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Given that each neurotransmitter molecule that diffuses to the surface of an electrode releases two electrons. The average burst of charge measured at the electrode is 37fC. How many molecules are released in an average burst? (Note: 1C= 6.24x10^18 electrons; f=femto 10^-15)
Which two starting materials are needed to prepare the following compound
After the reaction was completed. The solution was back titrated with a NaOH solution (33.50 mL of 0.1500 M).Calculated the Molecular Mass of MCO3. Determine what is this sample: CaCO3 ; MgCO3; or BaCO3 ?
Use tabulated thermodynamic data to calculate ?S° for the reaction: PbO2(s) + 2Ni(s) ? Pb(s) + 2NiO(s)
A 2.770 g sample of a compound containing only carbon, hydrogen, and oxygen burns in excess oxygen to produce 4.06 g of CO2 and 1.66 g of H2O. Calculate the mass (in g) of C in the sample.
have 2.50 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. determine the concentration of the sugar solution after the water has been added.
If the theoretical yield for a reaction was 156 grams and I actually made 122 grams of the product, what is my percent yield
Suppose that the reaction A---> products is exothermic and has an activation barrier of 75kJ/mol. Sketch an energy diagram showing the energy of the reaction as a function of the progress of the reaction. Draw a second energy curve showing the eff..
balance the equation and answer in terms of moles. the disinfectant hydrogen peroxide h2o2 decomposes to form water and
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
What volume of 0.200M HCl must be added to 250.0mL of 0.300M sodium mandelate to produce a buffer solution with a pH of 3.37. The answer is 194 mL of HCl; however, I'm not sure of how to solve for it.
A dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.112 g sample was studied by combustion analysis, 0.201 g of CO2 and 0.0272 g of H2O formed.
A gas mixture contains each of the following gases at the indicated partial pressures: N2, 221 torr; O2, 131 torr; and He, 131 torr.
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