Answer:
Mass = 312 g
Explanation:
Given data:
Number of molecules of H₂ = 9.4 × 10²⁵
Mass in gram = ?
Solution:
First of all we will calculate the number of moles of H₂.
1 mole of H₂ contain 6.022× 10²³ molecules
9.4 × 10²⁵ molecules × 1 mol / 6.022× 10²³ molecules
1.56× 10² mol
156 moles of H₂:
Mass in gram:
Mass = number of mole × molar mass
Mass = 156 mol × 2 g/mol
Mass = 312 g
