Question

Study the balanced chemical reaction.

Answer 1

Answer:

C) 5.94% is hydrogen.

Explanation:

H2 H2O2

2.02 g/mol; 34.02 g/mol

x :: 100.0

x=100×2.02/34.02=5.94%

Answer 2

Answer:

Option C. 5.94% is hydrogen.

Explanation:

From the question given, we obtained the following:

Molar Mass of H2O2 = 34.02 g/mol

Molar Mass of H2 = 2.02 g/mol

Mass of H2O2 produced = 100g

H2 + O2 → H2O2

From the equation,

2.02g of Hydrogen produced 34.02g of H2O2.

Therefore, Xg of H2 will produce 100g of H2O2 i.e

Xg of H2 = (2.02x100)/34.02 = 5.94g

Now, we can calculate the percentage of H2 in H2O2 produced by doing the following:

% Mass of H2 in H2O2 = (5.94/100) x 100 = 5.94%