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What is the sum of the stoichiometric coefficients the formation reaction for methanol (CH3OH)? Enter any fraction as a decimal.
The heats of reaction for the following combustion reactions were determined experimentally
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.
What is the maximum amount of solid NaCl will dissolve in 1 liter of a 1 M solution with a 1:1 ration of MgCl2 and CaCl2
The student then titrated 25.0 ml of the same buffer with 0.1115 M NaOH. The observed titration curve is shown below
if your spectrophotometer can measure absorbance up to 1.5, what is the max concentration of nadh that your can measure
A quantity of 7.48g of a compound is dissolved in water to make 300 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27 Celsius. Calculate the molecular weight of the compound.
The concentration of the HCl solution is 0.1016 M HCl. What volume of 0.1338 M Ba(OH)2 would neutralize 50.00 mL of the HCl solution standardized in the situation above.
Using a biuret assay, the following set of data has been obtained. Using a graph, determine how much protein is in your sample. Sample 0 mg albumin 10 mg albumin 25 mg albumin 50 mg albumin 75 mg albumin 100 mg albumin Unknown Absorbance 540 nm 0...
A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 ?C.What pressure will the sample exert when it is compressed to 250 mL and cooled to -25 ?C?
How many grams of glucose (C6H12O6) must be dissolved in 563 gram of ethanol (C2H5OH) to prepare a 2.40 x 10-2 m solution?
The iridium is plated out from the solution onto a boron doped diamond electrode at constant potential. The initial mass of the electrode before plating was 7.4938 g
Given that the partition coefficient for a solute is K in a water-ether solvent extraction system, is it more effective to do one extraction with V mL of ether or three extractions with V/3 mL of ether
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