# Question 621cc

Nov 28, 2015

$285.7 \text{ mL}$

#### Explanation:

Use the following rule: $\frac{{P}_{1} {V}_{1}}{T} _ 1 = \frac{{P}_{2} {V}_{2}}{T} _ 2$

(Remember that we will always use temperature in Kelvin. When we have a degree measure in Celsius, we add 273˚# to convert.)

Plug in what we know:

$\frac{720 \times 325}{303} = \frac{900 \times {V}_{2}}{333}$

${V}_{2} = 285.7 \text{ mL}$