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A lactic acid/lactate ion buffer solution contains 0.31 M HC3H5O3 and 0.90 M C3H5O3- , respectively. The Ka value of lactic acid is 1.4x10^-4 . Calculate the PH of this buffer.
how many grams of co2 are generated when 98.5 grams of aluminum oxide form, according to the equation al2(co3)3=>al203+3co2
Calculate tthe freezing point in centigrade units of a soluiton consisting of 685 grams of ethylene glycol dissolved
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
what happens when acetate ion reacts with mercuric chcloride? explain with reactions?
If no heat is lost to the surroundings, what will be the final temperature of the mixture?
When doing the kinetic trial, Peyton mistakenly omitted the starch solution from the kinetic trials. How will this omission change the appearance of the resultant solution (from mixing solutions A&B) from that of a correctly completed expiernment?..
calculate the amount of heat necessary to raise the temperature of 53.4 grams of ice at -50.0 degrees celsius to water
Creatine is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly realiable indicator of kidney function.
What's the volume of pure hydrogen present in a sample of 55.0 mL of gas saturated with water vapour at 27 °C, if the total pressure is 104.8 kPa?
The gas is collected over water . If 156 mL of gas is collected at 19oC and 769 mmHg total pressure, what is the mass of hydrogen collected?
35 mL air sample collected at 31 C has a pressure of 575 torr. What pressure will the air exert if it is allowed to expand to 476 mL at 56 ? C? Answer in units of torr.
How much heat is absorbed when 45.00 g of C(s) reacts in the pressence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation?
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