Calculate the mass of butane, combusted at 400°C, necessary to completely vaporize a 20kg block of ice at atmospheric pressure. Assume that the ice is initially at 0°C and no vaporization occurs due...

Extracted text: Calculate the mass of butane, combusted at 400°C, necessary to completely vaporize a 20kg block of ice at atmospheric pressure. Assume that the ice is initially at 0°C and no vaporization occurs due to sublimation. Take the specific latent heat of fusion of ice to be 3.36 × 105 J/kg and the Cp of water to be constant equal to its value at 100°C.