Question

______ g of hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide.

Explanation:

Step1: Apply the law of conservation of mass

According to the law of conservation of mass, the mass of reactants is equal to the mass of products. Let the mass of hydrogen be \(m\). Then \(m + 32=34\).

Step2: Solve for \(m\)

Subtract 32 from both sides of the equation: \(m=34 - 32\).

Answer:

\(2\)