A sample of gas has a density of 0.53 g/L at 225 K and under a pressure of 108.8 kPa. Find the density of the gas at 345 K under a pressure of 68.3 kPa. Assuming the mass is equal to 1 gram.

Answers

Answer 1

Answer:

[tex]\rho _2=0.22g/L[/tex]

Explanation:

Hello!

In this case, since we are considering an gas, which can be considered as idea, we can write the ideal gas equation in order to write it in terms of density rather than moles and volume:

[tex]PV=nRT\\\\PV=\frac{m}{MM} RT\\\\P*MM=\frac{m}{V} RT\\\\P*MM=\rho RT[/tex]

Whereas MM is the molar mass of the gas. Now, since we can identify the initial and final states, we can cancel out R and MM since they remain the same:

[tex]\frac{P_1*MM}{P_2*MM} =\frac{\rho _1RT_1}{\rho _2RT_2} \\\\\frac{P_1}{P_2} =\frac{\rho _1T_1}{\rho _2T_2}[/tex]

It means we can compute the final density as shown below:

[tex]\rho _2=\frac{\rho _1T_1P_2}{P_1T_2}[/tex]

Now, we plug in to obtain:

[tex]\rho _2=\frac{0.53g/L*225K*68.3kPa}{345K*108.8kPa}\\\\\rho _2=0.22g/L[/tex]

Regards!


Related Questions

What would you use to determine whether an acid or alkali has been added to a solution?
A. Reactant
B. Indicator
C. Adjustor
D. Identifier

Answers

Answer:

B. Indicator

Explanation:

An indicator is used to determine whether an acid or alkali has been added to a solution.

An acid or alkali changes the hydrogen ion concentration in solution. This is indicated by the pH of the solution after which the acid or alkali has been added.

To see this change, indicators are used. An indicator employs color changes to show a change in chemical properties which pertains to the pH. There are several indicators used which are litmus paper, phenolphthalein, methyl orange

ways of preventing rusting​

Answers

Use an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...
Apply Oil. ...
Apply a Dry Coating. ...
Paint the Metal. ...
Store Properly. ...
Galvanize. ...
Blueing. ...
Powder Coating.

Answer:

Here is your answer......

A 52 gram sample of an unknown metal requires 714 Joules of energy to heat it from
30.5◦C to 82◦C. What is the specific heat of
this metal?
Answer in units of J/g ·
◦ C.

Answers

Answer:  Approximately [tex]0.267 \frac{\text{J}}{\text{g}^{\circ}\text{C}}[/tex]

===================================================

Work Shown:

We have the following variables

Q = 714 joules = heat requiredm = 52 grams = massc = specific heat = unknown[tex]\Delta t[/tex] = 82-30.5 = 51.5 = change in temperature

note: the symbol [tex]\Delta[/tex] is the uppercase Greek letter delta. It represents the difference or change in a value.

Apply those values into the formula below. Solve for c.

[tex]Q = m*c*\Delta t\\\\714 = 52*c*51.5\\\\714 = 52*51.5*c\\\\714 = 2678*c\\\\2678*c = 714\\\\c = \frac{714}{2678}\\\\c \approx 0.26661687826737\\\\c \approx 0.267\\\\[/tex]

The specific heat of the unknown metal is roughly [tex]0.267 \frac{\text{J}}{\text{g}^{\circ}\text{C}}[/tex]

Which of the following describes hetereogeneous mixture... 1)A mixture that is easily separated, the components are different sixes and unevenly mixed. 2) A mixture that is very difficult to separate, the contents are evenly mixed and the mixture looks like a substance

Answers

Answer:

1)A mixture that is easily separated, the components are different sixes and unevenly mixed.

Explanation:

Mixtures are impure substances with usually indefinite composition. Their constituents often retains their identities. They can easily be separated into constituents by physical methods.

Homogenous mixtures have their constituents existing in only one phase.

Heterogeneous mixtures have their constituents existing in at least two different phases.

Heterogenous mixtures are easily separated due to the phase differences of its constituents. They are easily separated by physical processes compared to homogeneous mixtures.

(b) What is the solubility of lead chromate in moles per dmcube ksp
for PbC10,=2.8x10*-13 mole/dmº​

Answers

The solubility of lead chromate : s= 5.29 x 10⁻⁷ mol/L

Further explanation

Given

Ksp  for PbCl,=2.8x10*-13 mole/dmº

PbCrO4

Required

The solubility

Solution

P b C r O ₄ ( s ) ⇌ P b²⁺( a q) +C r O ₄ ⁻²( a q )

s                     s               s

s= solubility

Ksp P b C r O ₄  = s²

K s p  = [ P b ²⁺] [C r O ₄ ⁻² ]= 2.8x10⁻¹³

s = √2.8x10⁻¹³

s= 5.29 x 10⁻⁷ mol/L

How many electrons will an Oxygen (O) atom gain or lose in forming an ion?

