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
You might be interested in
Answer:
Energy,
Explanation:
It is required to find the energy of an electromagnetic wave with a frequency of . The energy of a wave in terms of its frequency is given by :
= frequency of em wave
So, the energy of an electromagnetic wave is