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Oxana [17]
4 years ago
9

Given the information shown in process "B", calculate the molar enthalphy of fusion for ice

Chemistry
1 answer:
Nikolay [14]4 years ago
6 0

Answer:

D) 6.02 kJ/mol

Explanation:

Hello,

In this case, since 200kJ melted 1.5 kg of ice (2.0kg-0.5kg), we can compute the melted moles:

n=\frac{1.5kg}{18kg/kmol} *\frac{1000mol}{1kmol}=83.33mol

Then, we compute the molar enthalpy of fusion by diving the melted moles to the applied heat:

\Delta H_{fusion}=\frac{500kJ}{83.33mol}\\ \\\Delta H_{fusion}=6.02kJ/mol

Hence answer is D) 6.02 kJ/mol.

Best regards.

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In subtractive color mixing, like with ink on paper, when all three primary colors are combined the result is?
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5 0
1 year ago
What is the molarity of a solution which has a volume of 3 litres and contains 5.1 moles of Br2?
katrin [286]

Answer:

The molarity of the solution is 1.7 \frac{moles}{liter}.

Explanation:

Molarity (M) or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

Molarity=\frac{moles of solute}{volume of the solute}

Molarity is expressed in units \frac{moles}{liter}.

In this case, you know:

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Replacing:

Molarity=\frac{5.1 moles}{3 L}

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Molarity= 1.7 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.7 </em></u>\frac{moles}{liter}<u><em>.</em></u>

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