How many moles of He are in 16 g of element?

Answer 1

using the formula: n=m/gfm

no. of moles=mass/gfm

you take the gram formula mass (gfm) as 4.

and given the mass is 16g, both numbers can be substituted into the formula...

n=16/4

= 4

the number of moles present in 16g of helium is 4 moles.

Answer 2

The Atomic Mass of helium is 4, so there are 4 moles of helium in 16g. Since we want the same number of atoms, we want 4 moles of H, which is 2 moles of H2. (If you really meant same number of molecules of hydrogen as there are atoms of helium, the answer is 4 instead.)

Answer 3

He = helium

16 grams He (1 mole He/4.003 grams)

= 3.99 moles He

You can call it 4.0 moles He

Answer 4

There are approximately 4.0 moles of Helium in 16 grams of the element.

Answer 5

4 g of helium is 1 mole.

So 16 g of helium is 4 moles.

Answer 6

4 g of helium is 1 mole.

So 16 g of helium is 4 moles.

Answer 7

4.0026 g (1 mole of He) has 6.023 x 1023 atoms.

So, 16.142 g will have 24.29 x 1023 atoms.

Answer 8

It depends upon what element is.

Answer 9

The answer is 4 moles.