200g+147g-329.4g=17.6gNa2CO3+2HCl==2NaCl+H2O+CO2↑106 44x 17.6g106/x=44/17.6gx=42.4g44g样品中含碳酸钠 42.4g 氯化钠 44g-42.4g=1.6g
