How much heat energy is required to convert 49.4 g of solid ethanol at − 114.5 ° c to gasesous ethanol at 140.7 ° c ? the molar heat of fusion of ethanol is 4.60 kj/mol , and its molar heat of vaporization is 38.56 kj/mol . ethanol has a normal melting point of − 114.5 ° c and a normal boiling point of 78.4 ° c . the specific heat capacity of liquid ethanol is 2.45 j / g ⋅ ° c , and that of gaseous ethanol is 1.43 j / g ⋅ ° c .

Explanation:

mass of ethanol (s)

molar specific heat of fusion

molar specific heat of vaporization

specific heat of liquid

specific heat of gas

no of moles of ethanol

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

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