Chemistry 問題---不難

a. 21.6/1000 x 0.5=0.0108mole
b. the ratio is 1:2(carbonate:acid)
the no. of mole of carbonate=0.0108x0.5
=0.0054
c. 0.0054x10=0.054
d. 7.46g of the compound has 0.054mole
the for 1 mole of compound, 7.46/.054=138
the r.a.m. of X=(138-12-48)/2=39

2008-05-29 20:27:39 補充：
可能問題太過簡單就會少人答.