# If an ideal gas has a pressure of 2.65 atm, a temperature of 92.55 °C, and has a volume of 51.43 L, how many moles of gas are in the sample?

Approx. $4.5 \cdot m o l$
$n = \frac{P V}{R T}$ $=$ $\frac{2.65 \cdot a t m \times 51.43 \cdot L}{0.0821 \cdot L \cdot a t m \cdot {K}^{-} 1 \cdot m o {l}^{-} 1 \times 365.7 K}$
The Ideal Gs Equation requires absolute temperature values: $T \left({\text{Kelvin")=T(}}^{\circ} C e l s i u s + 273.15\right)$.