Question

Calculate number of moles of hydrogen in 0.448litre of hydrogen gas at STP

Answer 1

Answer: 0.02

Explanation:1mole=22.4lits

1mole of hydrogen will gives 22.4lit

X moles of hydrogen will gives 0.448lit

=>x=0.448/22.4

=>x=0.02

Answer 2

At STP, 0.448 liters of Hydrogen gas contains 0.02 moles of hydrogen.

Given:

Weight of hydrogen = 0.448 liters

To find:

Number of moles of hydrogen in 0.448 liter of hydrogen gas at STP.

Calculation:

Let the number of moles of hydrogen in 0.448 liter of hydrogen gas at STP be 'X'.

At STP, 1 mole of all gas weighs 22.4 liters. Thus it can be expressed as

1 mole of hydrogen gas = 22.4 liters

∴ X mole of hydrogen gas = 0.448 liters

When the above given equations are cross multiplied, it gives

X × 22.4 = 1 × 0.448

X = $\frac{1\times 0.448}{22.4}$

X = $\frac{0.448}{22.4}$

X = 0.02

Conclusion:

Number of moles of hydrogen in 0.448litre of hydrogen gas at STP is calculated as 0.02 moles.

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