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You have 0.554g sample that is a mixture of oxalic acid, H2C2O4 and another solid that does not react with sodium hydroxide. If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point, what is the weight percent of oxalic acid in the mixture? Oxalic acid and NaOH react according to the equation H2C2O4 (aq) + 2 NaOH(aq)--->NaC2O4(aq) + 2 H2O (l)
Nicotine, a component of tobacco, is composed of C, H, and N. A 12.075 mg sample of nicotine was combusted, producing 32.757 mg of CO2 and 9.391 mg of H2O. What is the empirical formula for nicotine?
Calculate the freezing point of a solution of 23.4 grams of benzoic acid (C6H5CO2H) dissolved in 613 grams
choose the correct answer for the atom using the periodic chart. Larger atomic or ionic radius, F or F(-)
The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the empty calorimeter is 0.10 kJ/°C. How much heat is released per gram of oil shale when it is burned?
This converts the nitrogen in the protein to ammonia. The NH3 that formed was distilled and collected into flask containing 50.00mL of .09552 M HCL. The resulting solution was then back titrated, requiring 37.84 mL of 0.05992 M NaOH to reach the p..
Calculate the mass of water produced when 9.11 g of butane reacts with excess oxygen. Express the mass of water numerically in grams.
The sucrose is being converted to other sugars in a reaction which is first-order with respect to the sucrose concentration. Exactly 30 minutes later, the sucrose concentration has fallen to 0.131 mol/L. Calculate the value of the rate constant in..
Find the normal boiling point of a saturated solution of LiF at 100C, assuming it undergoes complete dissociation. The solubility of LiF is 230 mg/100 g of water at 100C
Determine K for the reaction, H2C6H7O6(aq) + 2OH-(aq) = C6H7O6 2-(aq)+ 2H2O(l) given that H2C6H7O6 ka1=8E-5 and Ka2=1.2E-12
How much heat is released to the surroundings when 1.5 moles of water cools from 150 to 20 at 1 atm? Note that the constant pressure heat capacities, , for water in vapor and liquid form are 36.4 and 75.3 respectively.
This aqueous mixture then reacts with excess aqueous lead (II) nitrate to form 21.75g of solid. Determine the mass percent of sodium chloride in the original mixture?
First Ionization Energies across a period, e.g., period 2. explain in detail why there are anomalies for Boron and Oxygen. Explain the subshell hybridization of elements such as copper or chromium
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