Calculate the mass of sodium (in kg) present in 95 kg of a crude sampl

1.	Calculate the mass of sodium (in kg) present in 95 kg of a crude sample of sodium nitrate whose percentage purity is 70%.
Answer» Sodium Nitrate = NaNO₃ Molecular mass of Sodium Nitrate = 23 + 14 + 48 = 85 100% pure 85 g of NaNO₃ contains 23 g of Sodium. 100% pure 95 x 103 g of NaNO₃ will contains 23/85 x 95 x 10³ = 25.70 x 10³ g of Sodium. 100% pure NaNO₃ contains 25.70 x 10³ g of Sodium. ∴ 70% pure NaNO₃ will contains = 1 mg = 17990 g (or) 17.99 Kg of Na.

Calculate the mass of sodium (in kg) present in 95 kg of a crude sample of sodium nitrate whose percentage purity is 70%.

Answer»

Sodium Nitrate = NaNO₃

Molecular mass of Sodium Nitrate = 23 + 14 + 48 = 85

100% pure 85 g of NaNO₃ contains 23 g of Sodium.

100% pure 95 x 103 g of NaNO₃ will contains 23/85 x 95 x 10³

= 25.70 x 10³ g of Sodium.

100% pure NaNO₃ contains 25.70 x 10³ g of Sodium.

∴ 70% pure NaNO₃ will contains = 1 mg

= 17990 g (or) 17.99 Kg of Na.