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An unknown monoprotic weak acid, HA, has a molar mass of 55.0. A solution contains 2.50 g of HA dissolved 800. mL of solution. The solution has a pH of 2.000. What is the value of Ka for HA?
dimethylhydrazine ch32nnh2 was used as a fuel for the apollo lunar descent module with n2o4 being used as the oxidant.
After carrying out the reaction, why does a precipitate (solid) form when you pour the reaction mixture on ice
when solid copper is added to nitric acid copperii nitrate nitrogen dioxide and water are produced. write the balanced
By how much is the oxidizing power of MnO4-/Mn2 couple decreased if the H concentration is deceased
Propose a structure for a compound A that has an infrared absorption at 1820 cm-1 and a single proton NMR absorption at ? 1.5. Compound A reacts with water to give dimethylmalonic acid and with methanol to give the monomethyl ester of the same aci..
the molar heat of vaporization of acetic acid hc2h3o2 is 24.3 kj mol-1 at its boiling point. how many kilojoules of
A titration is performed to determine the amount of sulfuric acid, H2SO4, in a 12.00 mL sample taken from car battery. About 50 mL of water is added to the sample, and then it is titrated with 48.62 mL of a standard 0.6403 M NaOH solution
At this temperature, calculate the number of moles of NO2(g) that must be added to 3.12 mol of SO2(g) in order to form 1.30 mol of SO3(g) at equilibrium.
A 72.0 mL volume of 0.25 Moles HBr is titrated with 0.50 Moles KOH. Calculate the pH after addition of 36.0 mL of KOH
What are the concentrations of H2SO4 and H2SO3 in a 25ml solution titrated with .1M NaOH. The first endpoint is reached after 37.89ml of NaOH are added (pH=7) and the second endpoint is reached after 43.57ml of NaOH are added (pH=9.8).
Generate the equilibrium constant expressions for the following reaction. Calculate the numerical value for
the vapor pressure of chlorine dioxide clo2 nbsp is 155 torr at -22.75nbsp ? c and 485 torr atnbsp 0 ? c. what is the
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