How many atoms is 50 g of He?

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asked Jul 27, 2017 165k views

1 Answer

Tolsto · Answer 1 · 2017-07-30T18:54:50+0000

Atomic mass He = 4.002 u.m.a

4.002 g --------------- 6.02x10²³ atoms
50 g ------------------ ? atoms

50 x ( 6.02x10²³) / 4.002

= 3.01x10²⁵ / 4.002

= 7.52x10²⁴ atoms of He

How many atoms is 50 g of He?

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