1) A double displacement reaction takes place when aqueous sodium carbonate reacts with aqueous tin (II) nitrate. You would expect one of the products of this reaction to be.
2) For the reaction, 3 Cu + 8HNO3 --> 3Cu(NO3)2 + 2NO + 4H2O, if you could drop 12 atoms of copper into nitric acid, how many molecules of NO would be produced?
3) When 2.0 moles of aluminum reacts completely with 3.0 moles of chlorine gas (Cl2) to form aluminum chloride, the total number of moles of the subtances in the system:
Answer: remains the same?
1 and 2 are ok.
3 needs to be redone. Write the equation on a piece of paper and you will see what happens.