Question

Select the correct answer.

What does one mole of H2O correspond to?
A. 6.02 x 10^23 molecules of H20
B. 6.02 x 10^23 atoms of H and 6.02 X 10^23 atoms of o
C. 6.02 x 10^23 atoms of o
D. 6.02 x 10^23 atoms of H
E. 6.02 x 10^23 x 2 atoms of H

Answer 1

A.

Step-by-step explanation:

This is Avogadro's number ( the number of molecules in a mole of the substance).

Answer 2

One mole of H₂O correspond to A. 6.02 x 10²³ molecules of H₂O

Step-by-step explanation:

Avogadro Number or Avogadro Constant is called the number of particles that constitute a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023 * 10²³ particles per mole. Avogadro's number applies to any substance.

In this case the avogadro number represents the amount of molecules that exist in one mole of a pure substance, water being in this example.

Finally, one mole of H₂O correspond to A. 6.02 x 10²³ molecules of H₂O