Question

The reaction: 4A + 3B → 2C + D is studied. Unknown masses of the reactants were
mixed. After a reaction time of 1 hour the analysis of the mixture showed 2 kmol of A,
1 kmol of B and 4 kmol of C. Product D was present in the mixture but could not be
analysed.
2.1.What is the mole fraction of D in the mixture? (7)
2.2.How many kilomoles A and B were initially charged? (3)
2.3.What is the limiting reactant and the % excess? (8)
2.4.What is the % conversion of the limiting reactant? (2)

Answer 1

Four meiotic divisions are required for the formation of four oospheres and only one meiotic division for the formation of four male gametes. The later is enclosed permanently inside ovule, that ripens into seed.