N=m/M
= 241 g /159.69 mol/g
=1.50917
Answer:
64
Explanation:
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A thermochemical reaction is a chemical reaction with an additional information of the heat of reaction. For example, this is the thermochemical reaction for the combustion of hydrogen gas:
H₂ (g) + 1/2 O₂ (g) → H₂O (l) ΔH = -285.8 kJ
The coefficient 1/2 represents the number of moles of O₂ needed to combust 1 mole of H₂ gas in order to yield one mole of water.
1/2 N2 + 3/2 H2 -> NH3 : dH = -46.1 kJ/mol
1/2 N2 + 1/2 O2 -> NO : dH = +91.3 kJ/mol
H2 + 1/2 O2 -> H2O : : dH = -241.8 kJ/mol
The equation for the oxidation of ammonia to nitric oxide is
4 NH3 + 5 O2 -> 4 NO + 6 H2O
The heat of reaction is:
- 4 x -46.9 + 4 x 91.3 - 6 x 241.8 = -809kj