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murzikaleks [220]
3 years ago
8

Which of the following represents a chemical change?

Chemistry
1 answer:
Snezhnost [94]3 years ago
3 0
The answer is B.) Freezing of water
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Consider the following equation. 2H2(g) + O2(g) 2H2O(g); ΔH is negative. Which statement is true? The reaction is endothermic fr
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Answer is: Increased pressure would increase the rate of forming water vapor.

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2) increase concentration of reactants (oxygen and hydrogen).

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Which of the following statements best describes a difference between mechanical waves and electromagnetic waves?
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Answer:

See Explanation

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c

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