Question

How many atoms of gold are in a gold nugget with a mass of 4.25g

Answer 1

It will help you.

How many atoms of gold of (196.97 g/mol) are in a gold nugget with a mass of 4.25g, and there are answer is 1.30⋅10^22 with molecules or atoms of gold.

Answer 2

Answer : The number of atoms of gold is,
`1.32* 10^(22)`

Explanation : Given,

Mass of gold = 4.25 g

Molar mass of gold = 196.96 g/mole

First we have to calculate the moles of gold.

`\text{Moles of gold}=\frac{\text{Mass of gold}}{\text{Molar mass of gold}}=(4.25g)/(196.96g/mole)=0.022mole`

Now we have to calculate the number of atoms of gold.

As, 1 mole of gold contains
`6.022* 10^(23)` number of gold atoms

So, 0.022 mole of gold contains
`0.022* (6.022* 10^(23))=1.32* 10^(22)` number of gold atoms

Therefore, the number of atoms of gold is,
`1.32* 10^(22)`