What volume will 2.00 moles of nitrogen occupy at 720 torr and 20C?

50.62L

Explanation:

1torr= 0.00132atm

P=720torr = 0.95atm

V= 20°C= 20+273= 293K

PV=nRT

R=0.08206L-atm/mol-K

0.95×V= 2×0.08206×293

V= 2×0.08206×293/ 0.95

V= 50.62L

i belive it is water

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.