Chapter 9, Problem 2ST

Interpretation Introduction

Interpretation:

In the reaction, ${\text{2H}}_{\text{2}}\text{O}\left(l\right)\to {\text{2H}}_{\text{2}}\left(g\right){\text{+O}}_{\text{2}}\left(g\right)$, the moles of water decompose to yield $0.500\text{mol}$ of oxygen gas is to be predicted.

Concept Introduction:

The quantity of a substance having same number of atoms, ions, or molecules as the number of atoms in 12g of $\text{carbon-12}$ is defined as a mole.

A balanced chemical equation involves equal number of atoms on both the sides of the equation, that is, the reactants and products. It follows the law of conservation of mass.