Which example has 1.8×10^24 hydrogen atoms?

1 mole of hydrogen gas (h2)

1 mole of ammonia (nh3)

1 mole of peroxide (h2o2)

1 mole of water (h2o)

NH₃

Explanation:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

one mole of NH₃ have 3 hydrogen atoms. Thus

3 × 6.022 × 10²³ atoms

18.066 × 10²³ atoms

1.8 × 10²⁴ atoms

while all other options are incorrect because all have two hydrogen atoms.

2× 6.022 × 10²³ atoms

12.044 × 10²³ atoms

1.2 × 10²⁴ atoms

3

explanation:

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons