Question

what mass of product is formed during the reaction in the graphic below? hydrogen + bromine→ hydrogen bromide 16.25 g? g give your answer to the correct number of significant figures.

Explanation:

Step1: Balance the chemical equation

$\ce{H_{2} + Br_{2} -> 2HBr}$

Step2: Identify reactant mass

Given mass of $\ce{H_{2} + Br_{2}} = 16.25\ \text{g}$

Step3: Apply Law of Conservation of Mass

Mass of product = Mass of reactants
$\text{Mass of } \ce{HBr} = 16.25\ \text{g}$

Step4: Round to correct sig figs

16.25 g has 4 significant figures, so the product mass retains 4 sig figs.

Answer:

16.25 g