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Today at 12:12 AM
Chemistry

Answered

which is not true for combustion reactions?
a. they always occur in the presence of oxygen
b. they produce carbon dioxide and water
c. they usually require a lot of energy to form products
d. a candle burning is an example of one

Answer :

Аноним Аноним

Today at 12:17 AM

Answer:

They usually require a lot of energy to form products

Explanation:

Energy may not be reasonable source.
Oxygen and hydrocarbon is enough to produce the products .

Petroleum products, Carbon and hydrocarbons are also necessary

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