Avogadro’s number is a constant that 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?

Avogadro’s number in Scientific notation is: 6.02x10^23

Explanation:

Avogadro's number is defined as the number of atoms present in one mole of any substance.

Avogadro's number is equal to 602,200,000,000,000,000,000,000.

Since it is a large number therefore Avogadro used scientific notation to express the value for easy understanding.

Therefore, scientific notation of Avogadro's number is

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

the answer to your question is c