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Semenov [28]
2 years ago
12

What could have caused the mass to be higher than the initial mass​

Chemistry
2 answers:
ivann1987 [24]2 years ago
6 0

Answer:

Possibly the addition of oxygen from the atmosphere

Explanation:

Amanda [17]2 years ago
6 0
The oxygen comes from the atmosphere
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The <u>Mole</u> is the SI unit that expresses the amount of substance.

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brainly.com/question/28498715

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