Consider the reaction, N204(g) = 2 NO2(g) where the value for Ke is 1.7 x 10-6. The initial concentration of N204 is 0.448 M. What is the concentration (molarity) of NO2 at equilibrium? Report your answer to two decimal places using scientific notation.

A) A student completely dissolves 5.16 mol of Ca(OH)2 in water. i) Which equation is the dissociation equation for Ca(OH), in water? (Give the letter choice)| A. Ca(OH) 2 (s) + H 20 ---> CaO(aq) + O 2 (g) + 2 H 2 (g) С. Са(ОН) 2 (s) --> Са 2+ (aq) + 20 2- (aq) + 2H * (aq) В. Cа(ОН) 2 (s) ---> Са 2" (аq) + 2 ОН (аq) D. Ca(ОН) 2 (s) --> CаН 2 (aq) + O 2 (g) ii) How many total moles of ions are released from the 5.16 mol of Ca(OH)2 ? mol of ions B) A sample of FeCl3 is completely dissolved in water. i) Which is the dissociation equation for FeCl3 in water? (Give the letter choice) A. FeCl 3 (s) + H 20 ---> FeCl 2 (aq) + HCI(aq) + OH (aq) C. FeCl (s) ---> Fe 3+ (aд) + Cl 2 (aq) + Cl (aq) 3 В. FeCl 3 (s) + Н20 ---> FEHCI (aq) + ОН " (aq) D. FeCl 3 (s) ---> Fe 3+ (ад) + 3 CI (аq) ii) How many total moles of ions are released if 5.71 x1019 formula units of FeCl3 were completely dissolved? (NOTE: Write answer in sci. notation using "E" or "e" to replace "x 10" & do NOT leave any space between…

N2(g) + 3H2(g) = 2NH3(g) With reference to this chemical reaction, what is the effect of decreasing the concentration of NH3(g) on the equilibrium?   Question 35 options:   Equilibrium shifts to the right and then to the left.   Equilibrium shifts to the left.   Equilibrium shifts to the right.   There is no effect on the equilibrium.

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