Aand b react together in this reversible reaction. a + 3b --> c + 2d. a mixture of 10 mol of a and 10 mol of b were left to reach equilibrium. the equilibrium mixture contained 4 mol of b. what is the total amount, in moles, of substances in the equilibrium mixture?

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

elements make up everything, and they combine to make compounds.

the answer is c

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.