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ch4aika [34]
3 years ago
9

Select all the correct answers.

Chemistry
1 answer:
OlgaM077 [116]3 years ago
7 0

Answer:

It's The amount of matter within the system remains the same and The cycle has a well-defined starting and stopping point.

Explanation:

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what is the correct electron configuration for an element with five electrons in the third energy level
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