Calculate the molar mass of the following substances -3 MARKS-1- Ethyne- C 2 H 22- Nitric acid- HNO 33- Methane- CH 4

Each point: 1 Mark 1. Molar mass of ethyne, C2H2 = 2 × 12 + 2 × 1 = 26 g 2. Molar mass of nitric acid, HNO3 = 1 + 14 + 3 × 16 = 63 g 3. Molar mass of methane, ...

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Standard IX

Chemistry

Molecules and Atomicity

Calculate the...

Question

Calculate the molar mass of the following substances [3 MARKS]
1. Ethyne, C₂H₂
2. Nitric acid, HNO₃
3. Methane, CH₄

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Solution

Each point: 1 Mark

1. Molar mass of ethyne, C₂H₂= 2 × 12 + 2 × 1 = 26 g
2. Molar mass of nitric acid, HNO₃ = 1 + 14 + 3 × 16 = 63 g
3. Molar mass of methane, CH₄= 12 + 4 x 1 = 16 g

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Calculate the molar mass of the following substances [3 MARKS] 1. Ethyne, C2H2 2. Nitric acid, HNO3 3. Methane, CH4

Each point: 1 Mark 1. Molar mass of ethyne, C2H2= 2 × 12 + 2 × 1 = 26 g 2. Molar mass of nitric acid, HNO3 = 1 + 14 + 3 × 16 = 63 g 3. Molar mass of methane, CH4= 12 + 4 x 1 = 16 g

Calculate the molar mass of the following substances [3 MARKS]
1. Ethyne, C₂H₂
2. Nitric acid, HNO₃
3. Methane, CH₄

Each point: 1 Mark

1. Molar mass of ethyne, C₂H₂= 2 × 12 + 2 × 1 = 26 g
2. Molar mass of nitric acid, HNO₃ = 1 + 14 + 3 × 16 = 63 g
3. Molar mass of methane, CH₄= 12 + 4 x 1 = 16 g