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Calculate the osmotic pressure of a solution containing 16.0 g of glycerine (C3H8O3, a non-volatile molecular material, MM 92.11 g/mol) in 500.0 mL of solution at 298 K. (R = 0.08206 L.atm/mol.K) Π = c R T i, with concentration (c) in molarit
A 100.0 mL aliquot of 0.100 M weak base B (pKb = 5.000) was titrated with 1.00 M HClO4. Find the pH after 1.3 mL of acid is added. Then Find the pH after 11.1 mL of acid is added.
Which substance posses the larger standard enthalpy.
Semiconductors, such as silicon, are the heart of the circuits that form the basis for computers and other electronics. These materials are characterized by a gap in the energy
Upon examination of a periodic table, what do the elements in Group VIA have in common (in terms of their electron configuration)?
what is its empirical formula. A 0.2000 gram sample of a compound (vitamin C) composed of only C, H, and O is burned completely with excess O2 . 0.2998 g of CO2 and 0.0819 g of H2O are produced. What is the empirical formula?
compare the stabilities of each of the four conjugate bases that would be formed from the doprotonation of the four different OH groups and determine which of hte OH is most acidic.
Determine the molality and molarity of the HCL, if the solution has a density of 1.20 g/ml.
what kind of inter-molecular interactions would likely dominate? explain your reasoning
The diameter of the cylinder is 0.5m. and the piston height is 1m. a.what is the mass of the weights on the cylinder? b.You heat the gas to 1000k. how high will the cylinder rise? c.How much work will the engine provide?
one vector has an x-component of 9 m a y-component of 10 m and a z component of 9 m. another vector has an x-component
a 2.52-g sample of a compound containing only carbon hydrogen nitrogen oxygen and sulfur was burned in excess o to
A galvanic cell Zn / Zn2+ // Cu2+ / Cu generates a current of 4.00 Amperes for 1.00 hour. The cathode increases in mass by 10.0g . If charge on an electron is 1.602 x 10-19 coulombs/ electron. Calculate the Avogadro's number using these experimenta..
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