A mixture of 100 g of Ne and 100 g Ar have a total pressure of 16 atm. What is t

Question

A mixture of 100 g of Ne and 100 g Ar have a total pressure of 16 atm. What is the partial pressure of Ne? A) 0.80 atm B) 1.1 atm C) 0.54 atm D) 1.3 atm E) 0.40 atm Which of the following substances is more likely to dissolve in CH_3OH? A) H_2 B) N_2 C) CCl_4 D) CH_3CH_2OH E) Kr Which should be least soluble in water? Dinitrogen tetraoxide decomposes to produce nitrogen dioxide, Calculate the equilibrium constant for the reaction given the equilibrium concentrations at 100 degree C: [N_2O_4] = 0.800 and [NO_2] = 0.400. N_2O_4(g) leftwardsarrowoverrightwardsarrow 2 NO_2 (g) A) K_eq = 0.500 B) K_eq = 5.00 C) K_eq = 2.00 D) K_eq = 0.200 E) K_eq = 0.625 What is the hydronium ion concentration and the pH for an aqueous solution of NH_3 that has a hydroxide concentration of 2.25 times 10^-2 M? A) 444 times 10^-12 M? A) 4.44 times 10^-12 M and 2.65 B) 4.44 times 10^-13 M and 12.35 C) 4.44 times 10^-12 M and 11.35 D) 4.44 times 10^-13 M and 1.65 The rate constant, k, for a first-order reaction is equal to 4.2 times 10^-4 s^-1. What is the half-life for the reaction A) 2.4 times 10^3 s B) 2.9 times 10^-4 s C) 1.7 times 10^3 s D) 1.2 times 10^3 s

Explanation / Answer

37) A) 0.8 atm

The total pressure of an ideal gas is sum of partial pressure of each indiviual gas in the mixture.

38) D CH3CH2OH polar solvents are misible

39) A butane is non polar compound

40) D Keq = 0.4 x0.4/0.8 = 0.2

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