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May 19, 2013

Posts by GK


Total # Posts: 639

Chemistry
•Find the difference in electronegativity between H and F. •Find the difference in elctronegativity between H and I. •Compare the two differerences. The larger difference indicates the larger polarity.

chemistry
The equilibrium constant expression is: K(eq)=[N2][O2] / [NO]^2 = 8.36*10^3 Substitute the concentrations given and solve for [NO]

chemistry
The oxidizing agent, Ag+, gained an electron and is reduced to Ag(s). The reducing agent loses an electron and is oxidized from Fe^2+ to Fe^3+: Ag^+(aq) + Fe^2+(aq) --> Ag(s) + Fe^3+(aq)

Chemistry
Convert degrees C to degrees K. K = C + 273 Convert torrs to atm. atm = torrs / 760 Substitute in PV = nRT and solve for V

Chemistry
Convert deg. C to deg. K, then substitute into the Combined Gas Law: P1V1/T1 = P2V2/T2 Solve for V2. Your answer is not correct.

chemistry
Is the question about the mole ratio in the product or the mixture?? If the product is CuS, the mole ratio in the product is 1molCu/1molS=1 molCu/molS The mole ratio of the masses of the elements in any compound is definite, not dependent on the reactants ratio in making it.

Chemistry
A gas mixture in a container may start heterogeneous but the constant, random motion of the molecules in it will make it homogeneous in a very short time.

Chemistry
Statements A, B, and C are correct.

chemistry
K(eq) = [CH3OH] / [CO][H2]^2 let [CH3OH] = [x] Substituting, 10.2 = [x] / [0.02][0.02]^2 Solve for [x]

chemistry
In a Bronsted-Lowry acid-base reaction with a high Keq value, Acid + Base = Weaker acid + Weaker Base Acid1 + Base1 = Base2 + Acisd2 Acid1 is stronger than Acid2, and, Base1 is stronger than Base2 In your question, the equilibrium constant is small. The forward (left to right)...

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