Question

A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. What mass of precipitate forms in this reaction?

I just don't understand how to get the answer. Can someone please show me and explain to me how to do this.
I Think the answer is Na2CO3 but its a 1:1 ratio but I don't know if I need to find the molar masses of each compound? HELP PLEASE!
http://www.jiskha.com/display.cgi?id=1361814261

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