Most chemical reactions involve the evolution or absorption of heat energy. True or False

Chemistry

1 answer:

sergejj [24]3 years ago

7 0

Answer:

True

Explanation:

The majority of the reactions happened with a flow of heat. When there's no heat, the reaction is adiabatic.

For no adiabatic reactions, the heat can be released (evolution) by the system, so the reaction will be exothermic, or absorbed by the system (absorption), then the reaction is called endothermic.

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A trophic level is a number that tells you the position an organism occupies in a food chain or food pyramid.

svet-max [94.6K]

Answer:

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Explanation:

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3 years ago

2NH.

liq [111]

Answer:

N=2

H=6

Explanation:

1.Balance a chemical equation in terms of moles.

2.Use the balanced equation to construct conversion factors in terms of moles.

3.Calculate moles of one substance from moles of another substance using a balanced chemical equation.

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(P.s it could also be where you have to solve it in which you have to simplify it first then solve it.) like adding them all up.

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steposvetlana [31]

Answer:

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Explanation:

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