Explanation:
First, we need to know that Calcium oxide is:
CaO.
Molar mass of it is:
Ca = 40 g/mol
O = 16 g/mol
CaO = 56 g/mol
To discover the number in moles of 5.45 g of CaO we just need to use the following formula:
n = m/MM
m = 5.45
MM = 56 g/mol
n = 5.45/56
n = 0.09732 moles
Answer:
0.09732 moles
