What is the molecular formula of a hydrocarbon containing 84.6% carbon by mass with a molar mass of 142.3g/mol?

a)c20h44
b)c11h10
c)c10h22
d)c5h11

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2