How many atoms are present in 48.60 g of Mg?

Question

anonymous · Answer

do you know how to convert mass to moles to number of particles?

rishavraj · Answer

@nuknow  find out the no of moles of Mg...and then proceed

ciarán95 · Answer

When talking about a single element, 1 mole of Mg will contain 6.022 x 10^23 atoms of Mg.

If we have 48.60 g of Mg, then we can find the number of moles this relates to by dividing it by the molecular mass of Mg. From a periodic table, can can find the molecular mass to be to be 24 g/mol (i.e. 1 mole = 24 grams).

Once the number of moles of Mg in 48.60 g has been found, then we can proceed to find the number of atoms.

If you have found that the sample of Mg contains 'x' moles.

We know that 1 mole = 6.022 x 10^23 atoms
                  So, x moles = (x)(6.022 x 10^23) atoms