Question

How many total atoms are represented by this formula 3NaOH? A.1 B.3 C.6 D.9???

Answer 1

Answer: D. 9

Step-by-step explanation:

Atom is the smallest unit of matter which may or may not have independent existence. Example:
`H`

Molecule is the smallest unit of matter which has a independent existence. Example:
`H_2`

1 molecule of
`NaOH` has 1 atom of sodium, 1 atom of oxygen and 1 atom of hydrogen and thus total of 3 atoms.

Thus if 1 molecule of
`NaOH` has total of 3 atoms.

Thus 3 molecules of
`NaOH` has total of =
`(3)/(1)* 3=9atoms`

Thus 9 atoms are represented by this formula
`3NaOH`

Answer 2

D. 9.

Step-by-step explanation:

One formula unit of NaOH contains three atoms: 1 Na, 1 O, and 1 H.

3 formula units × (3 atoms/1 formula unit) = 9 atoms