How much atoms does helium have?

Answer 1

Atomic Mass of helium is 4.002602

Answer 2

The number of atoms in a given sample of helium depends on the size of the sample.

One mole of helium at standard temperature and pressure (1 atm & 0°C), for example, occupies 22.4 liters and has 6.02*(10^23) atoms, otherwise known as Avogadro's Number.

Answer 3

1 atom weighs 4 amu

or

1 mole (6.023 x 1023 atoms) weigh 4.0026 g

Answer 4

4.0026 g of helium will have 6.023 x 1023 atoms

Answer 5

According to me, the atomic weight of the helium is 4.0026 but not 4. You need a complete answer, right? Well, here it is. 4.0026.

Answer 6

4

Helium has 2 neutrons and 2 protons. Each proton or neutron is 1 dalton. The combined mass is therefore 4 daltons.

Answer 7

The density of helium is approx. 0,9 g/L.