Combustion of hydrogen releases 142 j/g of hydrogen reacted. How many kj of energy are released by the combustion of 16.0 oz of
hydrogen? (1 lb = 16 oz; 1 kg = 2.2 lb)
2 answers:
64.61 kJ of energy is released by the combustion of 16.0 oz of hydrogen
<h3>Further explanation</h3>Delta H reaction (ΔH) is the amount of heat/heat change between the system and its environment
(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)
The reaction of a substance with oxygen is called a combustion reaction
the combustion of hydrogen is
<h3>2H₂ + O₂ → 2H₂O.</h3>This equation shows that 2 Hydrogen molecules react with 1 molecule of oxygen to produce 2 molecules of water
In this combustion reaction will produce large thermal energy because it involves breaking the hydrogen gas bond, so the reaction is exothermic
The combustion of hydrogen releases 142 j / g of hydrogen reacted.
Combustion of 16.0 oz of hydrogen will release heat of:
16 oz = 1 lb = 0.455 kg = 455 g
For each gram Hydrogen releases 142 J, then for 455 g releases:
142 x 455 J = 64610 J = 64.61 kJ
<h3>Learn more</h3>the complete combustion of methane
grams of o2 are required to burn 17.0 gal of c8h18
moles of oxygen are required to produce 2.33 moles of water
Keywords: Combustion of hydrogen, ΔH reaction, water, oxygen, exothermic
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Answer:- 6984 kJ of heat is produced.
Solution:- From given information, 1367 kJ of heat is produced by the combustion of 1 mole of ethanol. We are asked to calculate the heat produced by the combustion of 235.0 g of ethanol.
Let's convert given grams to moles and multiply by the heat produced by one mole of ethanol to get the total heat produced. Molar mass of ethanol is 46 grams per mole. The set will be:
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