Question

a flask containing $n$ moles of helium is being held at a temperature $t$ kelvins. if the volume of the flask is $v$ liters, the pressure that the gas exerts on the flask, in atmospheres, is given by $p = \frac{nrt}{v}$, where $r$ is a positive constant. how many moles of helium must be stored in the flask in order to produce a pressure of 5 atmospheres? $n =$

Explanation:

Step1: Substitute given pressure.

Given $P = 5$, so $5=\frac{nRT}{V}$

Step2: Solve for $n$.

Multiply both sides by $V$: $5V=nRT$. Then divide both sides by $RT$ to get $n=\frac{5V}{RT}$

Answer:

$\frac{5V}{RT}$