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QUESTION

# How do you calculate the percent composition of sodium bisulfate (NaHSO4)?

Work out the M_r by adding up the A_r values as they occur in the formula, then work out the % contribution each element makes.

Work out the M_r by adding up the A_r values as they occur in the formula.

I'll use approximate values:

A_rNa=23

A_rH=1

A_rS=32

A_rO=16

M_r of NaHSO_4:

=23+1+32+(4xx16)=120

Then work out the % contribution each element makes:

%Na=(23)/(120)xx100=19.16

%H=(1)/(120)xx100=0.833

%S=(32)/(120)xx100=26.66

%O=(64)/(120)xx100=53.33