Question

1 liter of oxygen gas at stp will have mass of _grase

Answer 1

M.W of O2 is 32gms.
22.4 lit contain 32gms of O2, then
1 lit contain how much. do cross multiplication.
it will be 32/22.4 = 1.42gms.

Answer 2

The mass of 1 liter of oxygen gas at STP will be 1.43g.

Given:

Name of the element = Oxygen

Volume of the element = 1 L

To find:

Mass of 1 liter of oxygen = ?

Calculation:

∵ 22.4 L of molecule at STP = Molecular weight of molecule

In the given case, the molecule is oxygen and its molecular weight is 32g.

⇒ 22.4 L of $O_2$ at STP = 32g

∴ 1 L of O_2 at STP = X g

On cross multiplication it gives,

$X\times$ 22.4 = $1\times$ 32

22.4X = 32

X = $\frac{32}{22.4}$

X = 1.43 g

Conclusion:

Thus it is inferred that 1 liter of oxygen gas at STP will have mass of 1.43 g.

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