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For this question, answer it on your work paper. In the box below, type “complete” when finished. Make sure to show all of your work. At 1225 °C, Kc= 2.60×10–9  for the following reaction:  2 A (aq)   ⇄   B (aq) +   5 C (aq) At equilibrium, it is determined that [A] = 4.59 x 10-3 and [B] = 1.07 x 10-2 M. What is the concentration of compound C at equilibrium?

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Which of the following substances  is the conjugate base of CH3NH3+?

Which of the following substances  is the conjugate acid of CH3NH2?

The hydrogen carbonate ion (HCO3-) is amphiprotic.

For this question, answer it on your work paper. In the box below, type “complete” when finished. Make sure to show all of your work. At 700 °C, Kc= 3.85×108  for the following reaction:  A (aq) +   5 B (aq)   ⇄   2 C (aq) At equilibrium, it is determined that [A] = 1.07 x 10-2 M and [C] = 4.59 x 10-3 M What is the concentration of compound B at equilibrium?

The carbonate ion (CO3-) is amphiprotic.

For this question, answer it on your work paper. In the box below, type “complete” when finished. Make sure to show all of your work The Kb of a base is 7.1 x 10-7. Calculate the Ka for its conjugate acid.

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