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17-12-2022
Chemistry

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M/J 09/P1/Q1
In leaded petrol there is
an additive composed of lead, carbon and hydrogen only. This compound contains
29.7% carbon and 6.19% hydrogen by mass.
What is the value of x in the empirical formula PbC₂Hx?
A 5
B 6
C 16
D 20

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