Calculate energy associated with the cooling of 15.3 g of steam from 125.0°C cools to 100.0 °C. Use the constants provided: A Hvap, Enthalpy of vaporizītion of liquid water is 40.67 kJ/mol; Enthalpy of fusion for ice, A Htus = 6.02 kJ/mol; specific heat
capacity for water 4.184 J/g °C), and specific heat capacity for vapor 1.87 J/g °C).

c (diamond),

sio2 (quartz)

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.