avogadro number is a constant that helps scientists count atoms and molecules. it is approximately equal to 602,200,000,000,000,000,000,000.

6.022 x 10²³

Explanation:

602,200,000,000,000,000,000,000

start counting spots from right to left till you get 6.022

you counted 23 spots and that's the power of 10

finally 6.022 x10²³

Avogadro's number is the number of units in one mole of any given substance.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

the answer is c. nacl