What does Ca^(2+) + Na2CO3 create?

Question

What does Ba^(2+) + Na2CO3 create?
What does Ba^(2+) + Na2CrO4 create?

Thank You

Answer 1

CaCO3
BaCO3
BaCrO4
See this list of solubilities. You should learn this chart.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html