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explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
A stock solution is prepared by adding 20 mL of 1.21 M AlCl3 to enough water to make 72 mL. What is the Al3+ concentration of 30 mL of the stock solution
A certain solid metallic element has a density 7.87 g/cm3 and a molar mass of 55.85 g/mol. It crystallizes with a cubic unit cell, with an edge length of 286.7 pm. calculate the number of atoms per unit cell.
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor.
N2 + 3H2 --> 2NH3 what volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
while heating two different samples of water at sea level one boils at 102 c and one boils at 99.2 c. Calculate the percent error for each sample from the theoretical 100.0 c
The volume of a gas is 93 mL when the temperature is 91 C. if the temperature is reduced to 0 C without changing the pressure, what is the new volume of the gas
calculate the molar concentration of OH- ions in an 0.85M solution of hypobromite ion, BrO- (Kb = 4.0x10^-6). what is the pH of this solution?
Why it is important that any aldehyde used in Witting reaction be free of carboxylic acid impurities?
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.041 moles of sulfuric acid is mixed with water to make 169 mililiter of solution, what is the molarity of H+? Answer in units of M.
An airplane is pressurized to 650 mmHg. If air is 21% oxygen, what is the partial pressure of oxygen on the plane?
What is the maximum wavelength of light capable of removing an electron from a hydrogen atom in the energy states characterized
Determine the mass of Cr 3 + in the original solution if The total mass of the precipitate = 49.6 .
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