Find the mass of oxygen contained in 1 kg of Potassium nitrate KNO 3A- 475-5 gB- 485-5 gC- 475-2 gD- 485-2 g

The correct option is C 475.2 gMolar mass of KNO3 = 39+14+48=101 ...

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Standard VII

Chemistry

Atomic Mass

Find the mass...

Question

Find the mass of oxygen contained in 1 kg of Potassium nitrate (KNO₃)

475.5 g

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485.5 g

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475.2 g

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485.2 g

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Solution

The correct option is C 475.2 g
Molar mass of KNO₃ = 39+14+48=101

% of O in KNO₃= $\frac{48}{101} \times 100$

so, mass of Oxygen in 1000 g

= 0.4752 x 100 = 475.2 g

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Find the mass of oxygen contained in 1 kg of Potassium nitrate (KNO3)

The correct option is C 475.2 gMolar mass of KNO3 = 39+14+48=101 % of O in KNO3 = 48101×100 so, mass of Oxygen in 1000 g = 0.4752 x 100 = 475.2 g

Find the mass of oxygen contained in 1 kg of Potassium nitrate (KNO₃)

The correct option is C 475.2 g
Molar mass of KNO₃ = 39+14+48=101

% of O in KNO₃= $\frac{48}{101} \times 100$

so, mass of Oxygen in 1000 g

= 0.4752 x 100 = 475.2 g