Answers

Answer:

two electrons.... oxygen needs two electrons to attain stability

A patient is prescribed 100mg/day of antibiotic for 2 weeks. The antibiotic is available in vials that contain 20mg/vial of the drug. How many vials are necessary for the entire treatment?

Answers

i have no idea, but i’m pretty sure you gotta divide

How much
much hydrogen gas evolved
when 1.5 current is passed through water for 1.5 hours?​

Answers

0.042 moles of Hydrogen evolved

Further explanation

Given

I = 1.5 A

t = 1.5 hr = 5400 s

Required

Number of Hydrogen evolved

Solution

Electrolysis of water ⇒ decomposition reaction of water into Oxygen and Hydrogen gas.

Cathode(reduction-negative pole) : 2H₂O(l)+2e⁻ ⇒ H₂(g)+2OH⁻(aq)

Anode(oxidation-positive pole) : 2H₂O(l)⇒O₂(g)+4H⁻(aq)+4e⁻

Total reaction : 2H₂O(l)⇒2H₂(g)+O₂(g)

So at the cathode H₂ gas is produced

Faraday : 1 mole of electrons (e⁻) contains a charge of 96,500 C

[tex]\tt mol~e^-=\dfrac{Q}{96500}[/tex]

Q = i.t

Q = 1.5 x 5400

Q = 8100 C

mol e⁻ = 8100 : 96500 = 0.084

From equation at cathode , mol ratio e⁻ : H₂ = 2 : 1, so mol H₂ = 0.042

What is the poH of a
2.6 x 10-6 M H+ solution?
pOH = [?]

Answers

Answer:

pOH = 8.41

Explanation:

From the question given above, we obtained the following information:

Concentration of Hydrogen ion [H⁺] = 2.6×10¯⁶ M

pOH =?

Next, we shall determine the pH of the solution. This can be obtained as follow:

Concentration of Hydrogen ion [H⁺] = 2.6×10¯⁶ M

pH =?

pH = – Log [H⁺]

pH = – Log (2.6×10¯⁶)

pH = 5.59

Finally, we shall determine the pOH of the solution. This can be obtained as follow:

pH = 5.59

pOH =?

pH + pOH = 14

5.59 + pOH = 14

Collect like terms

pOH = 14 – 5.59

pOH = 8.41

Therefore, the pOH of the solution is 8.41

Answer:

8.41

Explanation:

Which electron configuration is impossible?

a. ls22s22p2d2

b. 1s22s22p63s23p64s

c. 1s22s22p63s23p3

d. 1s22s22p63s2

e. 1s22s22p63s23s54s

1

Answers

Answer:

MP hippopotamus

Explanation: I'm in the fifth grade so yeah I really don't know this so I'm just going to say some random stuff and white cheddar mac and cheese warm TV perfect back MD 11443 to 2885 eleven 12:20 to 11 132 0.24 answer

2.92 x 10^-15/
(5.6 x 10^-3) (4.16 x 10^9)

Answers

Answer:

3645.46

Explanation:

calculated

Consider this reaction: 2HgO→2Hg+O2 .

Which of the following is the best explanation for why this reaction is a decomposition reaction?
Question 5 options:


Because it is balanced


Because oxygen is one of the reactants


Because there are two products


Because there is only one reactant

Answers

Answer:

becous thear are two products

Explanation:

The statement is "Because there is only on reactant."

What is reactant?

Reactant are raw materials that react with one another and form products.

What is decomposition reaction?

A decomposition reaction can be defined as a chemical reaction in which one reactant breaks into two or more product.

Hence the correct explanation about the reaction is "because there is only one reactant"

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What happens when an electric charge moves

Answers

Answer:

When an electric charge moves, heat is dissipated due to the drift velocity hence current is induced

Which one of these is NOT one of the characteristics of living things?
A.All living things reproduce.
B.All living things are composed of one or more cells.
C.All living things grow develop and have life spans.
D.All living things provides heat and light on Earth.

Answers

Answer:

D. All living things provides heat and light on Earth.

Explanation:

its the sun that does that

Answer:

option d.

Explanation:

all living things provides heat and light on Earth.

How do waves interact with matter ?

Answers

Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. Besides bouncing back like an echo, waves may bend or spread out when they strike a new medium. These three ways that waves may interact with matter are called reflection, refraction, and diffraction.

When waves travel from one medium to another, they interact. When waves hit a new medium, they may bend or spread out instead of bouncing back like an echo. These three interactions of waves with matter are known as reflection, refraction, and diffraction.

What are wave interactions examples?

Interactions include reflection, refraction, and diffraction. An example of wave reflection is an echo. Refraction occurs when waves bend at an angle as they enter a new medium. When waves spread out as they travel through an opening in an obstacle, this is referred to as diffraction.

When two or more waves collide, they interact with one another. Wave interference is the interaction of waves with other waves. When two waves traveling in opposite directions collide, wave interference occurs.

Thus, the interactions of waves with matter are known as reflection, refraction, and diffraction.

