Chapter 4.9, Problem 4.18PP

(a)

Interpretation Introduction

Interpretation:

The balanced equation for given Barium carbonate on heating gets decomposed to barium oxide and carbon dioxide has to be written.

Concept Introduction:

Balanced Chemical equation:

A balanced chemical equation is an equation which contains same elements in same number on both the sides (reactant and product side) of the chemical equation thereby obeying the law of conservation of mass.

(b)

Interpretation Introduction

Interpretation:

The amout (in $\text{g}$) of carbon dioxide that is produced by heating $\text{50}\text{.0 g}$ of barium carbonate has to be calculated.

Concept Introduction:

Moles:

Mole of the compound is found by dividing mass of the substance with its molar mass.

  $\text{No}\text{. of moles (n) = }\frac{\text{mass}}{\text{Molar mass}}$

Mass:

Mass of the compound is calculated by mole of the compound multiplied with molar mass of the compound.

  $\text{Mass}\text{=}\text{Molar}\text{mass}\text{×}\text{mole}$