Question

How many atoms are in 1.8722g of tungsten, W

Answer 1

`\text{6.12535 }*10^(21)\text{ atoms}`

Step-by-step explanation:

Here, we want to get the number of atoms in the given Tungsten mass

Mathematically:

1 mole of Tungsten has a mass of 184g

x moles of Tungsten will have a mass of 1.8722g

Thus:

`\begin{gathered} x*184\text{ = 1.8722g} \\ x\text{ = }(1.8722)/(184)\text{ = 0.010175 mole} \end{gathered}`

1 mole contains 6.02 * 10^23 atoms

0.010175 mole contains x atoms

Thus:

`x\text{ = 0.010175}*6.02*10^(23)\text{ = 6.12535 }*10^(21)\text{ atoms}`