Question

Calculate the mass of:

a. 0.5 moles of magnesium atoms

b. 0.01 moles of aluminium atoms

Answer 1

12grams

Step-by-step explanation:

moles=mass/molar mass

-molar mass of Mg=24

-mass =x

-mole of Mg=0.5

using the formula moles=mass/molar mass,replace the values

so 0.5=x/24

so x=24×0.5

x=12grams

(where x represents mass in grams)