Question

Question 25
Find the ratio by mass of the combining elements in the following compounds.

(a) $CaC{O}_3$ (d) $C_2{H}_{5}OH$

(b) $MgC{l}_2$ (e) $N{H}_3$

(c) $H_{2}S{O}_4$ (f) $Ca(OH{)}_2$

Answer 1

(a) $CaC{O}_{3}Ca:C:O\times 340:12:16\times 340:12:4810:3:12$

(b) $MgC{l}_{2}Mg:Cl\times 224:35.5\times 224:71$

(c) $H_{2}S{O}_{4}H\times 2:S:O\times 41\times 2:32:16\times 42:32:641:16:32$

(d) $C_2{H}_{5}OHC\times 2:H\times 6:O12\times 2:1\times 6:1624:6:1612:3:8$

(e) $N{H}_{3}N:H\times 314:1\times 314:3$

(f) $Ca(OH{)}_{2}Ca:O\times 2:H\times 240:16\times 2:1\times 240:32:220:16:1$