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A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 823 N. What is the acceleration of the elevator?
It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents 79.0% of all magnesium atoms, Mg-25 accounts for 10.0%, and Mg-26 is the remaining 11.0%.
Calculate the % of acetic acid in vinegar is the mass of acetic acid is 0.104 g and the mass of the vinegar is 2.00 mL, assuming that the density of vinegar is 1.02 g/mL.
Ascorbic Acid (Vitamin C) contains C, H, and O. In one combustion analysis, 5.24 g ... analysis, 5.24 g of ascorbic acid yields 7.86 g CO2 and 2.14 g H2O. Calculate the empirical formula and molecular formula of ascorbic acid given ... [PDF] 112
what is the partial pressure of carbon dioxide in a container that contains 7.64 mol of oxygen 1.68 mol of nitrogen and
Gold (Au) crystallizes in a cubic close-packed structure (the face-centered cubic unit cell) and has a density of 19.3 g/cm3. Calculate the atomic radius of gold in picometers.
A graduated cylinder contains 129 mL of water. A 17.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 17.0 g piece of lead are added. What is the new water level in the cylinder?
What is the probability of locating an electron between x = 0 and x = 0.2 nm in its lowest energy state in a conjugated polyene molecule
Calculate the equilibrium constant for the reduction of bismuth from the Bi(III) tetrachloro ion to the elemental metal.
hyperchem puts it in one of the two degenerate homo orbitals. display these two orbitals and paste them into your
Given a buret filled with 0.12 M acetic acid and a second buret filled with 0.14 M sodium acetate, how many milliliters of each solution should be mixed together to produce 18.5 mL of a solution with a pH of 4.80
A 10.00 mL aliquot of weak base is titrated with HCl. The equivalence point is reached after 17.21 mL of 0.4332 M HCl has been added. The pH is equal to 10.03 after 5.00 mL of HCl was added. Determine
A graph of ln (K) versus 1/T for this reaction gives a straight line with a slope of 1.341X10^4 K and a y-intercept of -14.37. Determine the values of ΔH° and ΔS° for this reaction
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