Question

Reactions with gases (3 questions, Q10-912) Ancient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime (calcium oxide), which they produced by roasting limestone (calcium carbonate). Question 10 2 pts (a) Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (CaCO3) into solid calcium oxide and gaseous carbon dioxide. In the balanced equation, what is the molar ratio of calcium oxide to calcium carbonate? 1:1 3:1 OOOOO 2:1 1:2 1:3

Answer 1

= Calcium carbonate decomposes as . Cacoas cao t co2(g) It is a balanced Chemical equation 1 mol of Cacaz forms 'tool of Go o Mole ratio = 1:1 = 1:1 Hence first option is correct.