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6.02 \times 10^{20}molecules of urea are present in 100 ml of its solution. The concentration of urea solution is

  • Option 1)

    0.001 M

  • Option 2)

    0.01 M

  • Option 3)

    0.02 M

  • Option 4)

    0.1 M

 

Answers (1)

best_answer

As we learnt in

Molarity -

Molarity = \frac{Moles \: of \: solute}{V\! ol.of\: solution(L)}

-

 

Molarity=\frac{Moles\ of\ Solute}{Volume\ of\ Solution\ in\ L}

M=\frac{6.02\times 10^{20}\times 1000}{6.022\times10^{23}\times 100}=0.01 M

Correct option is 2.

 


Option 1)

0.001 M

This is an incorrect option.

Option 2)

0.01 M

This is the correct option.

Option 3)

0.02 M

This is an incorrect option.

Option 4)

0.1 M

This is an incorrect option.

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