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Calculate the mass of the precipitate formed when 2.27 L of 0.0820 M Ba(OH)2 is mixed with 3.06 L of 0.0664 M Na2SO4.
two gases are contained in gas bulbs connected by a valve. gas a ispresent in a 44 l bulb at a pressure of 381 torr.
Assuming that at some time the concentration of potassium tartrate is twice as high as that of tartaric acid, calculate the pH of the wine. The pKa of tartaric acid is 2.96.
At 25 C, the standard hydrogen electrode (SHE) has a half-cell potential that is defined to be 0.00 volts. If the pH is increased at this electrode (keeping everything else the same), at what pH will the half-cell potential be equal to -0.337 volt..
About 70 million tons of paper are used per year in the U.S. If the U.S. population is 301.6 million people, how many kilograms of paper are used by the average citizen
There are very few compounds that contain an element from the noble gas family (elements in column 18, rightmost column). Explain why there are so few noble gas compounds in nature.
1. for each of the colored solution below consider the region ofthe visible spectrum in which the compound should
A system is expanded against an external pressure of 2 atm, changing its volume from 10 to 35 L and absorbing 765 J as heat from the surroundings.
As gas expands from 1.00 L to 2.50 L against constant pressure of 820 torr. Calculate the change in internal energy for the gas, if 120 J of heat is transferred to the gas during the expansion.
A solution contains .10 M iodide ion, I- and 0.10 M carbonate ion, CO32-.... a. If solid Pb(NO3)2 is slowly added to the solution which salt will precipitate first, PbI2 or PbCO3? What will the concentration of the first ion that precipitates when..
The final temperature of the the calorimeter is 24.0 C. What is the specific heat capacity of unknown metal? The specific heat capacity of water is 4.184 J g^-1 C^-1
question an acetylene tank for oxyacelylene welding will provide 9340 liters of acetylene gas c2h2 at stp. how many
why is the experimental mole ratio of Cu/O not exactly a whoe number. Think of what may have happened to the copper during the drying period, and what effect this would have on the calculated values
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