Asample of argon gas at stp occupies 17.0 l. what mass of argon is present in the container?

- 30.3 g Argon.

Solution:- It asks to calculate the mass of Argon for it's 17.0 L at STP.

We know that, at STP (standard temperature and pressure), the volume of 1 mol of a gas is 22.4 L. let's calculate the moles of argon gas in it's given 17.0 L volume and multiplied it by the atomic mass of argon to get the grams. The calculations are shown as:

(where 39.95 is the atomic mass of Ar.)

= 30.3 g

So, the mass of 17.0 L of argon at STP is 30.3 g.

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