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Formic acid, HFor, has a Ka value equal to about 1.8 * 10^(-4). A student is asked to prepare a buffer having a pH of 3.60 from a 0.10 M HFor and a 0.10M NaFor solution. How many milliliters of the NaFor solution should she add to 20 ml of the 0.10 M HFor to make the buffer?
100g of orange juice is said to contain about 50mg of ascorbic acid. How much of a 2E-4M DCPIP titrant should be required to titate a 100g sample. What would be a good sample size.
in the addition of hbr to isobutylene shown below there are two possible products.a. this reaction is the markovnikov
What is the concentration (M) of a compound with an absorbance of 0.55 and an extinction coefficient of 3.5 M-1cm-1 with a path length of 1cm
What is the ratio of the number of electrons for each atom of lead over one atom of aluminum
A sample of krypton gas at a pressure of 0.621 atm and a temperature of 20.7oC, occupies a volume of 17.2 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be
One of the first steps in the enrichment of uranium for use in nuclear power plants involves a displacement reaction between and aqueous HF.
General Chemistry: Energy, Volume, Mass, Molarity, and Moles, Benzene is an organic solvent with the formula C6H6. It boils at 80.1 degrees celcius and melts at 5.5 degrees Celsius. Benzene's density is 0.88gm/ml; its heat of vaporization is 30.0 ..
calculate the mass of calcium carbonate formed when 25 ml of a solution of calcium chloride at 0.10 m react with sodium
what mass of calcium metal could be obtained from one kg of limestone that is 50.0 pure
A 125 g aluminum block at an initial temperature of 95°C is dropped into a styrofoam flask containing 150 mL of water at 20°C. What is the final temperature?
A 3.84-mole sample of a gas is held at a temperature of 297 K and a pressure of 286 atm. Determine the volume of the gas sample.
Here is it, Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. Why
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