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Andrei [34K]
3 years ago
7

What is the partial pressure of oxygen in a gas mixture that is 40% oxygen, 40% argon, and 20% helim?

Chemistry
1 answer:
Scrat [10]3 years ago
4 0
The answer is 400 mm Hg. 

Hope this helps! 
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Energy transformation of a kettle?
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Which of the following is the smallest volume? (2 points) 2500 mL
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So to put them all in the same units we have 
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How many moles are contained in 2.0 L of N2 at standard temperature and pressure.
GuDViN [60]

0.091 moles are contained in 2.0 L of N2 at standard temperature and pressure.

Explanation:

Data given:

volume of the nitrogen gas = 2 litres

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number of moles =?

R (gas constant) = 0.08201 L atm/mole K

Assuming nitrogen to be an ideal gas at STP, we will use Ideal Gas law

PV = nRT

rearranging the  equation to calculate number of moles:

PV = nRT

n = \frac{PV}{RT}

putting the values in the equation:

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0.091 moles of nitrogen gas is contained in a container at STP.

6 0
3 years ago
Find the vapor pressure of a water solution in which the
zheka24 [161]

Answer:

The vapor pressure in solution is 0,0051 atm

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Molar fraction does not have units

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3 years ago
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