Question

calculate the volume of 7 mol of hydrogen at stp.
0.3 liters
20 liters
156.8 liters
3 liters

Explanation:

Step1: Recall molar - volume at STP

At STP (Standard Temperature and Pressure: 0°C or 273 K and 1 atm), the molar volume of any ideal gas is 22.4 L/mol.

Step2: Use the formula for volume calculation

The formula for calculating the volume $V$ of a gas given the number of moles $n$ and molar volume $V_m$ is $V = n\times V_m$. Here, $n = 7$ mol and $V_m=22.4$ L/mol. So, $V=7\times22.4$ L.

Step3: Perform the multiplication

$7\times22.4 = 156.8$ L.

Answer:

C. 156.8 liters