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The molar masses of He and of HCl are 4.00 g/mol and 36.46 g/mol, respectively, if helium's average speed is 1200 m/s, what is the average speed of HCl?
If the boiling point of the pure of (S)-(-)-alpa-phenylethylamine is 186-188 degrees Celsius, what is the bp of its enantiomer. What optical rotation would be observed if 3.72 g of (S)-amine were mixed with 3.72 g of the (R)-amine
Give the reaction products of sodium borohydride (followed by acidification) with the following compounds. a) acetone
An organic liquid is being evaporated in a still using hot water flowing in a cooling coil. Water enters the coil at 13°;0F at the rate of 1,000 lbdmin.
yellow sodium light is made up of photons of two wavelengths. 589.0nm and 589.6nm. what is the difference in energy
The Eriochrome Black T indicator is mistakenly omitted. what is the color of the analyte (standard Ca^2+ solution)? Describe the appearance of the analyte with the continued addition of the Na^2H^2Y solution? Explain?
If a mixture of 14.0L of N2 and 24.0L of H2 are reacted, what volume of NH3 can be produced at STP?
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
The item itself serves as the cathode, at which the Au3+ ions are reduced to Au(s). A piece of solid gold is used as the anode and is also connected to the power source, thus completing the circuit. What mass of gold is produced when 5.00A of curre..
The absorbance of solutions containing Cr as dichromate Cr2O7-2 in 1.0M H2SO4 were measured in a 5cm cell. The following results were obtained. What is the molar absorptivity of dichromate
suppose that you added 35.0 g of water at 99.50 degrees celsius to a calorimeter containing 150 g of water at 23.0
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a boiling point that is lower than the one found for ..
If Ka for an acid, HA, is 0.00177, what is the pH at one half the equivalence point for a titration of 50.00 mL of 0.100 M HA with 0.100 M NaOH
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