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MISSED THIS? Read Section 14.6 (Pages 601 - 613); Watch KCV 14.6, IWE 14.9. Calculate the...
Part A MISSED THIS? Read Section 19.6 (Pages 863 - 867); Watch KCV 19.6, IWE 19.4. , T = 291 K Calculate the change in Gibbs free energy for each of the following sets of AHFxn, ASixn, and T. (Assume that all reactants and products are in their standard states.) AHEX= -90. KJ, ASPX -146 J/K Express your answer as an integer. Be OID ? AG fxn= kJ Submit Previous Answers Request Answer * Incorrect; Try Again; 4 attempts remaining...
Calculate the freezing point and boiling point of a solution containing 17.4 g of naphthalene (C10H8) in 112.0 mL of benzene. Benzene has a density of 0.877 g/cm3. Part A Calculate the freezing point of a solution. (Kf(benzene)=5.12∘C/m.) Part B Calculate the boiling point of a solution. (Kb(benzene)=2.53∘C/m.)
MISSED THIS? Read Section 4.3 (Pages 145-149); Watch KCV 4.3, IWE 4.4 Part A Hydrobromic acid dissolves solid iron according to the followiaung reaction What mass of HBr (in g) would you need to dissolve a 3.4-g pure iron bar on a padlock? Express your answer using two significant figures. View Available Hint(s) m Submit
MISSED THIS? Read Section 7.4 (Pages 272-278), 7.6 (Pages 281-284); Watch KCV 7.4, 7.6, IWE 7.2, 7.7. Natural gas burns in air to form carbon dioxide and water, releasing heat. CH&(g) +O2(g)->CO2(g) + H20(g) AH 802.3kJ What minimum mass of CH4 is required to heat 50.0 g of water by 24.0 °C? (Assume 100% heating efficiency) (For water.C 4.18 J/g "C). o 10.0 g e 0.100 g o 9.97 g 2.50 x 10 g Request Answer Submit
21. Calculate the molarity of each solution MISSED THIS? Read Section 5.2; Watch KCV 5.2, IWE 5.1 a. 3.25 mol of LiCl in 2.78 L solution b. 28.33 g CH12O6 in 1.28L of solution c. 32.4 mg Na Cl in 122.4 mL of solution
MISSED THIS? Read Section 15.3 (Pages 637-642); Watch KCV 15.3, IWE 15.2. Experimental data for the reaction 2NO2(g) + F2(g) + 2NO2F(g) are given in the table below. (NO2) (M) (F2] (M) Initial rate (M/s) 0.100 0.100 0.026 0.200 0.100 0.051 0.200 0.200 0.103 0.400 0.400 0.411 Part A Enter an expression for the reaction rate law. Express your answers in terms of k, (NO2), and (F2). View Available Hint(s) IVO AQ R O O ? rate = Submit
MISSED THIS? Read Section 7.4 (Page), Watch KCV 7.4, IWE 7.3 Part A A silver block, initially at 60.0 °C, is submerged into 100.0 g of water at 24.8 °C in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 26.7 °C. The specific heat capacities for water and silver are water-4.18 J/( 8°C) and C ilver 0.235J/(8.°C). What is the mass of the silver block? Express your answer to two significant figures and include...
MISSED THIS? Read Section 4.3 (Pages 145 - 149): Watch KCV 4.3, IWE 4.4. Hydrobromic acid dissolves solid iron according to the following reaction: Fe(s) + 2HBr(aq) + FeBrz(aq) + H (E) = 0.12 mol HBO Then, use the molar mass of HBr (80.9 g/mol) as a conversion factor between th of HBr mass HBr = mol HBr x molar mass of HB = 0.12 mol HBr x 80.9 g HB = 9.9 g HB 1 mol HBF Part B...
MISSED THIS? Read Section 7.4 (Pages 276 - 278); Watch KCV 7.4, IWE 7.3 Two substances, A and B. which are of equal mass but at different temperatures, come into thermal contact. The specific heat capacity of substance B is three times larger than the specific heat capacity of substance Which statement is true of the temperature of the two substances when they reach thermal equilibrium? (Assume no heat loss other than the thermal transfer between the substance The final...
MISSED THIS? Read Section 16.6 (Pages 696-699); Watch IWE 16.5. Consider the following reaction: S02Cl2 (g) SO2(g) + Cl2 (g) A reaction mixture is made containing an initial [SO2Cl2] of 2.3x10-2 M. At equilibrium, [Cl2] = 1.3x10-2 M Part A Calculate the value of the equilibrium constant (Ke). Express your answer to two significant figures. νη ΑΣφ ? Request Answer Submit Provide Feedback