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The Henderson-Hasselbach equation is pH=pKa+ log [Conjugate base/weak acid]. What is the pH of a 1L buffer containing 1.5M Acetic Acid and 1.0M Sodium Acetate? What is the pH of the buffer when 0.5 moles of NaOH is added to solution? Assume no change in volume.
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland (760 normal pressure). How would the boiling points of a liquid compare in these two locations? Why?
Calculate the mass in grams for a sample of Al that absorbs 1.70kJ when the temperature increases from 56 degree Celsius to 177 degree Celsius?
Calculate the binding energy per nucleon (in MeV) for P-32 (atomic mass = 31.9739 u). mass H = 1.007825 u and mass n = 1.008665 u.
A set of data gave an average unpopped kernel of 0.12 grams. How many kernels are in a pound of unpopped corn?
Describe the basic steps involved in gravimetric analysis. How does this procedure help us determine the identity of a compound or the purity of a compound if its formula is known.
how many moles og Agcl are produced when 100.0mL of 358 M silver nitrate and 50.0mL of .716 M sodium chlroide are mixed?
A gaseous compound is 78.14 percent boron and 21 86 percent hydrogen . At 27 degrees celcius, 74.3 ml of gas exerted a pressure of 1.12 atm.
water to give a solution that has a vapor pressure of 37.2 torr at 35 °C? Assume complete dissociation of the solute and ideal solution behavior
Calculate the value of the reaction quotient Q. (b) Is the system at equilibrium? If not, predict which way (right or left) the reaction will proceed to reach equilibrium.
A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?
a sample of oxygen occupies 178 mL in a cylinder shown at a barometric pressure of 734 torr and 25 degrees Celcius. If the piston is pushed in and compresses the oxygen sample to 134 mL, what is the pressure (in torr) of the gas?
Write the corresponding ionic and net ionic equations after Balancing these given equations
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