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sertanlavr [38]
3 years ago
14

Which metal is the most reactive with water? A. AI B. Cu C. Fe D. K

Chemistry
1 answer:
Zolol [24]3 years ago
4 0

the answer would be d!! hope this helps

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5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure<br> water?
Margaret [11]

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

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

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Three blocks of metal at the same temperature are placed on a hot stove. Their specific heat capacities are listed below.Rank th
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Answer:

Copper>Steel>Aluminium

Explanation:

Hello,

Since the heat capacity accounts for the required heat to increase by 1°C, 1 kg of the metal, copper is the one that has the lower heat capacity, it means that it requires the least amount of energy to warm up (increase its temperature), this could be substantiated via the mathematical definition of heat capacity:

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Best regards.

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