1. A sample of oxygen gas is contained in a piston with a freely moving cylinder. At 2°C the volume of the gas is 575 ml. To what temperature in °C must the gas be heated
to occupy a volume of 987 mL?
can you show the work for the problem

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

the answer is c

tell me if wrong

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.