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1. Which of the following compounds listed below is water-soluble? A. Ba(NO3)2 B. CuS C. Fe3(PO4)2 D. Mg(OH)2
2. Calcium nitrate dehydrate is dissolved in water. What ions are present in solution? A.Ca2+ and 2 NO3- B. Ca2+and 2 NO3- C. Ca2+ and NO32- D. Ca+ and NO 3-
3. A 1-g sample of each of the four compounds listed below was placed in a beaker with 100 mL of water. The mixture was then tested to see if it conducted an electric current. Which solution was a weak conductor of electricity? A. Ethanol B. acetic acid C. NAC1 D. NaOH
What biochemical changes are required to convert tyrosine to (a) norepinephrine and (b) epinephrine? and 3- Some bacterial signaling systems involve kinases that transfer a phosphoryl group to a His side chain. Draw the phospho-His side chain.
Consider a glass of 171 mL of water at 29°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
The energies of these two objects initially have the values indicated; the objects are then brought into thermal contact with each other. Explain what happens subsequently and why, without using the word "temperature."
Modern instrumental techniques are capable of detecting lead in a milliliter sample at picomolar concentration. How many moles of lead are in the sample
The effective nuclear charge, Zeff, for a valence electron can be approximated using the "core charge" of the atom, that is, the total charge of the nucleus and the inner (non-valence) electrons.
Benomyl, chlorothalonil, ethylene oxide, fuberidazole, and ziram. find the 2 weak base and estimate what pH the water would need to be to drop their vapor pressure to 50% that of a solution of the free base
For each of the reactions, calculate the mass (in grams) of the product formed when 3.51g of the underlined reactant completely reacts. Assume that there is more than enough of the other reactant.
Explain how many grams of AgNO3 (169.9 g/mol) must be added to 250.0mL of a saturated solution of Ag2SO4 to reduce the solubility of the Ag2SO4 to 1.0 x 10-3 M.
What is the E°cell for the cell represented by the combination of the following half-reactions
What effect on the value of Ca(OH)2's Ksp (6.5x10^-6 ) would sucking up some suspended calcium hydroxide solid have. Would the Ksp value be higher or lower than the normal value. Why
How does a bubble sorting algorithm work in C++? When is it commonly used?
55.0 ml of 0.10 m hclaq is mixed with 55.0 ml of 0.10 m naoh 9aq in a coffee cup calorimeter. both solutions are
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