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How could you separate barium sulfate,BaSO4,from (NH4)2CO3? How could you separate zinc chloride, ZnCl2, from zinc sulfide,ZnS? How could you separate tellurium dioxide, TeO2, from SiO2? Naphthalene sublimes easily but potassium bromide does not. How could you separate these two substances?
A sample of hydrogen is collected in a eudiometer at a temp of 23C. If the atm is 735 torr, what is the pressure of the carbon dioxide
Determine the mass, of: a.30.0 mL of the liquid propylene glycol, a moisturizing agent for foods,
What is the minimum voltage needed to produce a reaction in the electrolysis of copper(II) sulfate using inert electrodes. This is the same as asking what is Ecell for the electrolytic cell. However, express your answer as a positive number.
find the volume of a gas inside a cylinder.1. air trapped in a cylinder fitted with a piston occupies 168.8 ml at 1.08
A 5 g antacid tablet listing aluminum hydroxide, Al(OH)3, as its active ingredient requires 138.60 mL of 0.1111 M hydrochloric acid to neutralize via titration. What is the percent (w/w) of aluminum hydroxide in the tablet
An ammonia/ammonium buffer solution contains 0.22M NH3 and 0.83M NH4^+. The Kb value of ammonia is 1.8*10^-5. Calculate the of this buffer.
an ice cube of mass 9.0g is added to a cup of coffee whose temperature is 85c and which contains 110g of liquid. assume
Calculate the mass of water formed by the complete reaction of 935 g of propane (C3H8) with excess oxygen. (Write a balanced equation)
what mass of zinc can be plated onto a metal sheet a process call galvanizing from an aqueous zinc sulfate solution
At 20 degrees C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 52.9 torr at 20 degrees C.
Why does the non aqueous reaction of pyridine and SnCl4 produce a white precipitate
Cyclohexane has a freezing point of 6.50 C and a Kf of 20.0 C/m. What is the freezing point of a solution made by dissolving 0.771 g of biphenyl (C12H10) in 25.0 g of cyclohexane?
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