Question

What mass of magnesium, Mg, contains the same number of atoms as 12g of Carbon, C
Could you please show the method too
Thanx :)

Answer 1

The same number of moles contain the same number of particles, in this case atoms.

12 g of C will contain 1 mole of atoms as the molar mass of carbon is 12 g mole^-1 to 2 sig figs.

So a molar mass of magnesium will contain the same number of atoms. You need to look up the molar mass of Mg.

Answer 2

Mass=moles× molar mass massif Mg =24÷12=2

Answer 3

carbon=12/12
magnesium=12/24