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Butylated hydroxytoluene (BHT) is utilized as an antioxidant in processed foods. It prevents fats as well as oils from becoming rancid. A solution of 2.505 g of BHT in110.0 g of benzene had a freezing point of 4.600°C. Explain what is the molecular weight of BHT?
Hexacoordinate Fe (II) in heme is bright red. Pentacoordinate Fe (II) is blue. Define how these electronic changes account for the difference in colors of arterial and venous blood
Explain the hydrate of sodium carbonate contains 62.9% water by mass. Utilize this value to verify the chemical formula of the hydrate of sodium carbonate. Presume a 100.0 gram basis
Combustion of 19.81 mg terephthalic acid produces 41.98 mgCO2 as well as 6.45 mg H2O. If 0.315 mol of terephthalic acid has a mass of52.3 g find out the molecular formula for terphthalic acid.
A solution of 2.505 g of BHT in110.0 g of benzene had a freezing point of 4.600°C. Explain what is the molecular weight of BHT
Compute the number of liters of Oxygen gas required to produce15.0 liters of dinitrogen trioxide. Assume all gases are at the same conditions of temperature and pressure.
If 40 pound bag of topsoil that will cover ten square feet of ground at a depth of one inch. Explain how many bags are needed to cover a plot which measures 15 meters x25 meters to at depth of 15 cm
Cyclohexane has a freezing point of 6.50 and a of 20.0. Explain what is the freezing point of a solution made by dissolving 0.771 of biphenyl() in 25.0 of cyclohexane. State the temperature numerically in degrees Celsius.
Explain why is longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography
Butanoic acid has a partition coefficient of 3.0 favoring benzene when distributed between water and benzene. Determine the formal concentration of butanoic acid in each phase when 100mL of 0.10 Maqueous butanoic acid is extracted with 25mL of ben..
Explain what does the reaction between Iron(III) Chloride hexahydrate and potassium oxalate monohydrate produce
Find the heat of combustion in kJ/g for each gas. These values are valid at 25°C, where the water produced by the reaction is in the liquid state.
Explain how many of the following salts are expected to be insoluble in water. Sodium, nitrate, barium, sulfide, ammonium, sulfate, phosphate, potassium
what does it mean to say that the ions of an electrolyte behave independently of one another when the electrolyte is
What is the mass, in milligrams, of mercury in 1.00 kg lake trout that just meets the Northern American standard of 0.50 ppm Hg?
assume no cooling of the metal during transfer. When thermal equilibrium is attained, the temperature of wate-plus-metal has risen to 28.8*C
the heat of vaporization of isopropyl alcohol c3h7oh is 42.1 kjmol. how many grams of water at 0oc could be frozen to
A fixed quantity of gas at 22 deg C exhibits a pressure of 754torr and occupies a volume of 5.52L . Calculate the volume the gas will occupy if the pressure is increased to 1.89atm while the temperature is held constant.
in the laboratory a student named georgia weighed 5.95 g of an unknown solid mixture containing benzoic acid copper ii
A reaction was conducted in benzene as the solvent. Because the reaction was very exothermic, the mixture was cooled in a salt-ice bath. This was a bad choice. Why?
a 325ml sample of gas is intially at a pressure of 721 torr and a temperature of 32 cecius. if this gas is compressed
One beaker contains 10.0 mL of acetic acid/sodium acetate buffer at maximum buffer capacity and another contains 10.0 mL of pure water. Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of .10 M HCl to each one.
A person preparing a fish tank uses boiled (and then cooled) water to fill it. When the fish is put into the tank, it dies. Explain.
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