points attempts left Check my work Enter your answer in the provided box. -1 The rate...
Question 8 (of 20) value: 5.00 points 3 attempts left Check my work Enter your answer in the provided box. The rate constant of a first-order reaction is 3.85 x 10-4 s-1 at 350.0C If the activation energy is 129 kJ/mol, calculate the temperature at which its rate constant is 9.60 x10s-1 References eBook & Resources Multipart Answer
1.00 points 3 attempts left Check my work 2 Enter your answer in the provided box. The rate constant for the second-order reaction: 2NOBr(g) → 2NO(g) + Br2(g) is 0.800-s) at 10°C. Starting with a concentration of 0.86 M, calculate the concentration of NOBr Report problem Hint Solution Guided Solution after 67 s. Be sure to report your answer to the correct number of significant figures. References eBook &Resources
WILL GIVE THUMBS UP 3 attempts left Check my work Enter your answer in the provided box. points A sample of 0.5760 g of an unknown compound containing barium ions (Ba) is dissolved in water and treated with an excess of Na,C0y. If the mass of the BaCO, precipitate formed is 0.5343 . what is the percent by mass of Ba in the original unknown compound? ebook Print References 3 attempts left Check my work Enter your answer in the...
3 attempts left Check my work Enter your answer in the provided box Calculate AH nxn for the following: points eBook CH4(%) + Ch) CC14() + HCl() (unbalanced] Ask Print References AH ICH,®) =-74.87 kJ/mol AH CCu(e) = -96.0 kJ/mol AH (CC140) = -139 kJ/mol AH (HCI@)] = -92.31 kJ/mol AH (HCl(aq)] = -167.46 kJ/mol AH (C1(2)) = 121.0 kJ/mol Prev 8 of 15 H N
3 attempts left Check my work Enter your answer in the provided box. The reaction 2A B is first order in A with a rate constant of 2.8 X 10 Sat 80°C. How long in seconds) will it take for A to decrease from 0.750 M to 0.110 M?
JU points '14 attempts left Check my work Enter your answer in the provided box. Consider the thermal decomposition of CaCO3: CaCO3(s) = CaC(s) + CO2(8) The equilibrium vapor pressures of CO2 are 22.6 mmHg at 700°C and 1829 mmHg at 950°C. Calculate the standard enthalpy of the reaction. II kJ/mol
Enter your answer in the provided box. The rate constant of a first-order reaction is 2.35 x 10-45-1 at 350.°C. If the activation energy is 135 kJ/mol, calculate the temperature at which its rate constant is 9.00 x 10-45-1. °c
6 2 attempts left Check my work 6.66 points Enter your answer in the provided box. Sports trainers treat sprains and soreness with ethyl bromide. It is manufactured by reacting ethylene with hydrogen bromide: 11 + H- Print H References Use bond energies to find the enthalpy change for this reaction. kJ Average Bond Energies Bond Bond Enthalpy (kJ/mol) 432 C-c 347 614 cuc 839 CH 413 C-Br 276 Br-Br 193 H-Br 363
10 attempts left Check my work Enter your answer in the provided box. What will be the final temperature of a 625 g sample of water, initially at 16.0°C, after 61.5 kJ have been added to it?
2 attempts left Check my work Enter your answer in the provided box. The energy content of raisin bread is 13.1 kJ/g. Calculate the temperature increase when a slice of raising bread (34.0 g) is burned in the calorimeter. The heat capacity of the calorimeter is 38.77 kJ°C.