5. An organic compound has the following composition by mass. 9 60.0% C, 8.0% H and 32.0% 0.
If 0.1 g of this compound is neutralized with exactly 10.0 cm of 0.05 mol dm m NaOH in a
reaction with 1: 1 stoichiometry,
(a) deduce the empirical formula of the compounds with the law of nultiple
(b) what is the molecular formula of the compound

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

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.