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ratelena [41]
3 years ago
5

How do you know when a chemical reaction has taken place?

Biology
1 answer:
eimsori [14]3 years ago
7 0

Answer: You can tell when a chemical reaction is taking place because it is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. All these things characterize what you look out for to find a chemical change.

Explanation:

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An epoch is longer than an era.

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What is the addition of mass called
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While adding we need to follow that the units of mass i.e., kilogram and gram are converted into grams before addition and then follow the simple addition process. We can add two or more units of mass given in kilogram and grams like ordinary numbers. Always express grams as 3-digit numbers for example 3 g = 003 g.

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Suppose Gene 1 produces a protein involved in the development of the eye. In the simulation, what are two ways that you can prev
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Answer and Explanation:

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3 0
3 years ago
At which temperature would air hold the least water vapor?
sasho [114]

Answer: I believe it's 60 degrees Fahrenheit or less, Since heat is required to have proper evaporation, then this will only be leading to a portion of the water condensed leading to a half condensation

Explanation:

7 0
3 years ago
Which of the following is the most direct evidence for evolution?
Alex_Xolod [135]

Answer:

D. Fossil record.

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3 years ago
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