does not Affect S of the Universe
a process with a fixed composition of liquid and solid water at STP that is performed insignificantly slowly at harmony and then reverted to its initial condition (273.15 K and 1 atm)
motion of a frictionless pendulum
Increases S of the Universe
a bag of red marbles and a bag of green marbles dumped together on a table top
above the melting point, ice melts to water.
sublimation of naphthalene
Entropy rises when molecular randomness does as well.
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The complete Question :
Classify each process by its individual effect on the entropy of the universe, S.
Drag the appropriate items to their respective bins: Increases S of the Universe, Does not Affect S of the Universe, Decreases S of the Universe.
A) a process run infinitesimally slowly at equilibrium and reversed to its original state
B) a constant composition mixture of solid and liquid water at STP (273.15 K and 1 atm)
C) motion of a frictionless pendulum
D) a bag of red marbles and a bag of green marbles dumped together on a table top
E) ice melting to water above the melting point
F) sublimation of naphthalene
(mothballs)
Write the total and net ionic equations for the reaction in which the antacid Al(OH)3 neutralizes the stomach acid HCl. Identify the type of reaction.
a. Identify the spectator ions in this reaction. b. What would be the advantages of using Al(OH)3 as an antacid rather than NaHCO3, which undergoes the following reaction with stomach acid?
NaHCO3(aq) + HCl(aq) →→→→ NaCl(aq) +
H₂O(l) + CO₂(g)
help please !
Answer:
Al(OH)3 + 3HCl ---------> AlCl3 + 3H2O
write a balanced equation for this reaction: oxygen reacts with hydrogen to yield water
Answer:
Perfecto
Explanation:
2H2 + O2 -> 2H2O
given that the values of the formation constants are large, what can you deduce about the equilibrium concentration of cu(nh3)4 21 versus the equilibrium concentration of cu21?
If the formation constants of a complex are large, it means that the complex is more stable than the individual species and therefore, the equilibrium concentration of the complex will be greater than the equilibrium concentration of the individual species.
In the case of Cu(NH3)4^2+ versus Cu^2+ The large value of the formation constant for Cu(NH3)4^2+ suggests that it is more stable than Cu^2+ and the equilibrium concentration of Cu(NH3)4^2+ will be greater than the equilibrium concentration of Cu^2+.It should be noted that large formation constants also indicate that the complex is more difficult to dissociate, and more energy is required to do so.
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Bacterial fermentation of sugars usually results in results in ___________ end products. end products whereas breakdown of proteins and amino acids the formation of __________ Multiple Choice O acidic........alkaline O acidic.....alcoholic O alkaline.......sulfide O alcohol........acidicO alkaline........acidic
Acidic end products are typically produced when bacteria digest carbohydrates. alkaline is produced as a result of the degradation of proteins and amino acids.
Which 20 necessary amino acids are there?
Histidine, valine, leucine, lysine, homocysteine, phenylalanine, threonine, tryptophan, & valine are the necessary amino acids. Alanine, asparagine, asparagine, glutamic acid, & serine are the non-essential amino acids.
What does a skin amino acid do?
All protein, including the most prevalent protein filaments in the skin, keratins, collagen, and elastin, are made up of amino acids. Skin that is chronically sun-damaged, aged, and neglected exhibits sagging and wrinkles, which are mostly attributed to the degeneration of collagen fibres.
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Suppose one electron in H2 is excited from the MO to the o*1s MO. Would you expect the H atoms to remain bonded to each other, or would the molecule fall apart? a. Fall apart, as the bond order changes from one to zero. b. Remain bonded, as the bond order changes from 1 to 1%. c. Remain bonded, as the bond order remains the same. d. Fall apart, as the bond order changes from 1 to 1%. e. It is not possible to excite an electron from the 01s MO to the o'is MO in Hz.
Remain bonded, as the bond order remains the same. When electrons are excited from the 01s MO to the o'is MO in H2, the bond order remains the same. This means that the molecule does not break apart, and the H atoms remain bonded to each other.
What is electrons?Electrons are particles of matter with a negative electrical charge. They are the smallest and most basic unit of matter and are found in atoms. Electrons are much smaller than protons and neutrons, and they orbit the nucleus of an atom in an electron cloud. Electrons are responsible for chemical bonding between atoms and also for electrical conduction.
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which findings on capnography indicate the normal movement of carbon dioxide through the respiratory system?
According to capnography research, EtCO2 is part of the normal flow of carbon dioxide through the respiratory system.
What capnography results show what is normal?End-tidal carbon dioxide, a parameter used in capnography, quantifies ventilation (EtCO₂). The pressure unit mm Hg (millimeters of mercury) is used to measure EtCO₂ values. No matter the patient's age, gender, race, or size, the normal values fall between 35 and 45 mm Hg, or around 5% CO₂.
When a patient has a high EtCO₂ reading at the beginning of treatment, a drop in that reading signifies improvement. If there is no change or an increase in EtCO₂, it means that respiratory effort is still insufficient to sufficiently remove CO₂ and that additional interventions are required.
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A solution contains 32 g of KNO3 per 100.0 g of water at 25 C Is the solution unsaturated, saturated, or supersaturated?
At 25 C, a solution has a KNO3 concentration of 32 g per 100.0 g of water. The solution is therefore not saturated.
