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the mineral fluorite is composed of CaF2. the molar solubility of calcium fluoride in water is 2.1x10^-4 moles/L. what is the ksp of CaF2?
Calculate the Standard Enthalpies & Standard Entropies for each reactant & product at the temperature given first, then determine the ?H°rxn and ?S°rxn at 1600 K Zr(beta) + O2 = ZrO2(beta) Other information:
Calculate the amount (g) of each of the following salts that would need to be added to a 200mL volumetric flask to produce a 2 M solution of S?
Given below is a table ...on the right are the molarities and percent transmittance (at fixed path length and wavelength) For three known solutions and an unknown solution of a compound in water: Which one of the following values is possible as the m..
A 35.0 g sample of a nonelectrolyte was dissolved is 680. g of water. The solution's freezing point was -2.80°C. What is the molar mass of the compound?
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid.
The magnesium and calcium ions present in seawater([Mg2+] = 0.059 M and [Ca2+] = 0.011 M) can be separated by selective precipitation with KOH.
Two common substances that are used in the northern U.S. to melt snow and ice are sodium choride (rock salt) and calcium chloride. You have a bag of a substance sold as melting salt
Vanadium(V) Oxide reacts with calcium according to the chemical equation below. When 10.0 moles of V2O5 are mixed with 10.0 moles of Ca, which is the limiting reagent?
Purification of nickel can be acheived by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell
butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -.4 degrees Celsius. A 250 mL sealed flask contains .75 g of butane at -22 degrees C.
What volumes of CO2 and NH3 at 201 atm and 450.°C are needed to produce 2.54 kg of urea, assuming the reaction goes to completion?
if 2000 l of hard water contains 0.022 m ca2+ and 0.0070 m mg2+, how many moles of na+ are needed to replace these ions?
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