If the temperature of a 50mL sample of a gas is changed from 200K to 400K under constant pressure, what is the new volume of gas?

The new volume is 100mL

Explanation:

From the question given, we obtained the following information:

V1 = 50mL

T1 = 200K

T2 = 400K

V2 =?

V1 /T1 = V2 /T2

50/200 = V2 /400

Cross multiply to express in linear form

200 x V2 = 50 x 400

Divide both side by 200

V2 = (50 x 400) /200

V2 = 100mL

The new volume is 100mL

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.