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1. Combustion of 5.23 mg of phenol yields 14.67 mg CO2 and 3.01 mg H2O. Phenol contains C, H, and O. What is the percentage of each element in this substance? What is the empirical formula?
2. An oxide of osmium is a pale yellow solid. If 2.86g of the compound contains 2.16g of osmium what is the empirical formula?
Draw the corrct structure(s) for 2-chloro-2,3-dimethylpentane. Show stereochemistry clearly. Explicitly draw all four groups,
a 10 ml sample of an unknown aqueous nickel 2 solution was treated and found to produce 0.0532g of nidmg2 precipitate.
Approximate the p binding energy for benzene the benzene cation, also the benzene anion. Must be in terms of a and ß.
aluminum and oxygen react to form aluminum oxide. How many L of oxygen at 296K and 1.4 atm of pressure are necessary to form 3.25g of aluminum oxide.
elemental sulphur occurs in the solid state as 8-membered rings arranged in rhombohedral crystal structure s8 which
Determine the mole fraction of sodium chloride(NaCl) in the solution if this solution is formed by mixing 17.0 grams of sodium chloride NaCl in 85.0 grams of Water?
Calcium carbonate decomposes with heat to give calcium oxide and carbon dioxide gas. If 2 mols of CaCO3 decompose, how many Liters of CO2 gas are produced at 1 atm and 0 degrees Celsius
What is the mass of a glucose solution that fills a 0.500 intravenous bottle if the density of the glucose solution is 1.15 ?
benzoic acid is a white crystalline powder used as a foodpreservative. the compound contains 5.0 hydrogen 26.2 oxygen
Consider the reaction NO + O3 → NO2 + O2 Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1
At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 1.4 g H2O and 2.3 g Cl2O are mixed in a 1.4-L flask. HOCl Cl2O H2O (b) 1.0 mo..
a weak acid hf is in solution with dissolved sodium fluoride naf. if hcl is added which ion will react with the extra
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