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skad [1K]
3 years ago
7

Some chemical reactions absorb energy rather than release it. Which of these phenomena are caused by chemical reactions that abs

orb energy? If you're not sure, make a guess
Chemistry
1 answer:
Romashka [77]3 years ago
3 0

A chemical reaction absorbs energy which means it is endothermic reaction.

The reaction is endothermic if the energy of products is more than the energy of reactants.

The energy of products is more means that the bond energy of products is more than the bond energy of reactants.

so breaking of bond needs energy which is greater than the energy released in making of new bonds.

Enthalpy of reaction = Bond energy of reactants - Bond energy of products.

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Answer:

1.88 x 10^5

Explanation:

You have to round because all of the numbers in 187515.4207 are significant

Round to: 188000

Put in scientific notation:

1.88 x 10^5

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Endler's Guppies Experiment on Natural Selection
Morgarella [4.7K]

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<h3>What is the scientific method?</h3>

The scientific method is a series of step used to validate evidence and thus formulate theories.

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The scientific method involves making a question, providing an explanation of the hypothesis, making observations/experiments (which include experimental and control groups), and drawing conclusions.

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The strength of the conclusions can be enhanced by using supporting evidence from other research fields (in this case, for example, the fossil record).

In conclusion, an experiment on Natural Selection includes mechanisms (question), explanation (hypothesis), estimation of the frequency of the trait in the population (prediction) and comparisons (control group).

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