CaCO3 M=40+12+3.16=100
100gCaCO3---------1mol CaCO3
HNO3 M=1+14+3.16=63
63g HNO3--------------1mol HNO3
CuSO4 M=64+32+4.16=160
160g CuSO4------------1mol CuSO4
CO2 M=12+2.16=44
44 g CO2-----------1mol CO2
AgNO3 M=108+14+3.16=170
170g AgNO3-----------1mol AgNO3