Question

Calculate the mass percent of 0.485 g of H, which reacts with oxygen to form 2.32 g H2O

Answer 1

Mass % of hydrogen = 20.9 %

Step-by-step explanation:

Given data:

Mass of hydrogen = 0.485 g

Mass of water = 2.32 g

Mass percent of hydrogen = ?

Solution:

Mass % of hydrogen = mass of hydrogen / mass of water × 100

Mass % of hydrogen = 0.485 g/ 2.32 g × 100

Mass % of hydrogen = 0.209 × 100

Mass % of hydrogen = 20.9 %