A fossil coal containing 80% C, 8% H2, 2% O2, 1% S, 2% N2, 3% H2O and 4% ash, burns with 60% excess O2. Details: H-1, C-12, N-14, O-16, S-32
MAR = 28.84 g / mol
R = 62.3 mmHg. L / mol / K

Questions:
a) The mass of air fed.
b) The volume of air fed at 27°C and 720 mmHg.
c) The mass of smoke.
d) The volume of fumes on a wet basis, measured at 120 ° C and 720 mmHg.
e) The probable ORSAT analysis of the fumes.
f) The BM by weight of the combustion.

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml

May someone me with these science questions