A 100-g sample of acetic acid is heated from 4°C until it melts at 16.7°C. The liquid is further heated until it reaches 30°C. Heating was done under an atmospheric fume hood. Calculate the heat required to perform such transformation. The latent heat of fusion of acetic acid is 46.68 cal/g. The specific heat capacity of solid acetic acid varies with temperature and is given by Cp(s) = 0.330 + 0.0080T, where T is in °C and Cps) is in cal/g-°C. The specific heat capacity of liquid acetic acid is given by Cp() 320.8T + 0.8985T², where T is in Kelvins and Cp() is in J/kmol-K. = 139640 –

Number 1A food product containing 80% moisture content is being frozen. Estimate the specific heat of the product at -6°C when 82% of the water is frozen. The specific heat of the dry product is 2.5 kJ/(kg°C). It is assumed that the specific heat of water at -10°C is the same as the specific heat of water at 0°C, and that the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. identify :a. Cp frozen product = Answer in kJ/kg°C

Number 1A food product containing 82% moisture content is being frozen. Estimate the specific heat of the product at -8°C when 82% of the water is frozen. The specific heat of the dry product is 2,5 kJ/(kg°C). It is assumed that the specific heat of water at -10°C is the same as the specific heat of water at 0°C, and that the specific heat of ice follows the function Cp es = 0.0062 Tbeku + 2.0649. identify :a. Cp frozen product = Answer in kJ/kg°C