Question

Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,000,000,000,000. How is this number expressed in scientific notation? A. B. C. 6.02/1023 D. 6.02 × 1023 E. 6.02 × 10-23

Answer 1

Answer : The correct option is, (D) $6.022\times 10^{23}$

Explanation :

Scientific notation : It is defined as the way or representation of expressing the number that are too big or too small that is written in the decimal form. That means always written in the power of 10 form.

For example : 700 is written as, $7\times 10^2$

As we are given that the value of Avogadro’s number is, 602,200,000,000,000,000,000,000

This number is written in scientific notation as :

$6.022\times 10^{23}$

Therefore, the correct option is, (D) $6.022\times 10^{23}$

Answer 2

Avogrado's number = 6.022 × 10^23