# Can someone help me with this question?

##### 1 Answer

May 7, 2017

a)

b) 94.33%

#### Explanation:

a) Formula of carbon dioxide is

Formula of calcium carbonate is

(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 =

= 233.93 moles

1 mole

24800g = 248 moles

% yield =

= 94.33%