In an air-carbon dioxide mixture in a tube of diameter 10 cm at 298 K and 202.6 kPa, the partial pressure of CO2 at two planes 3 mm apart are 30.4 and 50.6 KPa respectively. The diffusivity of CO2 in air at 298 K and 202.6 kPa is 8.2*10 m 2 /s Calculate the rate of transfer of CO2 across the two planes, assuming: a. Equimolecular counter diffusion. b. Diffusion of CO2 through a stagnant air layer. c. In case 4a) what is the diffusion of coin moles per minute. 4+4+21

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

it is the most commonly accepted one

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.