Write the molecular mass of
$H g C O_{3}, C a C O_{3}, N a H C O_{3}, C H_{3} C H_{2} O H, A l_{2}, (S O_{4})_{2}$

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Solution

$H g C O_{3} ⟶ (200.5) + (12) + 3 (16) = 260.6 u$
$C a C O_{3} ⟶ 40 + 12 + 3 (16) = 100 u$
$N a H C O_{3} ⟶ 23 + 1 + 12 + 3 (16) = 84 u$
$C H_{3} C H_{2} O H ⟶ 2 (12) + 6 (1) + 16 = 46 u$
$A l_{2} (S O_{4})_{3} ⟶ 2 (27) + 3 [32 + 4 (16)] = 342 u$
where $u$ = atomic mass units

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