chemistry\n1. calculate the number of moles in a gas at a volume of 22 l, 1.65 atm and 25 °c.\n(k = °c + 273)
chemistry\n1. calculate the number of moles in a gas at a volume of 22 l, 1.65 atm and 25 °c.\n(k = °c + 273)
Answer
Explanation:
Step1: Convert temperature to Kelvin
$T = 25 + 273 = 298\ K$
Step2: Use the ideal gas law $PV = nRT$
We know $P = 1.65\ atm$, $V = 22\ L$, $T=298\ K$ and $R = 0.0821\ L\cdot atm/(mol\cdot K)$. Rearranging the ideal - gas law for $n$ gives $n=\frac{PV}{RT}$. Substitute the values: $n=\frac{1.65\ atm\times22\ L}{0.0821\ L\cdot atm/(mol\cdot K)\times298\ K}$ $n=\frac{36.3}{24.4658}\ mol$
Answer:
$n = 1.48\ mol$