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9. Which atom is more likely to make a positive charge?
Oxygen or Hydrogen

Answers

Hydrogen is more likely than oxygen because it has a positive charge already

What gases make up Jupiter? Name moons of Jupiter Can Jupiter sustain life How many rings does Jupiter have The weather on Jupiter​

Answers

Answer: Jupiter is made up predominantly of hydrogen. Jupiter's Moon, Europa, might be able to support life. Jupiter has 3 skinny rings. Usually around -234 degrees Fahrenheit.

A barium atom (Ba) would form its most stable ion by the 1. gain of one electron. 2. loss of one electron. 3. loss of 56 electrons. 4. gain of two electrons. 5. loss of two electrons.

Answers

By definition, the correct answer is option 5. A barium atom (Ba) would form its most stable ion by the loss of two electrons.

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.

In other words, anions are negatively charged ions and are formed when metals gain electrons. Cations are positively charged ions and are formed when a metal loses electrons.

The electrostatic attraction between positives and negatives attracts the particles to each other and creates an ionic compound.

A barium (Ba) atom is a metal, so it loses 2 electrons to comply with the octet rule, which states that the atoms of the elements bond together in an attempt to complete their valence shell, leaving the atom stable with 8 electrons in its last shell and thus be stable.

Finally, the correct answer is option 5. A barium atom (Ba) would form its most stable ion by the loss of two electrons.

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What makes this inauguration different from the past?

Answers

Answer:

there's just a lot of drama around grumpy trumpy's StOlEN eLecTiOn which are all just fake claims. all his hardcore followers are brainwashed into believing anything he says, so people (especially people who are inside the capitol) fear that trump's followers might incite violence AGAIN even after they broke into the Capitol on the 6th.

That's why they have the National Guard and thousands of people to keep the building secure during Biden's Inauguration.

hope this helps!

HELP me plzzzzzzzzzzzzzzzzz

Answers

Answer:

Explanation:

bblblblbllbllbllb1234w

please help and if u dont know that ok but pleas don't give me the wrong answer​

Answers

Answer: The answer is 2 and 4

Answer: B

Explanation: Some types of waves are able to travel through space. Some can even travel through solids and liquids.

What causes the moon to be illuminated?
A. concave
B. reflection
C. medium
D. refraction

Answers

Answer:

Reflection

Explanation:

The light from Earth's surface, reflected back towards the Moon, can illuminate it all the same. This is why, when the Moon is in a crescent phase, you can still see features on the dark portion of the Moon: we call this reflected, illuminating light the phenomenon of Earthshine.

A chemist measures the amount of bromine liquid produced during an experiment. She finds that 496g of bromine liquid is produced. Calculate the number of moles of bromine liquid produced.

Answers

Answer:

6.208 mol

Explanation:

Mass of Bromine Liquid = 496g

Number of moles = ?

Relationship between number of moles and mass is given as;

Number of moles = Mass / Molar mass

Molar mass of Bromine = 79.9g

Number of moles = 496 / 79.9 = 6.208 mol

Which of the following is a radioactive element?Sodium, Fluorine,Oxygen
francium

Answers

Answer:

Fluorine

Explanation:

These particles stick in the atoms and make them radioactive.

How did Mendeleev arrange the known elements in his periodic table? O A. According to the number of protons O B. According to the number of electrons O C. According to atomic mass O D. According to atomic number​

Answers

Mendeleev arranged the known elements in his periodic table according to atomic number (option D).

What is the periodic table?

Periodic table is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).

The chemical elements are organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.

Dmitri Mendeleev is the Russian scientist that formulated the periodic table of chemical elements and arranged them in order of increasing atomic number.

Learn more about periodic table at: https://brainly.com/question/11155928

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Answer: C.

Explanation:

according to atomic mass

The subatomic particle that is different in isotopes

Answers

Answer:

Neutrons

Explanation:

Subatomic particles are components atoms, and they include protons, electrons and neutrons. In different isotopes of an atom, the number of neutrons that the atom contains is what changes.

I hope this helps!

(I will give a Brainliest)
How would you describe the change in the arrangement of particles as heat energy and
temperature increase?

Answers

The particles would be more scattered out as those three factors increase.
With an increase in temperature, the particles move faster as they gain kinetic energy, resulting in increased collision rates and an increased rate of diffusion. ... With an increase in temperature, the particles gain kinetic energy and vibrate faster and more strongly

PLS HELP ASAP THIS IS DUE TODAY

Answers

Answer:      what grade are u in ill help

Explanation:

Okay so basically go to the link and show me a picture of it and I’ll give you the answers

Balancing Equations 1. .
_NH4NO3 → _N20 + _H20

Answers

Answer:

_ NH4NO3 -> _ N2O + 2 H2O

Explanation:

By having 2 water molecules, we reach the 4 H atoms and 3 O atoms that are present on the left side. We don't add any other coefficients because we already have enough N atoms and we don't have to manipulate the left side at all.

which is a characteristics of all ions

Answers

Answer:

All ions must a overall charge

Explanation:

Answer:

i belive its B

Explanation:

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