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Assuming that equal numbers of moles of each were released into the air at ground level, rank these four compounds in terms of their potential to catalytically destroy ozone in the stratosphere. Exp
What is the strongest base that may exist in water. What happens to stronger bases
The mass percent of water in a hydrate of MnCl2 is 36.41%. What is the empirical formula of the hydrate
An unknown solution containing one of the salts ZnSO4, MgSO4 or SrCl2 gives a negative flame test but tarnishes a piece of magnesium inserted into the solution. Which salt was in the solution
Describe the technique used to determine the density of approximately 5 gram samples of the following at 20 degrees C and 1 atmosphere pressure: A) Gasoline B) Granular Sugar C) A lump of gold D) Me
Suggest simple laboratory tests you could use to distinguish acetone, carbon tetrachloride, cyclohexane, ethyl ether and ethanol.
An X-ray has a wavelength 1.44A. Calculate the energy in J of one photon of this radiation.
Perchloric acid is the strongest of the halogen oxoacids while hypoiodous acid (HIO) is the weakest. Explain this in terms of the structure, etc. of the two acids
which mixture would not be expected to be homogeneous. pentanol and hexane, KBr and water, acetic acid and methanol, ethylene glycol and water, octane and heptane
An unknown metal chloride has the formula MClx. The addition of 28.9 mL of 0.432 M aqueous lead (II) nitrate to 26.7 mL of 0.311 M aqueous MClx causes all the lead ions and chloride ions present in
What percent error results from the assumption that the density of water is 1.000 g/ml at 20 C
Grams and centimeters in the metric system have been defined so that the density of water at 3.98 C is exactly 1. At 20 C, the density of water is 0.9982 g/ml. What percent error results from the as
8.0 mL of 10.0 ppm fe 2+ solution is diluted to 100.o ml. What is the concentration (in ppm) of the resulting solution?
Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00M solutions of their ions.
One hundred fifty kmol of an aqueous phosphoric acid solution contains 5.00 mole % H3PO4. The solution is concentrated by adding pure phosphoric acid at a rate of 20.0 L/min
Does this verify that only a single detergent compound is in the extract. What specifically can you do to gain more information about the composition of the shampoo extract
How does boiling point relate to freezing in this scenario. would the same one with the higher bioling point also have a lower freezing point. why
The land area of Greenland is 840,000 mi2 with 132,000 mi2 free of ice. The average thickness of ice is 5000 ft. The density of the ice is 0.917 g/ml. Calculate the mass of ice in tons
Why is it recommended to use no more than the minimum amount of solvent than is necessary to dissolve the solid being recrystallized
If the melting point of the compound is unknown the melting point measurement could take an exceedingly long time if the rate of heating of 2C/min is followed over the entire range from room tempera
What gas escaped during the sodium bicarbonate washing. Write balanced equations for two reactions that took place during this operation.
Consider two aqueous solutions, A and B (which contain different solutes). Is it possible for solution A to have a greater concentration than solution B in terms of mass percent, but a smaller conce
A mole of hydrogen gas was found to have an average De Broglie's wavelength of 1A (10^-10m), the approximate length of the H-H bond. What temperature is the gas kept at
If a sample of Mg is not fully thermally decomposed during the procedure, will the mole ratio of Ca to CO2 be higher or lower? Explain.
Provide an expression for the relative probability of finding a population of particles in the box in the second excited state relative to the ground state at 10000K