Question

How many moles are in 3 grams of Hydrogen gas.

Answer 1

Number of moles = 1.5 mol

Step-by-step explanation:

Given data:

Number of moles = ?

Mass in gram = 3 g

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of hydrogen gas = 2.02 g/mol

By putting values,

Number of moles = 3 g / 2.02 g/mol

Number of moles = 1.5 mol