# Question #6d6af

##### 1 Answer

For Problem 1:

#### Explanation:

**Problem 1**

I assume you are asking for the volume back on Earth at STP (1 bar and 0 °C).

We can use the Combined Gas Laws equation.

#color(blue)(|bar(ul(color(white)(a/a) (P_1V_1)/T_1= (P_2V_2)/T_2color(white)(a/a)|)))" "#

We can rearrange the Combined Gas Laws equation to get

**Problem 2**

There are twice as many dinitrogen molecules as dioxygen molecules.

So, dinitrogen is two-thirds of the total number of molecules and generates two-thirds of the total pressure.

Dinitrogen exerts two-thirds of 1686 torr, i.e. 1124 torr.