How many calcium atoms are in a formula

unit of calcium hydrogen carbonate?

1. 1
2. 2
3. 4
4. 3
5. 5

3 answers

CaHCO3

Hmmmm

OMG, you are correct.

Thank you haha I was just confused because it's Ca(HCO3)2 and I didn't know if it was a tricky question