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Molecular Mass

Find the mole...

Question

Find the molecular mass of:
(a) $H_{2} S$ (b) $H C l$ (c) $N H_{3}$ (d) $C l_{2}$ (e) $C H_{3} C O O H$ (f) $C H_{3} C H O$

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Solution

The molecular mass $H$ is 1 g.
The molecular mass of $S$ is 32 g.
The molecular mass of $C l$ is 35.5 g.
The molecular mass of $N$ is 14 g.
The molecular mass of $C$ is 12 g.

$H_{2} S$ is 2 × 1 + 32 = 34 g.

$H C l$ is 1 + 35.5 = 36.5 g.

$N H_{3}$ is 14 + 3 × 1 = 17 g.

$C l_{2}$ is 2 × 35.5 = 71 g.

$C H_{3} C O O H$ is 2 × 12 + 4 × 1 + 2 × 16 = 60 g.

$C H_{3} C H O$ is 2 × 12 + 16 + 4 × 1 = 34 g.

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N H_{3}

N H_{4} C l

C H_{3} C O O H

C H_{3} C O O N a

H C l

N a C l

C + O_{2} \to C O_{2}

H_{2} + C l_{2} \to H C l

N_{2} + H_{2} \to N H_{3}

F e + O_{2} \to F e_{2} O_{3}

{C H}_{3} C H = {C H}_{2} + I C l ⟶

{C l}_{2} + h o t N a O H ⟶

{C l}_{2} + S^{2 -} ⟶

{S O}_{2} + I_{2} + H_{2} O ⟶

{S n C l}_{2} + H C l + I_{2} ⟶

Question 1
Calculate the molecular masses of $H_{2}, O_{2}, C l_{2}, C O_{2}, C H_{4}, C_{2} H_{6}, C_{2} H_{4}, N H_{3}, C H_{3} O H$ .

C_{2} H_{4} + C L_{2} \to \dots \dots

C_{2} H_{4} + H C l \to \dots \dots

C a C_{2} + H_{2} O \to \dots \dots

C_{2} H_{2} + B r_{2} \to \dots \dots

C_{2} H_{5} O H [O] - ---- \to K_{2} C r_{2} O_{7} \dots \dots

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