The reaction of 56 gram of iron in the laboratory produces 14.1 grams of iron. What is the theorical amount of Fe moles produce
1 answer:
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Answer:
44,901 kilo Joule heat is released when grams of ammonia is produced.
Explanation:
Moles of ammonia gas produced :
According to reaction, when 2 moles of ammonia are produced 9.18 kilo joules of energy is also released.
So, When 978.235 moles of ammonia gas is produced the energy released will be:
(negative sign indicates that energy is released as heat)
44,901 kilo Joule heat is released when grams of ammonia is produced.
Answer:
A) 0.831 M
B) 1.07 m
C) 26.2%
D) 0.0189
Explanation:
A) First we convert the mass of Pb(NO₃)₂ to moles:
- 275 g ÷ 331 g/mol = 0.831 mol Pb(NO₃)₂
Then we divide it by the total volume (1.00 L) to calculate the molarity:
- 0.831 mol / 1.00 L = 0.831 M
B) We convert the grams of water to kilograms:
- 775 g / 1000 = 0.775 kg
Then we divide the Pb(NO₃)₂ by the kilograms of water:
- 0.831 mol / 0.775 kg = 1.07 m
C) We divide the mass of Pb(NO₃)₂ by the total mass of the solution:
*100%
* 100% = 26.2%
D) We calculate the moles of water:
- 775 g H₂O ÷ 18g/mol = 43.1 mol H₂O
Then we divide the Pb(NO₃)₂ moles by the total number of moles:
= 0.0189