When crystals of calcium nitrate(V), Ca(NO3)2 4H20 are heated, they
decompose to produce steam, nitrogen (IV) oxide, oxygen and calcium oxide.
2Ca(NO3)2.4H20 (s) → 2CaO (s) + 4NO2 (g) + O2 (g) + 8H20 (g)
In experiment,3.54 g of Ca(NO3)2 4H20 was heated until it decomposed
completely
a) Calculate the number of moles of Ca(NO3)2 4H2O present in 3.54 g of the
crystals.
b) Calculate the mass of steam produced
c) Calculate the volume of O2 gas that evolved at s.tp
Solved
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Ответ:
B
Explanation: