chemistry
posted by Cindy on .
How many grams of calcium nitrate, Ca(NO3)2, contains 24 grams of oxygen?

refer to the equation above what do you to happen to the mass of the mass of the cups during this reaction? explain

1 mole Ca(NO3)2 (the molar mass in grams) contains how many grams of oxygen? That will be 6*16 = 96 grams. Therefore,
164 g contains 96 g oxygen.
Set up a proportion and solve for g Ca(NO3)2 needed to obtain 24 g oxygen. Post your work if you get stuck.