T = 25 °C + 273.15 = 298.15 K
Calculate for molar mass of methane (CH4) in kg/mol:
• molar mass of N2: 2 N x 14.01 g/mol = 28.02 g/mol
• 1 kg = 103 g
The root mean square speed of H2 molecules at 25 °C is about 1.6 km/s. What is the root mean square speed of a N2 molecule at 25 °C?
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