Question #3b507

2 Answers
Nov 16, 2017

Answer:

0.245 mol Ca

Explanation:

We only need to know the atomic mass of calcium,
#M_(Ca)=40g·mol^(-1)#

And then,
#9.8# #g·(1mol)/(40g)=0.245# #mol# #Ca#.

Nov 16, 2017

Answer:

#"0.24 moles"#

Explanation:

To convert grams to moles, divide the mass in grams by the molar mass of calcium.

#"9.8 g"/"40.078 g/mol" = "0.24 moles"#

http://rechschem.weebly.com/2017/stoichiometry