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Describe any three types of EDTA titrations.
Suppose that the silver-silver chloride electrode in the figure is replaced by a saturated calomel electrode. Calculate the cell voltage if [Fe2+]/[Fe3+] = 5.0 10-3. V
What mass of formaldehyde gas must be released from building materials to produce a concentration of 50 ppm of the gas in a room with dimensions of 4m*5m*2m?
Predict the type of substitution mechanism, predict which reaction of the pair will occur at the faster rate, and draw the correct organic product.
A 12 oz can of Coke contains 46 mg of caffeine. One fluid ounce is equivalent to 29.57 mL (1 oz = 29.57 mL). What is the concentration of caffeine in Coke, in units of mg/mL
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
Methanol is toxic because it is metabolized in a two-stop process in vivo to formic acid (HCOOH). Consider the following overall reaction under standard conditions: O2(g) + CH3OH(l) -> HCOOH(l) + H2O(l) +1019.6 kJ
Heterogeneous catalysts that perform hydrogenation reactions are subject to poisioning which shuts down their catalytic ability. Compounds of sulfur are often poisons.
State the organic products of each of the subsequent reactions show the structures of the reactants as well as products. If two stereoisomers are formed demonstrate both and label all sterogenic centres R or S as appropriate.
In non-ionic compounds, the two primary sources of intermolecular forces are permanent dipoles and temporary dipoles. Explain what causes each of these types of dipoles to form.
Calculate the equilibrium concentration of each substance in the reaction. b.) Calculate the equilibrium constant for the reaction.
What is the change in internal energy (in J) of a system that absorbs 0.330 kJ of heat from its surrounding and has 0.586 kcal of work done on it in scientific notation.
What is the total vapor pressure 4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult's law holds for each component of the solution.
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