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A student did an alkalinity determination correctly, except that the sample titrated has a volume of 90.0 mL Volume A was found to be 4.50mL and volume B was 7.00 mL
a) calculate the alkalinity value from these data and the calculate the correct value
The labeling of acetone with 18O is catalyzed by both acid and base. Show Mechanisms for both reactions.
Derive explicitly equations for number and weight average molecular weight in a linear polycondensation reaction of A-B type monomers.
Calculate the pH of 3.0*10^-8 M HCl and what fraction of the total H+ in this solution is from HCl. Include two digits after decimal point.
A cylinder contains 28.5L of oxygen gas at a pressure of 1.8 atm and a temperature of 298k. How much gas (in moles) is in the cylinder
what will be the final temperature of the system when thermal equilibrium is attained
What is the maximum number of moles of NH4V3O8 that can be prepared starting from 2.5 moles each of N2 and H2. Assume all other reactants are not limiting reagents.
Find the molcular heat capacity in units. Does the law hold up? Can you distinguish a metallic element from a nonmetal this way. Metalloids
Construct a Beer†TM s Law plot and determine concentration of a solution X. When a 1 ml sample of solution X was combined with 4 mL of distilled water it had an Absorbance of 0.19.
a calorimeter contains 25.0 of water at 14.0. when 1.80 of a substance with a molar mass of 82.0 is added it dissolves
What advantages and disadvantages exist for both organic and inorganic solar cells? Describe the main barriers or technical difficulties associated with each.
A sample of nitrogen gas at a pressure of 698 mm Hg and a temperature of 86oC, occupies a volume of 14.4 liters. If the gas is heated at constant pressure to a temperature of 116 oC, what the volume of the gas sample will be in L.
Radio waves are very low energy forms of electrmagnetic radiation. What is the energy of a mole of radio wave photons with a
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