The oxygen transmission rate through a 2.54 x 10^-3 cm thick low density polyethylene film
with air on one side and inert gas on the other side is 3.5 x 10^-6 mL cm^-2s^-1.
Oxygen partial pressure difference across the film is 0.21 atm. The permeability coefficient of the film to
oxygen is _______ x 10^-11 mL (STP) cm cm^-2 s^-1 (cm Hg)^-1

Ambient air at 30^◦C dry bulb temperature and 80% relative humidity was heated to a dry
bulb temperature of 80^◦C in a heat exchanger by indirect heating. The amount of moisture
gain (g kg^-1 dry air) during the process would be _______.

For an enzyme catalyzed reaction S ----> P , the kinetic parameters are:
[S] = 40 μM, V₀ = 9.6 μM s^-1 and V_max = 12.0 μM s^-1.
The K_m of the enzyme in μM will be _______.(up to one decimal points)

A microbial sample taken at 10 AM contained 1x10⁵ CFU/mL. The count reached to
1x10¹⁰ CFU/mL at 8 PM of the same day. The growth rate (h^-1) of the microorganism
would be _______.(up to two decimal points)

The rate of heat transfer per unit area from a metal plate is 1000 W m^-2. The surface
temperature of the plate is 120^◦C and ambient temperature is 20^◦C. The convective heat
transfer coefficient (W m^-2 ◦C ^-1) using the Newton’s law of cooling will be _______.