Can someone help me with this question?

May 7, 2017

a) $C a C {O}_{3} \to C a O + C {O}_{2}$
b) 94.33%

Explanation:

a) Formula of carbon dioxide is $C {O}_{2}$ as valency of C is +4 and of O it is -2
Formula of calcium carbonate is $C a C {O}_{3}$ as valency of Ca is +2
(You need to know the valency, and a tip to form the equation is to get the valency of every compound/element in the equation as 0)

b) 1 mole CaO = 56g
13100g = $\frac{13100}{56}$moles
= 233.93 moles
1 mole $C a C {O}_{3}$ = 100g
24800g = 248 moles
% yield = $\left(\frac{233.93}{248}\right) \cdot 100$
= 94.33%