Question 72
1 pts
a 6.51-l sample of carbon monoxide is collected at 55°c and 0.816 atm. what volume will
the gas occupy at 1.05 atm and 25°c?
o 5.571
o 7.61 l
0 2.30 l
none of these
4.60 l

i do not get it   at all

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.