Question

How many atoms are in 1.00 moles of He

Answer 1

1.00 mole of He have
`6,02x10^(23)` atoms.

Step-by-step explanation:

To solve this exercise it is important to know the definition of Avogadro's number

Avogadro's number is the proportional factor that relates the molar mass of a substance to the number of elementary units (atoms, molecules, particles, ions, electrons) that constitute it and its magnitude is equal to 6.022 140 857 × 10²³

One mole of helium we have
`6,02x10^(23)` atoms.