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Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold. Lead thiocyanate, Pb(SCN)2, has a Kp value of 2.00*10^-5.
"disappeared" from a rock face that is adjacent to a lake (original pH=6.7) with dimensions 100 m x 40 m x 10 m. You think that the "disappearance" is due to leaching of the pyrite into the lake. To prove your point, what would the new pH of the l..
A compound is found to be 30.45% N and 69.55 % O by mass. If 1.63 g of this compound occupy 389 mL at 0.00°C and 775 mm Hg, what is the molecular formula of the compound.
Determine the molecular geometry of each of the following molecules
Calculate the percent yield for the reaction. A scientist performs this reaction in the lab by starting with 30.02 g of Mg and 0.992 moles of Cl2 gas
important to dry the hexane extract phase containing the yellow and green pigment prior to performing column chromatography.
In a gas mixture, the partial pressures are argon 455 , neon 85 , and nitrogen 135 .What is the total pressure exerted by the gas mixture?
What is the pH of the solution created by combining 2.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)?
Cholesterol in blood is measured in milligrams of cholesterol per deciliter of blood. Hospital blood banks normally store blood in samples of 500 milliliter polyethylene bags.
A radioactive element has a half-life of 2.2 hours. How many hours will it take for the number of atoms present to decay to one-sixteenth of the initial value? Show your calculations please.
What is the freezing point of a solution prepared by dissolving 39g of benzene (C6H6) in 500g of cyclohexane. Fp for cyclohexane is 6.6 C Kf=20.0 C/m.
the carbon-carbon bonds would be alternately long and short. However, to consider the structures as resonance contributors (or to connect them by a double-headed arrow) violates a basic principle of resonance theory.
compound A (C10H18O2) is optically pure with an absolute configuration "S" at the stereocentre. The IR spectrum of A has no strong bands at 3400cm-1, a weak band at 3050cm-1, several strong bands from 2850 to 2950cm-1, a strong band at 1740cm-1 an..
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