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Titanium (IV) and vanadium (V) form colored complexes when treated with hydrogen peroxide in 1M sulfuric acid. The titanium complex has an absorption maximum at 415nm, and the vanadium complex has an absorption maximum at 455nm. A 1.00x10-3M solution of the titanium complex exhibits an absorbance of 0.805 at 415nm and 0.465 at 455nm, while a 1.00x10-2M solution of the vanadium complex exhibits absorbances of 0.400 and 0.600 at 415nm and 455nm, respectively. A 1.0000g sample of an alloy containing titanium and vanadium was dissolved, treated with excess hydrogen peroxide, and diluted to a final volume of 100.0mL. The absorbance of the solution was 0.685 at 415nm and 0.513 at 455nm. What were the percentages of titanium and vanadium in the alloy?
What is the enthalpy of combustion of this fuel in kJ/mol? The specific heat capacity of water is 4.184 J/g-°C.
1.664 g of a solid white acid are dissolved in water and completely neutralized by the addition of 45.37 mL of 0.580 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
How much heat is needed to vaporize 2.42 g of liquid oxygen if the molar heat of vaporization for oxygen is 1,629 cal/mole?
The Cl2 removed occupies a 10.0 L container at .500 atm at 25C. How many g of Ne are present in the original container?
When 20 mL of a 315 mL stock solution containing 2.2 M AlCl3 is diluted to 81 mL, what is the concentration of Al3+ in the new solution.
When 5.00g of copper reacts with oxygen, the copper oxide product has a mass of 5.62g. What is the empirical formula of this copper oxide? MM Cu= 63.5, O= 16.0
determine How many grams of AlCl 3 are formed if 30.0 grams of Hydrogen are produced? It is given that the molar mass of AlCl 3 =133.33 g/mol.
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
Calculate the mole fraction of toluene in the solution that contains 48.0 g toluene and 139 g benzene.
what is the pH of a solution of 125ml of 3.5 M of CH3COOH and 25ml of 1.25 M of NaOH ?
Comment of the effectiveness of targeted prodrugs such as Xeloda for specific cancers such as liver tumors, as well as their effectiveness as a broad "cure for cancer
Examine the label of any vegetable oils, solid shortening, margarine, or butter you might have on hand. Identify the oil or fat and report the level of saturated, mono-unsaturated
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