A 2.00 g sample of NH4NO3 was placed in an evacuated container and then heated so that it decomposed according to the following reaction: NH4NO3(s) ⇌ N2O(g) + 2H2O(g) At equilibrium, the total pressure in the container was found to be 8.34 bar. Find the value of K. Express your answer using three significant figures.

Use the standard reduction potentials located in the 'Tables' linked above to calculate the equilibrium constant for the reaction: Cu2+(aq) + 2Ag(s)  Cu(s) + 2Ag+(aq) Hint: Carry at least 5 significant figures during intermediate calculations to avoid round off error when taking the antilogarithm.  Equilibrium constant: ____ G° for this reaction would be _________greater/ less  than zero.

Practice Intelligent Tutoring Exercise 10.026 Sulfur dioxide and oxygen react according to the equation 2502(g) + O2(g) → 2503(g) If 47.7 g of SO2(g) is added to a flask resulting in a pressure of 0.532 atm, what will be the total pressure in the flask when a stoichiometric amount of oxygen is added? The total pressure of SO2 and O2 = atm

The equilibrium constant, Ke, for the following reaction is 1.80×10-² at 698 K. 2HI(g) H2(g) + I,(g) Calculate the equilibrium concentrations of reactant and products when 0.294 moles of HI are introduced into a 1.00 L vessel at 698 K. [HI] M [H2] M [IL] M

4) Given the same concentrations, the reaction CO(g) + Cl2(g)→ COCI2(g) at 250°C is 1.50 x 10° times as fast as the same reaction at 150°C. Calculate the energy of activation (as kJ/mol) for this reaction. Assume that the frequency factor is constant. (R: 8.314 J/mol.K)

From the standard enthalpy of formation of atomic hydrogen (h). from the standard enthalpies of formation, calculate the delta H rxn for the reaction. C6H12(l) + 9O2(g) = 6CO2(g) + 6H2O(l) For C6H12(l), delta H degrees farenheight= -151.9 kJ/mol

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1. Water Quality Analysis - A public utility announces the monthly average concentrations of several ionic species in the drinking water. The list is given below (atomic weights are given in parentheses): Calcium (40) = 8.6 mg/L Magnesium (24)=0.77 mg/L Potassium (39) = 0.64 mg/L Sodium (23) = 3.7 mg/L a) What is the ratio of [HCO3]/[CO3²] in this water Chloride (35.5) -3.0 mg/L Fluoride (19)- 0.84 mg/L Sulfate (S-32; O=16)= 3.4 mg/L pH=8.46

The rate of decomposition of SO, Cl2 according to the reaction so,Cl, (s) → SO2(g) + Cl2 (g) can be followed by monitoring the total pressure in the reaction vessel. Consider the following data. Time (s) Total Pressure (torr) 491.7 180.9 548.7 434.0 618.4 605.7 659.1 916.7 721.7 1233.3 773.0 1504.9 809.0 2015.2 860.7 Convert these total pressures into changes in the pressure of the SO, Cl, manipulate the data as needed, and then use a graphing calculator or spreadsheet to plot the data to determine the order of the reaction and the rate constant. What is the order of the reaction? O zero-order O frst-order O second-order Determine the value and unit of the rate constant. (Enter an unrounded value.) k =

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