posted by Kelly .
A 0.75 g sample of X2CO3 is dissolved in water and 80 mL of 0.20 M CaCl2 solution is added.
This is the balanced equation I have created.
X2CO3(aq) + CaCl2(aq) → CaCO3(s) + 2 XCl(aq)
Based on the ratio in your balanced equation, how many moles of X2CO3 must have reacted? How many moles of CO32- is this?
I don't know how to start.