Question

How many atoms of hydrogen are in 3 moles of ammonia, NH3?

Answer 1

`5.4198` ×
`10^(24)` atoms of hydrogen

Step-by-step explanation:

Firstly, we need to know how many atoms of
`NH_(3)` are there in 3 moles of
`NH_(3)`.

We know that there is
`6.022` ×
`10^(23)` atoms in a mole of any substance.

`6.022` ×
`10^(23)` is Avogadro's Constant

`6.022` ×
`10^(23)` × 3 =
`1.8066` ×
`10^(24)`

Therefore in 3 moles of ammonia, there are
`1.8066` ×
`10^(24)` atoms.

Next, you should determine how many molecules of an element is present in ammonia.

There is 1 Nitrogen molecule and 3 Hydrogen molecules for every mole of ammonia.

Finally, since we know 3 moles of ammonia contains
`1.8066` ×
`10^(24)` atoms, we just have to multiply accordingly to get the individual amount of atoms of an element a compound has.

For Nitrogen :

1 ×
`1.8066` ×
`10^(24)` =
`1.8066` ×
`10^(24)` atoms of nitrogen

For Hydrogen :

3 ×
`1.8066` ×
`10^(24)` =
`5.4198` ×
`10^(24)` atoms of hydrogen

Therefore, there is
`5.4198` ×
`10^(24)` hydrogen atoms in 3 moles of ammonia.

Hope this answer helped!