Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

The maximum number of molecules is present in. (a) 15 L of H2 gas at STP (b) 5 L of N2 gas at STP. (c) 1.5 g of H2 gas (d) 5 g of O2 gas
Asked by kdimple765 | 17 Jul, 2022, 01:24: PM
Expert Answer
Dear Student,
 

The maximum number of molecules is present in 15 L of H2​ gas at STP.

(a) 1 mole of a gas at STP occupies a volume of 22.4 L. 

15 L of H2 gas corresponds to 15 L / 22.4 L​ = 0.67 moles.

(b) 5 L of N2​ gas at STP :

1 mole of a gas at STP occupies a volume of 22.4 L. 

5 L of gas corresponds to 5 L / 22.4 L ​= 0.22 moles.

(c) 1.5 g of H2​ gas (molecular weight 2 g/mol) corresponds to 1.5g​ / 2 g/mol = 0.75 moles.

(d) 5 g of O2​ gas (molecular weight 32 g/mol) corresponds to 5 g / 32 g/mol ​= 0.1562 moles.

Higher is the number of moles of a gas, higher will be its number of molecules.

Answered by | 19 Jul, 2022, 02:20: PM
CBSE 11-science - Chemistry
Asked by kdimple765 | 17 Jul, 2022, 01:24: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by alfirozislam900 | 03 Jul, 2022, 01:24: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by alfirozislam900 | 03 Jul, 2022, 01:23: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by arpitsingh373667 | 24 Jun, 2022, 05:00: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by bhagwatkrutika6 | 22 Jun, 2022, 08:09: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by deathkiller9875 | 13 Jun, 2022, 08:14: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by dhankharbhupesh53 | 21 May, 2022, 05:18: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by vedantkirange498 | 14 Mar, 2022, 04:25: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by shivamkumarsawnaugadh | 17 Nov, 2021, 10:07: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by sofisalman584 | 21 Sep, 2021, 10:26: AM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×