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What is the pH of a 0.17 M solution of oxalic acid, H2C2O4? The Ka1,2 values of oxalic acid are 5.6 x 10-2 and 5.4 x 10-5.
The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. What is the final temperature of methane once the system equilibriates?
A solution contains 0.22 M CaCl2 and 0.12 M MgCl2. What concentration of hydroxide ions would be required to separate the magnesium as Mg(OH)2 without precipitating the calcium as Ca(OH)2?
Calculate the Calorimeter Constant if 25 g of water at 50 C was added to 25 g of water at 25C with a resulting temperature of 35 C?
if the initial concentration of the reactant in a first-order reaction A-> products is 0.64 mol/L and the half-life is 30.0 s. what is the concentration after 60 s.
How is the mass in amu of one atom of an element related to the mass in grams of one mole of the element?
The temperature inside my refrigerator is about 40 Celsius. If I place a balloon in my fridge that initially has a temperature of 220 C and a volume of 0.59 liters, what will be the volume of the balloon when it is fully cooled by my refrigerator?
The half-life of carbon-14 is 5,730 years. If you started with 100.0 g of carbon-14, how much carbon-14 would remain after 4 half-lives.
Determine the pH change when 0.092 mol NaOH is added to 1.00 L of a buffer solution that is 0.457 M in HNO2 and 0.356 M in NO2-.
A TLC plate was run in 1:1 ethyl acetate and hexane, but when developed the plate only showed baseline spots. What change could be made to get the spot(s) to move further up the plate
Why do we have to turn the solution very acidic first before we convert the ions into sulfides? Why don't we just make the sulfides first with the unknown?
Calculate the reaction quotient Qc and find out at which temperature and
What is the molarity of a solution of HCl if 2.0 L of it are needed to react with 20g of NaOH?
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