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Saved 3 attempts left Check my work Enter your answer in the provided box, Liquid methanol...
3 attempts loft Check my work Enter your answer in the provided box. A sample of carbon monoxide occupies 9.31 L at 293.0 K and 752 torr. Find its volume at-41°C and 413 torr.
3 attempts left Check my work Enter your answer in the provided box. What will be the final temperature of a 543-g sample of water, initially at 15.0°C, after 59.5 kJ have been added to it?
Saved 3 attempts left Check my work Enter your answer in the provided box. When 23.4 mL of 0.500 M H2SO4 is added to 23.4 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17ºC. Calculate AH of this reaction. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water.) (d for water =...
Saved 1 attempts left Check my work Enter your answer in the provided box. Hydrogen sulfide decomposes according to the following reaction, for which K. = 9.30 x 10-8 at 700°C: 2 H2S(g) = 2 H2(g) + S2(9) If 0.49 mol of H2S is placed in a 3.0-L container, what is the equilibrium concentration of Hz() at 700° C? 0.0056 M
3 attempts left Check my work Enter your answer in the provided box. Calculate AG for the reaction at 25°C. 2C6H61) + 1502(8) 12C028) + 6H20(1) agº = kJ AH° (kJ/mol Agº (kJ/mol) sº (J/K mol) 5.69 2.4 Substance C(graphite) C(diamond) CO(g) CO2(g) CO2(aq) C0,- (aq) O(g) O2(8) O3(aq) O3(8) H20(1) CH 1.90 -110.5 -393.5 -412.9 -676.3 249.4 2.87 --137.3 -394.4 -386.2 --528.1 230.1 0 16.3 163.4 -237.2 124.5 197.9 213.6 121.3 -53.1 160.95 205.0 110.88 237.6 -12.09 142.2 -285.8...
Saved 3 attempts left Check my work Enter your answer in the provided box. When 161.0 mL of water at 26.0°C is mixed with 91.0 mL of water at 85.0°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.) PC < Prex Nexo 7 of 14 W
Saved omework 2 attempts left Check my work Enter your answer in the provided box. Predict the enthalpy of reaction from the average bond enthalpies for the following reaction: 2CH() + 7026) + 4C02() + 6H2O(g) Bond Enthalpy (kJ/mol) H-H 436.4 H-0 460 C-H 414 C-C 347 CEC 620 C-O 351 1o-o 142 0= 498.7 C-0 745 C=0 (in carbon 799 dioxide) 557 al 11
Saved ork 2 attempts left Check my work Enter your answer in the provided box. In ice-cream making, the temperature of the ingredients is kept below 0.0°C in an ice-salt bath. Assuming that NaCl dissolves completely and forms an ideal solution, what mass of it is needed to lower the melting point of 4.3 kg of ice to -5.0°C?(Ky of water is 1.86°C/m.) The answer should be rounded to 2 significant figures.
3 attempts left Check my work Enter your answer in the provided box. If 26.45 mL of a standard 0.4573 M KOH solution reacts with 62.70 mL of CH3COOH solution, what is the molarity of the acid solution? м
3 attempts left Check my work Enter your answer in the provided box. Ethylene (CzH.) is the starting material for the preparation of polyethylene. Although typically made during the processing of petroleum, ethylene occurs naturally as a fruit-ripening hormone and as a component of natural gas. The heat of reaction for the combustion of C,H, is –1411 kJ/mol. How many grams of C-H, must burn to give 40.4 kJ of heat?