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A graduated cylinder contains 20.5 mL of water. What is the new water level after 27.3 g of silver metal with a density of 10.5 g/mL is submerged in the water?
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate?
If you start with 1.000 g of sulfur (S8) and obtain 4.963 g of pure compound. What is the empirical formula of this compound?
the pH of a neutral solution is 7.83. What is the value of Kw at that temperature?
calculate the molar concentration of all the ions remaining in solution after the reaction has taken place ... Cr(III), hydroxide, potassium, nitrate
Write a nuclear reaction for the neutron-induced fission of U-235 to produce Te-137 and Zr-87? How many neutrons are produced
Draw products A through E for the following series of reactions. If both ortho and para product would form, continue on only with the para product, but mention that ortho would also be a product.
what is the major type of force that must be overcome to allow each of process below
How many grams of water can be cooled from 34°C to 11°C by the evaporation of 85 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g-K.)
The heat of formation of KCl(s) is -436.7 kJ/mol and the heat of formation of KCl(aq, 1 m) is -419.5 kJ/mol.
What is the theoretical yield for this reaction under the given conditions? What is the percent yield for this reaction under the given conditions?
Calculate the concentration of HPO42- ions. (pKa‘s of phosphoric acid - 2.15; 7.2 ; 12.3).
The benzene-toluene system obeys Raoult's law because benzene and toluene molecules have similar shapes and electronic structures
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