Question

How many moles of He are in 16g of the element

Answer 1

Molar mass of helium is 4.00 g/mol.
Mole (mol): The number of particles (atoms or molecules) in a.
sample of element or compound with a mass in grams equal to the.
atomic (or molecular) weight.

Answer 2

4 moles of He

Step-by-step explanation:

We have, 16g of He (Helium).

To calculate the number of moles in given amount of a substance, we have the formula.

`\text{Number of moles} = \frac{\text{Given mass}}{\text{Molar mass}}`.

Here, we have 16g of He.

So,
`\text{Given mass}=16g`

Molar mass of He is 4g

On substituting the values in the equation, we get

`\text{Number of moles} = \frac{\text{16}}{\text{4}}`

`\text{Number of moles}=4 \text{moles of He}`