AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

The number of molecules present in 2 L of water provided the density of water is

1 gmL-1 is

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

1 \times 1 0^{23}

.molecules of

H_{2} O

4 \times 1 0^{23}

.molecules of

H_{2} O

5 \times 1 0^{23}

.molecules of

H_{2} O

6.022 \times 1 0^{23}

.molecules of

H_{2} O

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The number of molecules present in 2 L of water provided the density of water is
1 gmL-1 is

6.69 \times 10^{25} molecules of H_{2} O

.
⇒1 molar mass of

H_{2} O

     = 18 g mol-1
⇒1 L of H2O                     = 1000 mL
⇒2 L of H2O                     = 2000 mL
⇒Mass of 2000 mL of

H_{2} O

Volume \times Density

⇒ 2000 × 1 = 2000 g

No of moles = \frac{Mass of substance in grams}{Molar mass}

= \frac{2000}{18}

1 mole of

H_{2} O

6.022 \times 1 0^{23}

molecules of

H_{2} O

Therefore, no. of molecules of

H_{2} O

in 2 L of

H_{2} O

\frac{2000}{18} \times 6.022 \times 10^{23}

6.69 \times 10^{25} molecules of H_{2} O

.
Hence, the number of molecules present in 2 L of water provided the density of water is
1 gmL-1 is

6.69 \times 10^{25} molecules of H_{2} O

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

The number of molecules present in 2 L of water provided the density of water is 1 gmL-1 is

Best Courses for You

Detailed Solution

courses

Get Expert Academic Guidance – Connect with a Counselor Today!

The number of molecules present in 2 L of water provided the density of water is

1 gmL-1 is