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If the concentration of EDTA in the blood of a patient is 2.45x10^-8 M and the formation constant for the complex, [Pb(EDTA)]^-2 is 2.00x10^18, what is the concentration ratio of the free (and potentially toxic) Pb^2+ (aq) in the blood to the much less toxic Pb^2+ -EDTA complex?
A 144-mL portion of that solution is diluted by adding 169 mL of water. What is the final concentration? Assume the volumes are additive.
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 q). How many milliliters of coffee can be obtained from 1 g of coffee beans.
Calculating Delta H, Use some or all of the following reaction enthalpies to calculate delta H for the reaction:
Sulfur is used to crosslink isoprene (C5H8) units in naturally occurring rubber to make vulcanized rubber, which is a harder material. If it takes 4 sulfur atoms to form a crosslink with 1 isoprene unit
Description of amino acids, Chiral compounds occur when a carbon atom has four different things bonded to it. All but the simplest amino acids (glycine) are chiral because the alpha carbon has an amine group
Identify the following systems as open, closed, or isolated. i) Coolant in a refrigerator coil ii) The combustion of liquid hexane in a bomb calorimeter
What pressure is exerted by 0.625-mole of a gas in a 45.4-L container at -24.0°C?
Elemental "white" phosphorus exists in nature as P4 molecules, in which all the P atoms have identical bonding. (a) Draw a Lewis Structure that represents this molecule.
what is the energy difference between the heats of formation you calculated for carbocation A and B?
A backpacker wants to carry enough fuel to heat 2.7 of water from 30 to 100.0 . If the fuel he carries produces 36 of heat per gram when it burns, how much fuel should he carry? (For the sake of simplicity, assume that the transfer of heat is 100 ..
Explain why the benzyl carbocation is more stable than the allyl carbocation?
Write the standard line notation for each cell below. Assume all concentrations are 1.0 M and all partial pressures are 1.0 atm. IO3-(aq) + Fe2+(aq) --> Fe3+(aq) + I2(aq)
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