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What is the pressure of 50.0 moles of oxygen gas confined in a 1000L cylinder at 25 Celsius

User Loonis
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1 Answer

7 votes

Step 1 - Finding an equation to solve the problem

For a gas, temperature, volume and pressura are importante variables. They are related with the number of moles of gas by the following equation:


pV=\text{nRT}

In this equation, R is the universal gas constant, which is 0.082 L.atm/mol.K

Step 2 - Substituting the values on the equation

From the exercise, we know that:


\begin{gathered} p=\text{?} \\ \\ V=1000L \\ \\ n=50\text{ moles} \\ \\ T=25\degree C\text{ (298 K)} \end{gathered}

Substituting these values on the equation, we obtain thus:


1000p=0.082*298*50

Working on the math, we have:


p=(1221)/(1000)=1.22\text{ atm}

The pressure will be thus 1.22 atm.

User Swathy Valluri
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