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There are three different possible structures known as isomers for a dibromoethene molecule, C2H2Br2. One of them has no net dipole moment, however the other two do. Depict a structure for each isomer. Comprise H atoms.
an ideal gas is permitted to expand isothermally from two liters at 5.00 atm in two steps1 against a constant external
You have 25 ml of an ATP solution. You take 30 µl and dilute to a final volume of 10 ml. The OD of this solution is 0.432. What is the concentration of the undiluted ATP solution
describe and explain the possible effect on your results of the following experimental errors or variations. a) you added only enough 3 M H2SO4 to bring the pH down to 4. b)your reaction mixture had an oily layer on top when you added the 3 M sulf..
a 2.067-g sample of a monoprotic acid was dissolved in water. it took 25.24 ml of a 0.1578 m naoh solution to
Aqueous solutions of phosphoric acid and sodium nitrite are combined, and the following equilibrium is established. H3PO4 (aq) + NO2- (aq) = H2PO4-(aq) + HNO2 (aq). The equilibrium constant Kc for this reaction is greater than one. Based on this i..
Calculate the de Broglie wavelength for each of the following.a 57 g ball with a velocity of 35. m/s b an electron with a velocity 12% the speed of light.
3000 MT of a 6-10-16 fertilizer was prepared by mixing ammonium sulfate (95% purity), phosphoric acid (95% purity), muriate of potash (95% purity) and gypsum (90% purity). Compute how much of the gypsum was used.
What mass of sucrose should be combined with 541 of water to make a solution with an osmotic pressure of 8.30 at 295 ? (Assume the density of the solution to be equal to the density of the solvent.)
Explain Burning in pure oxygen, the hydrocarbon gas butane, C4H10, produces carbon dioxide and water. If 0.30 moles of butane are burned, define how many moles of carbon dioxide and water are formed
An aquifer has a hydraulic gradient of 0.00086, a hydraulic conductivity of 200m*day^-1 and a porosity of 0.23. A chemical with a retardation factor of 2.3 contaminates the aquifer. What is the linear velocity of the contaminant
A 21.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rises from 25.0°C to 62.3°C, determine the heat capacity of the calorimeter. The molar mass of ethanol is 46.07 g/mol.
what ph must be maintained by a buffers solution so that no more than 0.010 of the mg2 present in 0.360 m mgcl2 aq
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