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geniusboy [140]
3 years ago
15

Which term describes a change that occurs with no new substances being formed?

Chemistry
1 answer:
Elina [12.6K]3 years ago
8 0

C. physical change

Explanation:

That's the answer

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Find the empirical and the molecular formula of acetylene gas composed of 92.26 percent carbon and 7.74 percent hydrogen
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Answer:

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Explanation:

92.26% = 92.26 g

7.74% = 7.74 g

carbon is 92.26 x 1 mole/12.011 = 7.68

hydrogen is 7.74 x 1 mole/1.008 = 7.68

carbon 7.68 ÷ hydrogen 7.68 = 1

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