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A first-order reaction has a half-life of 26.4 seconds. How long will it take for the concentration of the reactant in the reaction to fall to fall to one-eighth of its initial value?
Write the reaction for the hydrolysis of propionyl propionate (an ester) -- that is, the reaction of this ester with water, yielding a carboxylic acid and an alcohol.
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive?
A solution of ethanol (C2H5OH) in water is prepared by dissolving 87.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
A sample of nitrogen gas at 298 K and 0.980 atm has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 1.176 atm at constant temperature
Distinguish between which are aromatic compound given multiple structures, How can you tell the difference between which set of given compound structures would have highest resonance energy
at room temperature more of the collisions have sufficient energy to produce a reaction. the piece of zinc needs to be bigger at 4 deg c.
Calculate the electron affinity in kJ/mol for X in the hypothetical ionic compound MX from the information given below.
What would be the volume of product gases (CO2 and H2O) at STP from 0.50 mole cyclohexanone (in presence of excess oxygen)
Suppose four weighings of a crcucible were found to be 10.231 g, 10.278 g, 10.256 g, and 10.363. Obtain the average (mean) weight of the crucible
Calculate(a) the molar concentration of the ammonia and (b) the mass/mass % concentration of ammonia (17.04g/mol). given a solution density of 0.990 g/mL, HCI (aq) + NH3(aq) -right arrow NH4Cl(aq)
what is the coefficient for carbon dioxide when the following equation showing the combustion of isopropyl alcohol
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