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zvonat [6]
3 years ago
13

Give the characteristics of a strong acid.

Chemistry
1 answer:
Novosadov [1.4K]3 years ago
4 0
The correct answer is d
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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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Answer:

\boxed {\boxed {\sf 2.8 \ m }}

Explanation:

The formula for molality is:

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}

Divide.

m= 2.8 \ mol/kg= 2.8 \ m

The molality is <u>2.8 moles per kilogram</u>

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