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Explain what is the pH of a solution prepared by adding 15ml of .10M acetic acid ka=1.8X10-5 and 10ml of .10M sodium acetate? Explain what is the pH after the addition of 1mL of .10M NaOH to 15ml of the solution above?
what measuring device would you use to measure the volume under each of the conditions described below? in some cases
question if 5.20 ml of 0.1000 m naoh solution is needed to just neutralize excess acid after 20.00 ml of 0.1000 m hcl
the partial pressure of o2 in the lungs ranges from 25 mmhg to 40 mmhg. what concentration of o2 in grams per liter
Determine the normal boiling point of a substance whose vapor pressure is 55.1 mm Hg at 35°C and has a Hvap of 32 .1 kJ/mol.
tartaric acid is a substance that is often present in wines and preticipates from soultion as the wine ages. the
Empirical formula Pt(NH3)2Cl3. Sketch at least four isomers which correspond with the given empirical formula and have a molecular mass of 670 g/mol. What are some of these isomers and in a complex ion, can a chlorine atom be bonded to two other a..
Rb-87 decays with a half-life of 48.8 billion years to Sr-87. For short periods of time, there are so few decays that the number of changed nuclei is far smaller than the experimental error.
The optical rotation of a sample composed only (S)-1-amino-1-phenylethane is determined. [a]obs = -157.0 degrees. If the cell path length was 1.0 dm and the concentration of (S)-1-amino-1-phenylethan in the sample was 5.2 g/mL
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
it takes 208.4 kj of energy to remove 1 mole of electrons an atom on the surface of rubidium metal. how much energy
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
Maple syrup is habitually a solution of sucrose in water. Compute the molality of the syrup if a sample freezes at -.50 degrees Celsius, presuming the solute is pure sucrose. (Kf = 1.86 degrees Celsius/m)
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