Some sample of certain elements are given
8gH 64802 28gN2 10gHe
a) Which among the has highest number of molecules?
b) Which sample occupies a volume of 22.41 at STP ? [At. mass H= 1,
He= 4, N= 14, O = 16 ]
Answers
Answered by
2
Explanation:
The maximum number of molecules is present in 15 L of H
2
gas at STP.
1 mole of a gas at STP occupies a volume of 22.4 L.
15 L of gas corresponds to
22.4L
15L
=0.67 moles.
(B) 5 L of N
2
gas at STP :
1 mole of a gas at STP occupies a volume of 22.4 L.
5 L of gas corresponds to
22.4L
5L
=0.22 moles
(C) 0.5 g of H
2
gas (molecular weight 2 g/mol) corresponds to
2g/mol
0.5g
=0.25 moles.
(D) 10 g of O
2
gas (molecular weight 3 g/mol) corresponds to
32g/mol
10g
=0.3125 moles.
Higher is the number of moles of a gas, higher will be its number of molecules.
therefore, 15L of H2 gas at STPSTP is the answer.
Answered by
1
Answer:
answer is 34
Explanation:
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