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Tju [1.3M]
3 years ago
14

What mass of water absorbs 6700 J of heat to raise the temperature from 283K to 318K?​

Chemistry
1 answer:
larisa86 [58]3 years ago
4 0

Answer:

you did not give the specific heat like formula like it takes 1kj to raise 28grams of water by 10 grams

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How do you do empirical formula
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A 7.27-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this solution is 1.02°C below that
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The correct answer is 146 g/mol

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The molality of a solution is defined as the moles of solute per kg of solvent. Thus, we can multiply the molality by the mass of solvent in kg (250 g= 0.25 kg) to obtain the moles of solute:

0.199 mol/kg benzene x 0.25 kg = 0.0498 moles solute

There are 0.0498 moles of solute dissolved in the solution. To calculate the molar mass of the solute, we divide the mass (7.27 g) into the moles:

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3 years ago
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i have the same test

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