The enthalpy of solution for LiBr is - 48.8 kJ/mol. Suppose 5.0 g of LiBr is dissolved in 50.0 g of water. The initial temperature of the water is 20.0 °C. What is the final temperature of the water? The specific heat of water is 4.184
J/(9*°C).
Select one:
a. 6.6 °C
b. 33.4 °C
c. 32.2 °C
d. 7.8 °C

answer; economic order quantity;

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.