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Calcium phosphide is used to make fireworks. Write a conversion factor that converts between moles of calcium ions in calcium phosphide, Ca3P2, and moles of Ca3P2.
Molecules are mobile in a gas and some reactions can be run in the gas phase. Give several reasons solutions are preferable for synthetic reactions.
for the reaction X(g) + 3Y(g) equilibrium 3Z(g). Kp=2.08x10^-2 at a temperature of 277 degrees Celsius. Calculate the value of Kc
What is the Ag+ concentration when BaCrO4 just starts to precipitate. The Ksp for Ag2CrO4 and BaCrO4 are 1.1x10-12 and 1.2x10-10, respectively.
What is the ratio of acetate to acetic acid? What is the ratio of ethylamine to ethylammoniun ion?
1. The Vmax determined from a Lineweaver-Burk plot corresponds to what function of the slope and y intercept. 2. The Km determined from a Lineweaver-Burk plot corresponds to what function of the slope and y intercept
A chemist prepares a solution of potassium permanganate by measuring out 33.g of potassium permanganate into a 450ml volumetric flask and filling the flask to the mark with water. Calculate the molarity
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
Draw a representation for TPCP that would represent its structure if the phenyls were perpendicular to the 5-membered ring(a paddle wheel structure) and a representation that represents the"propeller" structure is chiral. Is the paddle wheel struc..
A constant current of 119.0 A is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous CuSO4 electrolyte.
A mass of 0.750 g calcium chloride is diluted with 975 g H2O. What is the chloride ion concentration (in ppm)?
A 20.0mL sample of 0.20 M sodium acetate is titrated with 0.11 MHCl (aq). Explain what is the pH after the addition of 50.0 mL HCl(aq). (Kbof CH3CO2-= 5.6 ´ 10-10)
Describe the role of the standard free energy change in bioenergetics. What specifically is meant by different levels of the standard free energy change'?
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