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Sergeeva-Olga [200]
4 years ago
15

What is the total number of molecules in 11.2 liters of N2 gas at STP?

Chemistry
1 answer:
qwelly [4]4 years ago
3 0

Answer:

The number of molecules is 3,01E23 of N2

Explanation:

We use the formula PV=nRT, and STP: 1 atm of pressure and 273 K of temperature.

PV=nRT  ---> n=PV/RT

n= 1 atm x 11,2 l /0,082 l atm/ Kmol x 273K

n= 0, 5 mol

We use the number of Avogadro:

1 mol---------6, 02E23 molecules

0,5 mol----- x= (0,5 mol x6, 02E23 molecules)/ 1 mol = 3,01E23

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