Answer to Question #122383 in Chemistry for aljoc

Question

Ammonium nitrate is widely used as a fertilizer, but it can also be used as an explosive. The decomposition of the solid ammonium nitrate produced nitrogen gas, oxygen gas and water vapour. Predict the numbers of molecules of water vapor that are produced along with 6.02 x 1023 molecules of nitrogen.

Answer 1

Solution:

The balanced chemical equation:

2NH₄NO₃ → 2N₂ + O₂ + 4H₂O

According to the chemical equation: n(N₂)/2 = n(H₂O)/4

Or: n(N₂) = n(H₂O)/2

One mole of any substance contains 6.02×10²³ units of that substance.

Thus:

N(N₂) = N(H₂O)/2

N(H₂O)= 2 × N(N₂) = 2 × (6.02×10²³) = 1.204×10²⁴ molecules

Answer: 1.204×10²⁴ molecules of water.