a mixture of argon and krypton gases, at a total pressure of 768 mm hg, contains 3.31 grams of argon and 21.7 grams of krypton. what is the partial pressure of each gas in the mixture

Answer:

Public water supply and sanitation in the United Kingdom is characterised by universal access and generally good service quality[citation needed]. A salient feature of the sector in the United Kingdom compared to other developed countries is the diversity of institutional arrangements between the constituting parts of the UK (England and Wales; Scotland; and Northern Ireland), which are each described in separate articles, while this article is devoted to some common issues across the United Kingdom.

Answer:The amount of energy used or released as heat in a reaction.

Explanation:

The value of Q for the formation of 1 mole of NH3 from H2 and N2 is different from the value of Q for the formation of NH3 from H2 and 1 mole of N2.

This is because the reaction stoichiometry is different in the two cases. The balanced chemical equation for the formation of NH3 from H2 and N2 is:

N2 + 3H2 → 2NH3

This means that in order to form 1 mole of NH3, 1/2 mole of N2 (since the stoichiometric coefficient of N2 is 1) and 3/2 moles of H2 are needed. The value of Q for this reaction is calculated using the law of mass action and the concentrations of the reactants and products at a given point in time.

On the other hand, for the formation of NH3 from H2 and 1 mole of N2, the balanced chemical equation is:

1/2N2 + H2 → NH3

In this case, only 1/2 mole of N2 and 1 mole of H2 are needed to form 1 mole of NH3, and the value of Q for this reaction is also calculated using the law of mass action and the concentrations of the reactants and products.

The relationship between the two Q values can be determined by using the stoichiometry of the reaction. Since the two reactions are related by a stoichiometric factor, the value of Q for the reaction of 1 mole of NH3 formation from H2 and N2 is equal to the square of the value of Q for the reaction of NH3 formation from H2 and 1 mole of N2.

Thus, Q for N2 + 3H2 → 2NH3 = [Q for 1/2N2 + H2 → NH3]^2.

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Answer: What is the mass, in grams, of 135 mL of ethanol? d=0.789 g/mL - the ethanol density. V=135 mL - the volume of ethanol. m=0.789g/mL*135mL=106.515g ~ 106.5g- the mass of ethanol.

Explanation:

Hope this helps :)

Answer:

this question is so hard

Explanation:

it was in my exam and I'm still trying to figure out if I should do calculation

or just answer it with words

The mass of the other product, water, formed in the reaction is 72.06 g

From the question, we are to determine the mass of water formed

First, we will write the balanced chemical equation for the reaction,

The balanced chemical equation for the reaction is

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

This means

1 mole of propane reacts with 5 moles of O₂ to produce 3 moles of CO₂ and 4 moles of H₂O

Now, we will determine the number of moles of CO₂ formed.

From the formula,

\(Number\ of\ moles = \frac{Mass}{Molar\ mass}\)

Molar mass of CO₂ = 44.01 g/mol

Then,

Number of moles of CO₂ formed = \(\frac{132}{44.01}\)

Number of moles of CO₂ formed = 3 moles

Considering the balanced chemical equation,

Since 3 moles of CO₂ was formed, then 4 moles of H₂O will be formed.

Now, for the mass of H₂O formed

Using the formula,

Mass = Number of moles × Molar mass

Molar mass of H₂O = 18.015 g/mol

Therefore,

Mass of water formed = 4 × 18.015

Mass of water formed = 72.06 g

Hence, the mass of the other product, water, formed in the reaction is 72.06 g.

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Answer:

Dalton's law of partial pressure

Explanation:

In Dalton's law of partial pressure is states that the total pressure of a gas mixture is equal to the sum of the partial pressures of the component gasses.

This is the equation: \(P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}\).. so on and so forth.

basically what Dalton is saying partial pressures are just fractions of the total pressure, think of it as if you cut 12 slices of pizza and 12 people grabbed a slice of the pizza. Each person has 1/12 of that pizza, 1/12 x 12 = 1.  

let's say there is a container filled with nitrogen gas (N) , hydrogen gas (H), and ammonia gas (NH₃).

N= 40 atm

H=20 atm

NH₃= 10 atm

you would plug this information into this equation: \(P_{total} =P_{gas 1} +P_{gas2} + P_{gas3}\)

\(P_{N} + P_{H} + P_{NH{3}} = P_{total}\)

 \(P_{40} + P_{20} + P_{10} = 70\)  

N is 40/70 of the gaseous mixture.

H is 20/70 of the gaseous mixture.

NH₃ is 10/70 of the gaseous mixture.

if you add these fractions up:

\(\frac{40}{70} +\frac{20}{70} +\frac{10}{70} =\frac{1}{1} =1\)

I really hope this helps a little!

Fan and drill transforms electrical energy into mechanical energy.

The process of converting electrical energy into mechanical energy is known as electromechanical energy conversion. To achieve this, an electric motor with a rotor and stator is utilized. As the current flows through the stator, it generates a rotating magnetic field that interacts with the rotor's magnetic field, ultimately leading to the generation of mechanical energy.

The fan and drill are two devices that run on electric motors, which convert electrical energy into mechanical energy. This energy is then utilized to power the respective devices. For instance, in a fan, the motor rotates a set of blades to create a cool airflow, while in a drill, the motor spins a drill bit used for boring holes. The mechanical force generated by the electric motor is what propels these appliances to perform their intended tasks. Essentially, both fans and drills serve as excellent examples of machines that can transform electrical energy into mechanical energy for various applications.

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Based on the description of the graph, the law that is based on it is A. Boyle's law.

Boyle's law states that, at a constant temperature, the pressure and volume of a gas are inversely proportional to each other. In other words, as the volume of a gas decreases, the pressure increases, and vice versa, when the temperature remains constant.

The graph described shows a curve that starts high on the horizontal axis (indicating a large volume) and curves toward the origin, indicating a decrease in volume. As the volume decreases, according to Boyle's law, the pressure of the gas would increase. The leveling out of the curve as it approaches the horizontal axis suggests that there is an equilibrium point where the pressure and volume have stabilized.

Therefore, the graph aligns with the behavior predicted by Boyle's law, which establishes the inverse relationship between pressure and volume for a given amount of gas at a constant temperature. Therefore, Option A is correct.

The question was incomplete. find the full content below:

Which law is based on the graph that is shown below?

A graph is shown with pressure on the horizontal axis and volume on the vertical axis. A curve starts high on the horizontal axis, curves toward the origin, and then starts to level out as it approaches the horizontal axis.

A. Boyle’s law

B. Charles’s law

C. Dalton’s law

D. Gay-Lussac’s law

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The ions present in solution are:\((NH_{4})_{2} SO_{4} --------- > NH_{4}^{+} + SO_{4}^{2-}\)

When these compounds are dissolved in water, they will separate into (ions) cations and anions.

Compound                                            Cation                                Anion

(NH₄)₂SO₄ (Ammonium sulfate)         NH₄⁺ (Ammonium)      SO₄²⁻(Sulphate)

This compounds is made up of one cation and one anion but by convention while writing a chemical formula is that a cation is written first followed by an anion.

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Answer:

the cell membrane

Explanation:

it :

Answer: The answer is the Cell Membrane

Explanation:

Hope this helps <3

Answer:

Molar Mass of Calcium Carbonate = 100g

given mass = 50g

Number of mole of Calcium Carbonate =50/100 = 0.5 mole

Molarity = mole per litre of volume

Molarity = 0.5 /0.25 = 2mole/litre

Explanation:

hope it helps ......

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Answer:

\(mass \: of \: solute = 50 g \\ volume \: of \: the \: solution = 250ml \\ molar \: mass \: of \: solute \: = 100 \frac{g}{mol} \\ molarity = \frac{mole}{volume} \\ = \frac{ \frac{50}{100} }{250 \times {10}^{ - 3} } \\ = \frac{.5 \times {10}^{3} }{250} \\ = \frac{500}{250} \\ = 2mol \\ thank \: you\)

Size of an atom increases as we move down a group and from left to right across a period

Define an atom?

An atom is a unit of matter that specifically characterizes a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them. One or more protons and neutrons, which are comparatively heavy particles, can be found in the positively charged nucleus.

In a group, as the atomic number rises, the atomic size expands from top to bottom. Valence electrons are located farther from the nucleus because there are more filled energy levels, which increases atomic size.

Atomic size grows as a function of period number, number of shells, and so forth. Since there are more electrons in each shell as we move from left to right in a period, the force of attraction between the nucleus and electrons, which have positive charges, is stronger, bringing the shells closer to the nucleus and shrinking the size of the atom.

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Answer:

d an acid - base reaction.

Explanation:

Answer:

single replacement

Explanation:Look it up and got it from quizlet it should be right.

It is absorption of reflected, radiation from earth surface by atmospheric gases then radiation is then re-emitted, including back to earth surface is the best describes albedo is with respect to earths climate patterns.

What is albedo?

Albedo can be understood as the earth's reflectivity, or the amount of incoming sunlight that is reflected back into space. The main factors that affect global albedo are cloud cover and land-based ice cover, especially in places like Greenland and Antarctica that have substantial ice caps.

What is earth climate ?

The climate of a place refers to its long-term weather patterns. Hour by hour, day by day, month by month, or even year by year, the weather could change. An area's climate is thought to be determined by its weather patterns, which are normally tracked for at least 30 years.

Therefore, It is absorption of reflected, radiation from earth surface by atmospheric gases then radiation is then re-emitted, including back to earth surface is the best describes albedo is with respect to earths climate patterns.

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The pressure of hydrogen gas formed in mmHg is 745.7 mmHg. In order to find the pressure of hydrogen gas formed in mmHg, we need to make use of the Dalton's Law of Partial Pressures which states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas present.

We know that the total pressure of gas collected over water is 770.0 mmHg and that the temperature is 25.5 °C. Since the gas was collected over water, we know that it must have contained some amount of water vapor. This means that the total pressure is equal to the sum of the partial pressures of hydrogen gas and water vapor. Let's use this information to find the partial pressure of hydrogen gas.1.

