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A gaseous mixture of O_2 and N_2 contains 40.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 325 mmHg?
What is the value of Ksp for Ag2SO4 if 5.54 g is soluble in 1.00 L of water?
the equilibrium mixture is compressed at constant temperature to a volume of 6.21 L? [NH3] = [H2S]=
The value of Eo for the following reaction is 0.63V. What will the cell potential be when the [Zn2+] = 0.00020M and the [Pb2+] = 1.0M? Pb2+(aq) + Zn(s) --> Pb(s) + Zn2+(aq)
Calculate the volume of a chromium atom in microliters if the volume of a single chromium atom(Cr) =8.10E-24 cm 3 and determine how many copper(Cu) atoms would there be in 159 milligrams of Cu if The mass of a single Cu atom = 1.06E-22 grams.
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP).
If 3 moles of NaCl are needed to produce 1 mole of AlCl3, how many grams of NaCl are needed to produce 200 grams of AlCl3? Show all of your work/calculations.
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
The compound K2SiO 3 • χH2O is a hydrated crystal. It is analyzed for percent water in a procedure similar to the laboratory assignment with barium chloride
A 2+ ion of a particular element has an atomic mass of 203 and 123 neutrons in its nucleus, a) what is the nuclear charge in this element. Why? b) what are the symbol and name of this element? How do you know?
Order of reactivity, Suggest an explanation for the fact that the order of reactivity of the halides toward n-butylbrosylate in acetone
We place 1.32 mol PCl5 in a 1.0L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask? PCl5 = PCl3 + Cl2 K= .47
Acetylene, C2H2, will burn in the presence of oxygen. 2C2H2(g)+ 5O2(g) -> 4CO2(g)+ 2H2O(g) how many grams of water can be produced by the reaction of 2.40 mol of C2H2 with 7.4 mol of O2?
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