How many oxygen molecules fill a $50*dm^3$ tank under normal conditions?

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Answer 1 · 2016-03-18T17:35:14

There are approx. $2$ $mol$ $O_2$ molecules at $298K$ in a $50$ $dm^3$ volume

We assume a temperature of $298K$ , and a pressure of $1$ $atm$ . If we don't make these assumptions, we cannot answer the question.

The molar volume of an ideal gas under these conditions is $24.5$ $dm^3$ .

So $(50.0*dm^3)/(24.5*dm^3*mol^-1)$ $~=$ $2*mol$ $O_2$ gas.

How many oxygen molecules fill a 50*dm^350*dm^3 tank under normal conditions?