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If 2.00 g of helium gas and 4.00 g of oxygen gas are mixed together what is the molefraction of helium in the solution?
[A] 0.333
[B] 0.800
[C] 0.200
[D] 0.500
[E] 0.666
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
How many millilitres of 0.200 M HCl must be added to 50.0 mL of a 0.200 M solution of NH3 in order to prepare a buffer that has a pH of 8.60? Kb of NH3 = 1.8 x 10-5.
Question- A 0.75 M solution H2SO4 in water has a density of 1.046 g/mL. What is the concentration of this solution in a) Mole fraction XH2SO4
Gasoline (assumed to be 100% octane) is combusted in your car according to the following chemical reaction:
Find the equilibrium concentrations of A and B for a=2 and b=1. Assume that the initial concentration of is a= 1.0 and that no b is present at the beginning of the reaction. Consider the following reaction and associated equilibrium constant:
Sodium carbonate (\rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103 kg of sulfuric acid solution
Draw the structure of the one alkene which upon treatment with O2 followed by Zn and acid, would give rise to formaldehyde and cyclohexanone
A 200 mL volume of 1.28 M Ba(NO3)2 is diluted with water to a volume of 2.00 L, calculate the molarity (M) of NO3- in the new solution. Molar Mass (g/mol) Ba(NO3)2 261.34 NO3- 62.004 Ba2+ 137.33
that during one such stroke the opposing pressure in the tire was 30.0lb/in2 above the normal atmospheric pressure of 14.7 lb/in2. Calculate the number of joules of work accomplished during each stroke (1 atm= 101.325 J)
Consider a particle of mass, m, moving in a one dimensional system between x=a and x=b. Its potential energy is (1+(hbars)^2)/(mx^2). calculate the average value of x and x^2 for the particle in this system
Describe the process that will result in the greatest amount of work done by the system with a constant external pressure and calculate w. What is the least amount of work done with no restrictions on the external pressure
Calculate the concentrations of total acetate ion for the 7 solutions below, prepared by mixing the specified volumes of .75 M acetic acid with .75 M sodium acetate
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