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Calculate the pH during the titration of 100.00 mL of 0.200 M HNO3 with 0.400 M KOH after 0, 25.00, 50.00, and 75.00 mL of KOH have been added.
the absorbance of the solution was found to be .5528. Based on the calibration curve of Y=26.1x + .081 (where absorbance is on y axis and concentration of product C is on the x axis) determine the equilibrium concentration of C, then using an ICE ..
calculate the change in internal energy for a system that is giving of 25.0 kJ of heat and is changing from 12.00 L to 6.00L in volume at 1.50 atm pressure.
when 3.299 of iodine reacts with fluorine, 5.768g of IFx is formed. What is the value of x in product formula (IFx)?"
what mass of Fe (OH)3 would be produced by reacting 75.0 mL of a 0.0815M Fe( NO3)3 solution with 125 mL of a 0.150 M NaOH solution
calculate the final temperature when a 25.5 gram sample of ice at 0oc is placed into a styrofoam cup containing 116
what is the pkaof the acid, what is the molarity of the original acid solution and what is the molecular weight of the acid
Suppose you are given a 2.75 g sample of the orginal mixture. You isolated the pure metal from the other components and determined that the mass of the metal was 1.25 g. What is the percent by weight of the metal in the orginal sample
compute the change in entropy of the universe if water vapor of one mol condenses to liquid water at the temperature of
a liter of solution contains 0.140 M Ca+2 and 0.140 M Pb+2. They are to be seperated using chromate (CrO4-2) to selectively precipitate out one metal.
Iron pyrite, commonly known as "fool's gold," is 46.5% Fe and 53.5% S. A crystal of iron pyrite contains 4.24g of iron. A) Calculate the mass in grams of the crystal. B) How many moles of iron is in the crystal
write a 200 word essay in any style and identify and discuss three key features associated with the combustion of
When completely filled with water, the beaker and its contents weigh 297.65 g. Use d=100 g/mL as the density of water. What volume does the beaker hold?
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