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Large helium-filled balloons are used to lift scientific equipment to high altitudes. (a) What is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºC and rises to an altitude where its volume is twenty times the original volume and its temperature is - 50.0ºC ? (b) What is the gauge pressure? (Assume atmospheric pressure is constant.
Calculate the mass of silver chloride required to plate 135 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag.
What is the [t-BuCl], in M, when bromophenol blue changes color. Given this data, what will the kinetic equation (x-kt) be for this data. If 787 sec were required for the bromophenol blue color to change, then calculate
solid silicon and solid magnesium chloride form when silicon tetrachloride gas reacts with magnesium metal. write a
You are provided a neutral (pH 7.0) aqueous solution of citric acid, caffeine, and triethyl amine. Provide a flow chart for how you would isolate pure caffeine from this mixture using, calcium carbonate, dichloromethane, sodium sulfate(drying), an..
if the rate constant for this reaction was determined to be 5.0 x 10-3 m-1s-1 at 220c and 7.5 x 10-3 m-1s-1 at 350c
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
which of these configurations are in the excited state mark all that apply 1s2 2s1 1s2 2s2 2p3 ne 3s2 3p3 4s1 ne 3s2
Calculate the pH after 0.015 mol solid NaOH is added to 1.00 L of a solution containing 0.050 M propanoic acid (HC3H5O2, Ka = 1.3 x 10 -5) and 0.080 M sodium propanoate (NaC3H5O2)
A 35.0 g block of copper at 350.0 degrees celcius is added to a beaker containing 525 g of water at 35.0 degrees celcius. What is the final temperature of water?
a student found that a maximum of 0.800g silver acetate is able to dissolve in 100.0ml of water. what is the molar
a flash drum is a vessel in which a liquid stream is heated until some of it is vaporized and the liquid and vapor
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 27.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 68.00°C.
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