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Kamila [148]
3 years ago
9

If 20 ml of gas is subjected to a tempature change from 10 Celsius to 100 Celsius and a pressure change from 1 atm to 10 atm, th

e expression best representing the new volume is?
Chemistry
1 answer:
serg [7]3 years ago
4 0

Answer:

V₂ = 2.64 mL

Explanation:

Given data:

Initial volume = 20 mL

Initial pressure = 1 atm

Initial temperature = 10°C (10 +273 = 283 K)

Final temperature = 100°C (100+273 = 373 K)

Final volume = ?

Final pressure = 10 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 1 atm. 20 mL . 373 K / 283 K. 10 atm

V₂ = 7460 mL.K.atm / 2830 K.atm

V₂ = 2.64 mL

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7 0
4 years ago
Fe2O3 + Al ---> Fe + Al2O3
PIT_PIT [208]

Answer:

Fe2O3 + 2Al \rightarrow 2Fe + Al2O3

Explanation:

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In this case, when balancing chemical reactions, we must make sure that the atoms of each element are the same at both reactants and products; thus, for the given reaction, we need two iron and aluminum atoms at each side based on their subscripts in the given oxides as shown below:

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5 0
3 years ago
The volume of a sample of a gas is 1.0 liter at STP. If the pressure remains constant and the temperature is raised to 546 K, th
kvasek [131]

Answer:

2 L is the new volume

Explanation:

We can apply the Ideal Gases Law to solve the problem.

At STP, we kwow that 1 mol of gas occupy a volume of 22.4 L

Then, how many moles do we have in 1 L?

Let's do it by a rule of three:

(1L . 1 mol) / 22.4L = 0.0446 moles

These moles are at 1 atm and 273 K of temperature, so let's change our conditions.

P . V = n . R .T

1 atm . V = 0.0446 mol . 0.082 L.atm/mol K . 546 K

V = 2 L

If we pay attention, we can notice that, if we double temperature, we double the volume.

6 0
3 years ago
There are different atoms and each type of atom is called
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8 0
3 years ago
When air bags inflate, nitrogen gas is formed from sodium azide, along with solid sodium. what reaction category is this?
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