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Substance D has the following properties:

ΔHvap = 34.6 kJ/mol

ΔHfus = 6.3 kJ/mol

Tb = 87.9 °C

Tm = -30.9 °C

Specific Heat (solid) = 4.9 J/g·°C

Specific Heat (liquid) = 2.4 J/g·°C

Specific Heat (gas) = 1.5 J/g·°C

Calculate the energy that must be removed to convert 221.6 g of substance D from a gas at 120.9 °C to a solid at -61.9°C. The molar mass of Substance D is 75 g/mol. Enter your response to the nearest kJ

Sagot :

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