Question

How much sugar will be required if each person on earth is given $100$ molecules of sugar, if the population of earth is taken to be $3\times {10}^{10}$?

• A. $170.43\times {10}^{-10}g$
• B. $170.43\times {10}^{-11}g$
• C. $340.86\times {10}^{-11}g$
• D. $340.86\times {10}^{-10}g$

Answer 1

The correct option is B

$170.43\times {10}^{-11}g$

No. of molecules required = $3\times {10}^{10}\times {10}^2=3\times {10}^{12}$

$6\times {10}^{23}$ molecules weight 342 g

$3\times {10}^{12}$ molecules weight?

$170.43\times {10}^{-11}g$