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Although the solution of 2, 6-dichloroindophenol had known amounts of solute and solvent, explain why was it necessary to standardize it before using it?
Calculate the pH of the stock sodium acetate where the concentration of both sodium acetate and acetic acid is 1M and the pKa of acetic acid is 4.75.
consider a 0.0500m HClO2 is a moderately weak electrolyte acid such that 36% of the molecules dissociate when dissolved in water. calculate the van't hoff factor
How many grams of urea [(NH2)2CO] must be added to 345 g of water to give a solution with vapor pressure 2.45mmHg less than that of pure water at 30 degrees Celsius?
If toluene is an aromatic hydrocarbon, a compound composed of only C and H. If you burn 0.356 g of the compound and determine that it produces 1.22 g of CO2 and 0.286 g H2O, Find out the empirical formula of the compound.
C3H8 + 5O2 reacts to yield 3CO2 + 4H2O +488 kJ What is the heat released if 2.5 moles of C3H8 reacts completely with oxygen?
Over what (approximate) wavelength range is the emission of light from excited sodium atoms most sensitive to the eye
Decide whether or not each of the following metals dissolves in 1 M HCl . For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
Don't quite grasp the differences between end-to-end overlaps and side-to-side. I feel like it's commone sense that one is overlapped at the end and one at the side, but what all goes into that determiniation
Consider the following reaction. N2(g) + 3H2(g) > 2NH3(g) The initial pressures of the H2 IS 3 atm and the pressure of the N2 IS 2 atm. Which statement is true? N2 is a limiting reagent H2 is a limiting reagent Neither gas is a limiting reagent
Potassium nitrate has a lattice energy of -163.8 kcal/mo land a heat of hydration of -155.5 kcal/ mol. How much potassium nitrate has to dissolve in water to absorb
What is the Normality of a solution of KOH if 45.18 mL are required to neutralize 0.3 g pure oxalic acid
What mass of CCl2F2 substance must evaporate in order to freeze 109 of water initially at 24 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
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