Question

How many moles of tungsten are in 1.05 * 10^24 atoms of tungsten?

Answer 1

1.74 moles

Step-by-step explanation:

A mole of a substance is defined as:

The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of
`^(12)C`.

Any substance has
`6.022* 10^(23)` atoms in one mole of that substance.

`\text{Number of moles}=\frac{\text{given number of atoms}}{6.022* 10^(23)}`

Given number of atoms are
`1.05* 10^(24)`

So,
`\text{Number of moles}=(1.05* 10^(24))/(6.022* 10^(23))`=
`1.74` moles