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A student added 100 mL of 0.10M NaOH to 250 mL of a buffer that contained 0.15M HC2H3O2 and 0.25M C2H3O2. What is the concentration of HC2H3O2 after the addition of the strong base?
When 4-hydroxybutanal is treated with methanol in the presence of an acid catalyst, 2-methoxytetrahyrofuran is formed. Show the mechanism for this reaction.
Calculate the pressure that CCl4 gas will exert at 40 degrees celsius if 1.00 mol occupies 28.0 L, assuming that A. CCl4 obeys the ideal-gas law
How much energy is evolved during the reaction of 32.5 g B2H6 and 72.5 g Cl2? Given: B2H6(g) +6Cl2 (g)---->2BCl3 (g) + 6HCl (g) DH -1396kj
How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing 10.0 g of histidine hydrochloride
The protein needs to be in 1X buffer and in a total volume of 0.100 mL. You are given a 5mg/mL protein solution, a 20X sample buffer, and distilled water. How much of each wuld you mix together to make the required volume?
Chlorides are at the corners of a primitive cube with a cesium in the middle. Using the Cs atom as the origin calculate the first three terms of the Madelung constant for a CsCl crystal. Recall that M is cal calculated in terms of the ionic "bond ..
Use the PhET to complete the sentences describing how electronegativity is related to bond dipole experienced by the molecule.
why are elements such as Hg, As, Bi, Sb and others first converted to their hydrides prior to sample analysis by Atomic Absorption Spectroscopy?
What are the steps to recrystallize an impure solid? Answer 1. Heating the water. 2. Dissolving the solute.3. Letting the solute cool.4. Collecting and washing the crystals.
A sample of gas is collected over water at a temperature of 35.0?C when the barometric pressure reading is 625 torr. What is the partial pressure of the dry gas, given PH2O = 42.2 torr?
an inert gas has a volume of 941 ml at temperature 28 oC and pressure 675 Torr. What volume does the gas occupy at standard ambient temperature and pressure (SATP)?
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level
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