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Scilla [17]
3 years ago
8

When a physical change in a sample occurs, which of the following does NOT change?

Chemistry
2 answers:
Vanyuwa [196]3 years ago
8 0
I think thee correct answer from the choices listed above is option D. <span>When a physical change in a sample occurs, composition of the sample does not change. It stays the same. Also, the properties of the sample will still be the same. Hope this answers the question.</span>
Lunna [17]3 years ago
5 0
D. Composition does not change during a physical change.
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Answer:

single bond= 1 sigma bond

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Explanation:

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3 years ago
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stiv31 [10]

Answer: acetone is a ketone and not an aldehyde. Therefore it's false

Explanation:

Acetone is of structure CH3-CO-CH3

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Both aldehyde and ketone have a carbonyl group but there is difference between aldehyde and ketone.

Aldehydes have a general formula R-CHO

where R is a methyl group including H atom, and CHO is the functional group.

While

Ketone have the general formula R-CO-Ri

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Hint: ketones usually end with the suffix "one" as in acetone.

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3 years ago
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jasenka [17]
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3 years ago
What is the mass of 3.04×10^-4 mol of baking soda, NaHCO3?​
Zigmanuir [339]

Answer:

0.025536g

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no. of mole = mass/Mr

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Among the gases listed, which would have the fastest rate of effusion?
Delvig [45]
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3 0
3 years ago
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