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Answer the following question in a few sentences:
 
Find the ratio by mass of the combining elements in the following compounds.
(You may use Appendix-III).
 
(a). \(CaCO_3\)
Ca:C:O x 3,
40:12:16 x 3,
40:12:48,
.
 
(b). \(MgCl_2\)
Mg:Cl x 2,
24:35.5 x 2,
.
 
(c). \(H_2SO_4\)
H x 2:S:O x 4,
1 x 2:32:16 x 4,
2:32:63,
.
 
(d). \(C_2H_5OH\)
C x 2:H x 6:O,
12 x 2: 1 x 6:16,
24:6:16,
.
 
(e). \(NH_3\)
N:H x 3,
14:1 x 3,
.
 
(f). \(Ca(OH)_2\)
Ca:O x 2: H x 2,
40:16 x 2:1 x 2,
40:32:2,
.