Question

how many molecules of oxygen gasare present in 1litre of air containing 80 percent volume ​

Answer 1

Answer:

Hence molecules present in 1 litre air containing 80 percent volume of at STP is 2.1 X 10^22 molecules.

Explanation:

Hope it's helps you.

Answer 2

Answer:

HERE is your answer ☺️☺️

There are two ways to answer which one is easier you can do that

1st method

y

Amount of oxygen in air is 1000 ml X 80% = 800 ml

At STP,

22400 ml O2 contains 6.022X10^23 molecules

1 ml O2 contains 6.022X10^23 / 22400 molecules

800 ml O2 contains (6.022X10^23/ 22400)X800 molecules = 2.15 X 1022molecules

2nd method

I

First, we will have to find amount of energy in one oxygen. According to question, we have to find 800ml molecules. ▪️ Hence, molecules present in 1 litre air containing 80% volume of at STP is 2.15x 10^22 molecules.Sep 27, 2018

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