0.25 pts What is the total number of molecules in 11.2 liters of $N_{2}$ $N_2$ gas at STP?

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Answer 1 · 2017-04-30T05:53:52

$The molar volume at STP is (depending on the syllabus.......)$ $"The molar volume at STP is (depending on the syllabus.......)"$

The molar volume at STP is (depending on the syllabus) is $22.4 \cdot L \cdot m o l^{- 1}$ $22.4*L*mol^-1$ . Ideality is assumed.

And to find the number of gaseous molecules, we simply muliltply the molar quantity by $N_{A}$ $N_A$ , $Avogadro's number$ $"Avogadro's number"$ .

So we simply divide the volume by the molar volume:

$(11.2*cancelL)/(22.4*cancelL*mol^-1)xxN_A=1/2xx1/(1/(mol))xxN_A$ .

$1/2xxmolxx6.022xx10^23*mol^-1=3.01xx10^23$ gaseous molecules........

0.25 pts What is the total number of molecules in 11.2 liters of N_2N2N_2 gas at STP?