At 25 C, is KNO3 soluble in water?Explanation: You are well aware that the solubility of potassium nitrate, KNO3, in water varies between 38.0 g at 25 degrees Celsius and 155 g per 100 g at 75 degrees Celsius.
A saturated solution is what?A solution is said to be saturated when it has dissolved all of the solute it can. At a certain temperature, no additional solute can dissolve in a saturated solution. By continuing to dissolve the solute until no more can be done, we can create a saturated solution.
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butane, a natural gas used in lighters, has a molar mass of 58.12 g/mol. How many particles are present inside a lighter if there is 1.00 gram of butane in it?
Number of particles of Butane present inside a lighter is 0.1 x 10^23 particles
It is given that
molar mass of Butane = 58.12 g/mol
given mass of Butane = 1.00 gram
Moles of Butane = given mass/molar mass
1/58.12 g/mol = 0.017 moles
1 moles of Butane = 6.022 x 10^23 particles
0.017 moles = 6.022 x 10^23 x 0.017
= 0.1 x 10^23 particles
Particle number, N, is defined as the number of particles per unit weight of a powder and can be obtained in the following manner.
Hence, Number of particles of Butane present inside a lighter is 0.1 x 10^23 particles
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Rank these systems in order of decreasing entropy.
Rank from highest to lowest entropy. To rank items as equivalent, overlap them.
1 mol of
oxygen gas at
273 K and 40 L
1/2 mol of
xenon gas at
100 K and 20 L
1 mol of
xenon gas at
273 K and 20 L
1/2 mol of
liquid xenon
at 100 K
1 mol of
xenon gas at
273 K and 40 L
1 mol of
carbon tetrachloride gas at
273 K and 40 L
1/2 mol of
xenon gas at
273 K and 20 L
The systems, in order of decreasing entropy from highest to lowest entropy, will be
1 mol of oxygen gas at 273 K and 40 L
1 mol of xenon gas at 273 K and 40 L
1 mol of xenon gas at 273 K and 20 L
1/2 mol of xenon gas at 273 K and 20 L
1/2 mol of liquid xenon at 100 K
1/2 mol of xenon gas at 100 K and 20 L
1 mol of carbon tetrachloride gas at 273 K and 40 L
Entropy is a measure of the disorder or randomness of a system. Generally, a system with a higher temperature, a higher number of moles, or a larger volume will have a higher entropy.
In this case, the system with the highest entropy is the 1 mol of oxygen gas at 273 K and 40 L. The reason is that the temperature is high, the number of moles is high, and the volume is large.
The systems with the lowest entropy are the 1/2 mol of liquid xenon at 100 K and the 1/2 mol of xenon gas at 100 K and 20 L. The reason is that the temperature is low, and the number of moles is low.
The other systems fall in between these extremes, in order of increasing entropy: 1 mol of xenon gas at 273 K and 40 L,1 mol of xenon gas at 273 K and 20 L, 1/2 mol of xenon gas at 273 K and 20 L, and 1 mol of carbon tetrachloride gas at 273 K and 40 L.
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how many moles of h2o are produced when 1 mole of mg(oh)2 reacts with 1 mole of h2so4?
In the reaction between one molecule of magnesium hydroxide and one mole of sulfuric acid, 1 molecule of magnesium sulfate with 2 moles of water are produced.
What purpose does magnesium hydroxide serve?Magnesium chloride is a relatively brief remedy for occasional constipation in both kids and adults. Magnesium hydroxide is a component of a class of medications known as saline natural remedies. It works by causing the feces to hold onto water.
Does magnesium hydroxide work well to neutralize acids?Heartburn, acid reflux, and gastrointestinal issues are all treated using antacids that combine hypochlorous acid and hydroxides. They can be used to treat patients from peptic ulcer disease, gastritis, peptic ulcer disease, hiatal hernias, or excessive digestive fluids (gastric hyperacidity).
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For the reaction represented by the equation Mg + 2HCl → H2 + MgCl2, calculate the percentage yield of magnesium chloride if 100. g of magnesium react with excess hydrochloric acid to yield 330. g of magnesium chloride. (Show your work on a separate sheet of paper and keep it to turn in when you return to school)a. 74.3%
b. 81.6%
c. 84.2%
d. 71.8%
The percentage yield of magnesium chloride is 84.16%.
To calculate the percentage yield of magnesium chloride, you would divide the amount of magnesium chloride produced by the theoretical amount that could have been produced and multiply by 100.
First, we will calculate the theoretical yield of magnesium chloride. The balanced equation for the reaction is:
Mg + 2HCl → H2 + MgCl2
So for every 1 mole of Mg, we get 1 mole of MgCl2
To convert mass to moles we use the molar mass of each substance:
Mg = 24.3 g/mol
MgCl2 = 95.2 g/mol
So 100g of Mg is equal to (100 / 24.3) = 4.1 moles of Mg
and the theoretical yield of MgCl2 is 4.1 moles * 95.2g/mol = 391.32 g.
Now we can calculate the percentage yield by dividing the actual yield (330 g) by the theoretical yield (391.32 g) and multiplying by 100:
(330 / 391.32) * 100 = 84.16%.
So the percentage yield of magnesium chloride is 84.16%.
This means that 84.16% of the theoretical yield of magnesium chloride was actually produced in the reaction.
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