We can use a table or a graph to find this value. A quick search shows that the vapor pressure of water at 25.5 °C is 24.3 mmHg.2.

Now we can use the Dalton's Law of Partial Pressures to find the partial pressure of hydrogen gas. P total = PH₂ + P water PH₂ = P total - P water

PH2 = 770.0 mmHg - 24.3 mmHg

PH2 = 745.7 mmHg.

Therefore, the pressure of hydrogen gas formed in mmHg is 745.7 mmHg.

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A given element is balanced when it appears on both sides of the equation in the same number of atoms. A balanced equation has all of its components in balance.

To comply with the law of conservation of mass, which stipulates that matter cannot be created or destroyed, chemical reactions must be in balance. An approximate estimation of the quantity of reactants needed for a reaction is provided by a balanced chemical equation.

There must always be equilibrium in chemical equations. Equal numbers and types of each atom appear on both sides of balanced chemical equations.

A chemical equation is imbalanced and unable to accurately explain what transpires during a reaction if the numbers of each type of atom on the two sides of the equation disagree.

Therefore, When the total number of atoms in the reactants and products sides of a chemical equation equals one, the equation is said to be balanced.

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Answer:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

Explanation:

The hypothesis as to why the sisters have different statures occurs because from genetics we know that it is linked to the alleles so one sister is shorter than the other one was they had different alleles.

On average, siblings share about 50% of their DNA with each other, but some siblings share even more and some less. So while we all have approximately 50% DNA from each parent, the segments we end up getting are completely random.

Hereditary character or gene that is manifested by the absence of the opposite gene, called dominant, in this case, Kiera is extremely short for her age.

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The right answer is b. Negative ion.

The number of protons in an atom determines its atomic number and its identity as an element. In this case, the oxygen atom has 8 protons, indicating that it is an oxygen atom with atomic number 8.

The number of electrons in a neutral atom is equal to the number of protons, meaning that a neutral oxygen atom would have 8 electrons. However, the given oxygen atom has only 7 electrons, indicating that it has gained one electron to become a negative ion or an anion.

Therefore, the correct answer is b. Negative ion.

In summary, the given oxygen atom with 8 protons, 8 neutrons, and 7 electrons is classified as a negative ion or an anion since it has gained one electron to become negatively charged.

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Answer:

B. choosing a material that will show warning before it fails.

Explanation:

Answer:

APEX

Explanation:

B

Considering the Boyle's law, the resulting volume if the pressure were increased to 3.9 atm and the temperature did not change is 4 L.

As the volume increases, the particles (atoms or molecules) of the gas take longer to reach the walls of the container and therefore collide less times per unit of time against them. This means that the pressure will be lower because it represents the frequency of shocks of the gas against the walls. In this way, pressure and volume are related, determining Boyle's law that says:

"The volume occupied by a given mass of gas at constant temperature is inversely proportional to the pressure"

Boyle's law is expressed mathematically as:

P×V=k

Considering an initial state 1 and a final state 2, the following holds:

P₁×V₁=P₂×V₂

In this case, you know:

Replacing in the Boyle's law:

1.3 atm× 12 L=3.9 atm× V₂

Solving:

(1.3 atm× 12 L)÷3.9 atm= V₂

4 L= V₂

The new volume will be 4 L.

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Answer:In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. ... The traditional definition focuses on the bulk properties of metals.

Explanation:

Answer:

metal is a type of element to be percise M.O in the element periodic table

Explanation:

ur welcome

Answer:

Given

mass of H2O (m) =35.6g

molarmass (mr) = H2O ), 1x2+16=18g/mol

moles of H2O (n) =?

sln

n=m/mr

n=35.6g/18g/mol

n=1.978moles

the moles of H2O are 1.978moles

Consider the oxidation and reduction reaction below. The substance which is being oxidized and which is being reduced are HBr and Cl₂ respectively.

This is defined as a process in which an electron is removed from a molecule during a chemical reaction.

In the equation given: Cl₂(g) + 2HBr(g) 2HCl(g) + Br₂(g).The Cl₂ is reduced from oxidation state 0 to -1 while HBr oxidized from -1 to 0 thios therefore means that Chlorine is oxidizing agent while HBr is reducing agent and is therefore the correct choice.

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They tell us that the pressure of the gas is constant and the temperature and volume vary. If we assume that the gas behaves like an ideal gas, we can apply Charles's law, which tells us:

where,

V1 is the initial volume, 3.62L

T1 is the initial temperature, 21.6°C=294.75K

V2 is the final volume, 3.45L

T2 is the final temperature, in Kelvin

Now, we clear T2 and replace the known data:

The temperature at which the volume of the gas is 3.45 L will be 281K

Answer. b) 281K

Answer: Your welcome!

Explanation:

Answer 1: Ice, water, sugar, lemon juice

Answer 2: Liquid in a gas

Answer 3: Saturated

Answer 4: Dissolution

Answer 5: Moles of solute/liters of solution

Answer 6: Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate.

Answer 7: Molarity

Answer 8: Saturated

Answer 9: Freezing-point depression

Answer 10: Silver chloride (AgCl)