Burning wood in a fireplace is an example of what kind of energy conversion?
2 answers:
Answer:
Chemical potential energy converting to heat energy.
Explanation:
Burning of wood in a fire place or burning of any other compound in presence of oxygen involves combustion. During combustion there is breaking and making of bonds as combustion is a chemical reaction.
For example:
Combustion of carbon gives carbon dixoide:
Combustion is an exothermic reaction, it releases large amount of energy.
Thus in all we are converting the chemical energy of a substance to heat energy during combustion.
Hence combustion involves Chemical potential energy converting to heat energy.
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Answer:
<h2>0.93 g/mL</h2>Explanation:
The density of a substance can be found by using the formula
From the question
mass = 37.2 g
volume = 40 mL
We have
We have the final answer as
<h3>0.93 g/mL</h3>Hope this helps you
Answer:
A gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure of 32.5 kPa.
<u>The pressure for oxygen is 3 kPa</u>
Explanation:
According to Dalton's Law of Partial Pressure total exerted by the mixture of non-reacting gases is equal to sum of the partial pressure of each gas.
So,
For , a gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure:
Insert the values in :