When O2 reacts with H2S the products are SO2 and H2O.
Mixture Y contains an equal number of the two molecules shown, and no other molecules.
8 = O18
1 – S32
16 – H
Which statements about Y are correct?
1 The average Mr in Y is 34.
2 If some oxygen molecules are removed from Y, the average Mr of the mixture remains the
3 When mixture Y is ignited, some H2S remains unreacted.
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