Question

Find the number of moles in 10.0 grams of magnesium.
a) 0.412moles
b) 2.43 moles
c) 24.3 moles
d)243 moles

Answer 1

\[n = \frac{ m }{ M }\]
n= no. of moles
m=mass
M=Molar mass (atomic mass of the element given)