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IRINA_888 [86]
3 years ago
15

Which of the following best describes a physical change?*

Chemistry
2 answers:
Dennis_Churaev [7]3 years ago
5 0

Answer:

D

Explanation:

i had this question and i got it right

KATRIN_1 [288]3 years ago
4 0

Answer:

d

Explanation:

I took this test way back

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5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure<br> water?
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\boxed {\boxed {\sf 2.8 \ m }}

Explanation:

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m=\frac{moles \ of \ solute}{kg \ of \ solvent}

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moles= 0.210 \ mol \\kilograms = 0.075 \ kg

Substitute the values into the formula.

m= \frac{ 0.210 \ mol }{0.075 \ kg}

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