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1) A molecule, whose formula is AB, dissolves in water and also conducts electricity. What one statement best describes this molecule after it's placed in water? A)AB exists as a molecule only. B)AB exists as precipitate only C) The attraction between A and water is weaker than the attraction between A and B. D) AB is an electrolyte. E) Both c and d.
A student placed 18.0 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mark on the neck of the flask was reached.
Balance the following redox reaction in acidic solution. State what is being ocidized, what is being reduced and how many electrons are transferred during the reaction.
The molecular weight of A was found to be 72.06 g mol^-1. Ketones B and C were found to have identical elemental analyses, which were C, 69.72
Coal combustion can affect freshwater or marine (saltwater) organisms in different ways. Describe the steps involved in one such way, from combustion to the effect(s) on one species or group of organisms.
The molarity (moles/L = M) of a solution of 4.0 g NaOH in a total volume of 100.0 mL (or 40 g in 1.0 L) is what?
Based on activation energies and energy changes and assuming that all collision factors are the same, answer the following questions- Which of the following reactions would be fastest in the forward direction
what is the fundamental mechanism by which enzymes enhance the rate of chemical reactions?
If Hg and 1.50g O2 are obtained from heating 56.0g HgO, what is the masspercent yield of O2 ? Hint work out the stoichiometry of the reaction first.
A gas pressure of 2.0 atm is in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature: a) the pressure increases to 6.0 atm. b) the pressure drops to 1.0 atm. c) the pressu..
When 12.0 mL of a 2.89E-4 M barium acetate solution is combined with 18.0 mL of a 5.24E-4 M sodium carbonate solution does a precipitate form
The amount of lead in a aqueous sample is determined by atomic absorption spectrometry. Two standard solutions are prepared and used to make a calibration curve, and then the absorbance of the sample is measured.
Calculate the radius of iridium (Ir) atom given that Ir has FCC crystal structure, a density of 22.4 g/cm³ and atomic weight of 192.2 g/mol
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