Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • If the radius of water molecule is and it get adsorbed on a <img alt="\math

If the radius of water molecule is \mathrm{0.19 \: nm} and it get adsorbed on a \mathrm{25 \: m^{2}} charcoal sheet. How many moles of water are adsorbed on the sheet?

Option: 1

0.18 mmol


Option: 2

0.73 mmol


Option: 3

0.018 mmol


Option: 4

0.36 mmol


Answers (1)

Surface area occupied by each water molecule

\\=\pi \mathrm{r}^2\\=3.14 \times 0.19 \times 0.19 \times 10^{-18} \mathrm{~m}^2\\=0.1133 \times 10^{-18}\mathrm{~m^2}\\=11.33 \times 10^{-20} \mathrm{~m}^2

 

Area of the sheet =25 \mathrm{~m}^2

Total number of water molecule =25 \mathrm{~m}^2 / 11.33 \times 10^{-20}=2.2 \times 10^{20}

No. of moles of water

\\=2.2 \times 10^{20} / 6.023 \times 10^{23} \\=0.366 \times 10^{-3} \mathrm{~mol} \\=0.366 \mathrm{mmol}

Hence option 4 is correct.

Posted by

Ramraj Saini

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

Karnataka: NEET candidate dies by suicide; no note recovered
anam-khan

CBSE Re-evaluation Row: Dharmendra Pradhan seeks detailed report on technical failures
anam-khan

Before NEET, CMC Vellore’s unique MBBS admissions tested aptitude along with merit; paper-leak restarts debate

Latest Question