Question

Calculate the volume occupied by 80 grams of oxygen gas at 30°C and 800 torr Hg pressure.​

Answer 1

Explanation:

huge{\texbf\red{ANSWER }}}

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\huge{\texbf\red{GIVEN }}}

Mass of oxygen = 80g

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Volume of oxygen at STP = ?

\huge{\texbf\red{SOLUTION }}}

First of all find moles of Oxygen

Moles of oxygen = mass /molar mass

Molar mass of O2 =16×2=32g/mol

Moles of Oxygen = 80 / 32

Moles of oxygen =2.5mol

Now

Moles of oxygen = Volume of oxygen /Volume atSTP

Volume of oxygen = Moles × Volume at STP

Volume of oxygen = 2.5 × 22.4

Volume of Oxygen = 56 dm^3