Verified Answer :

MissPhiladelphia

Avogadro's number
represents the number of units in one mole of any substance. This has the value
of 6.022 x 10^23 units / mole. This number can be used to convert the number of
atoms or molecules into number of moles.

4 mol He (  6.022 x 10^23 atoms / mole ) = 2.4088 x 10^34 atoms He

Answer:

Number of atoms in 4.00 moles of helium = \(2.4092\times 10^{24}\)

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by \(N_0\).

Avogadro constant:-

\(N_a=6.023\times 10^{23}\)

Thus,

1 mole of helium contains  \(6.023\times 10^{23}\) atoms

So,

4.00 moles of helium contains  \(4.00\times 6.023\times 10^{23}\) atoms

Number of atoms in 4.00 moles of helium = \(2.4092\times 10^{24}\)

Related Questions