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As the size of groups increases, all but which of the following is true?

The two types of check valves commonly used for residential applications are

For a reaction, what generally happens if the temperature is increased?

The equilibrium constant is given for one of the reactions below. Determine the value of the missing equilibrium constant.

The rate constant for a first-order reaction is 0.54 M-1s-1.  What is the half-life of this reaction if the initial concentration is 0.27 M?

Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation: At 250° 0.125 M PCl5 is added to the flask. If Kc = 1.80, what are the equilibrium concentrations of each gas?

The first-order decomposition of N2O at 1000 K has a rate constant of 0.76 s-1. If the initial concentration of N2O is 10.9 M, what is the concentration of N2O after 9.6 s?

Which of the following represents the equation for a second-order half-life?

Given the following rate law, how does the rate of reaction change if the concentration of Y is doubled?

Consider the following reaction at equilibrium.  What effect will adding more H2S have on the system                       (H2S(g) + 3 O2(g)  ⇌  2 H2O(g) + 2 SO2(g)