Question

How many atoms of hydrogen are there in one molecule of water, if the chemical formula is H20?

A. 0
B. 1
C. 2
D. 3

Answer 1

C

Step-by-step explanation:

2 because if you look closely, there is a two behind the hydrogen. (H20). This means that there are two hydrogen atoms in the molecule.

Answer 2

C

Step-by-step explanation:

Because next to hydrogen symbol 'H' the number 2 is written which tells us the number of hydrogen which are present and also because every water contains 2 hydrogen atoms and 1 oxygen atom.