Question

How many moles are in a 28.35 g sample of CaCO3? (Round your answer to 2 digits.) *

Answer 1

Answer:

0.28 moles

Explanation:

In 10g of CaCO3= 1/100×10 = 0.1 mole

So, in 28.35g of CaCO3= 1/100×28.35 = 0.2835

Rounding off in two digits = 0.28 mole