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

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.

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JenelleTeeters JenelleTeeters · Answer 2 · 2019-07-21T07:24:21+02:00

Answer:

4 moles of He

Explanation:

We have, 16g of He (Helium).

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

[tex]\text{Number of moles} = \frac{\text{Given mass}}{\text{Molar mass}}[/tex].

Here, we have 16g of He.

So, [tex]\text{Given mass}=16g[/tex]

Molar mass of He is 4g

On substituting the values in the equation, we get

[tex]\text{Number of moles} = \frac{\text{16}}{\text{4}}[/tex]

[tex]\text{Number of moles}=4 \text{moles of He}[/tex]