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What is the empirical formula of a hydrocarbon if complete combustion or 1.900 mg of the hydrocarbon produced 6.423 mg of CO2 and 1.315 mg of H2O? Be sure to write C first in the formula.
empirical formula =
What is the molecular formula if the molar mass of the hydrocarbon is found to be about 40
molecular formula =
treatment of ortho-xylene with CH3COCl and AlCl3 followed by hydrolysis gives virtually a single product(one isomer). Treatment of this product with NaOCl in base followed by acidification gives a crystalline solid. Write equations for these react..
What is the frequency of a photon emitted from a hydrogen atom when an electron makes a transition
calculate the amount of solute (g or mL needed to prepare the following solutions: a) 150 g of a 40.0%(m/m)LiBr solution. b) 450 g of a 2%(m/m) KCl solution. c) 225 mL of a 15%(v/v) isopropyl alcohol solution
Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that concentration and boiling point.
When 0.0172 mol HI is heated to 500 K in a 2 L sealed container, the resulting equilibrium mixture contains 1.9 g of HI. Calculate Kc for the decomposition reaction 2HI(g) *) H2(g) + I2(g) .
30.0 mL of 0.100-M formic acid (Ka = 1.80×10-4) is titrated with 0.100-M NaOH. What is the initial pH of the formic acid solution? What is the pH of the solution after 12.0 mL NaOH has been added?
The normal boiling point of actone is 56.2 C and the molar heat of vaporization is 32.0 kJ/mol. At what temperature will acetone boil under a pressure
hydrochloric acid to form benzoic acid, if 1.47 g of benzoic acid were formed, how many mmol of sodium benzoate would have been used?
How many moles of oxygen atoms are combined with 4.20 moles of chlorine atoms in Cl2O7?
If you remove a piece of paper with a secret message written with lemon juice from a tincture iodine bath and let it dry, what will happen over a long period of time? Explain why?
Calculate the value of Ka for the acid, Enter it in the space provided below as a number in scientific notation with 3 significant figures, Ex: 1.82E-5
What is the value of the equilibrium constant at 500 K for a chemical equilibrium that as a delta H value of 250 kj/mol and a delts S value of 48 J/mol K?
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