135g +10g- 141.48g = 3.52g
CaCO3+2HCl=CaCl2+H2O+CO2↑
100 73 44
y x 3.52g y=8g 8g/10g x100%=80%
x=5.84g 所消耗10%HCL的质量 5.84g/10%=58.4g