Chapter 6 Homework 0 2 atempts left Check my work Enter your answer in the provided...
Enter your answer in the provided box. Calculate q when 14.5 g of ice is cooled from -22.2°C to -90.5°C (Cice = 2.087 J/g.K)?
Enter your answer in the provided box. Calculate q when 25.5 g of ice is cooled from -20.0°C to -97.1°C (Cice = 2.087 J/g•K)? 4.103 %
Chapter 4 Homework 0 13 2 attempts left Check my work Be sure to answer all parts. Report problem 6.66 points In a combination reaction, 1.58 of lithium is mixed with 6,77 of oxygen. Guided Solution (a) Which reactant is present in excess! Print Reference oxygen (b) How many moles of product are formed? roduct are present (c) After the reaction, how many grams of each reactant an gLi 0; g Lio
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
5 attempts left Check my work Enter your answer in the box provided. Report problem The [a] of pure quinine, an antimalarial drug, is -165. If a solution contains 64% quinine and 36% of its enantiomer (ee = 28%), what is (a) for the solution? Hint points (8 03:48:59 Solution Guided Solution eBook HO H References CH30 quinine (antimalarial drug) [a] =>
Chapter 5 Chemical Reactions Saved 13 3 attempts left Check my work Enter your answer in the provided box. Report problem Using the balanced equation for fermentation answer the following question. Hint points C6H1206(aq) 2 C2H0(aq)+ 2 Co2() Solution glucose ethanol Guided Solution eBook How many grams of CO2 are formed from 0.40 mol of glucose?" gCO2 Print References 10
5.00 points 5 atempts let Check my work Enter your answer in the provided box. A quantity of 2.30 x 102 mL of 0.650 M HNO, is mixed with 2.30 x 10 mL of 0.325 M Ba(OH), in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of both solutions is the same at 18.46°C. The heat of neutralization when 1.00 mol of HNOj reacts with 0.500 mol Ba(OH) is-56.2 kJ/mol. Assume that the densities and specific heats of...
5 attempts left Check my work Enter your answer in the box provided. Report problem The fal of pure quinine, and an antimalarial drug, is -165. If a solution contains 85% quinine and 15% of its enantiomer, what is the ee of the solution? Hint points Solution (8 03:56:38 Guided Solution eBook HOEN H" References CH30 a quinine (antimalarial drug) % ee
10 homework Question 13 (of 25) 4.00 points 3 atempts left C Check my work Enter your answer in the provided box. A 40.0-g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing 90.0 g of water at 24.0°C. The final temperature of the system was found to be 25.4°C. Calculate the specific heat of the metal. (The heat capacity of the calorimeter is 13.4 Jr C) 2 4 5 6 8
3 attempts left Check my work Enter your answer in the provided box. An old piece of wood has a carbon-14 content of 0.0156 times that of a freshly cut piece of wood. What is the age of the old wood if the half-life of C is 5,736 years? Report prol Hint Solution years old Guided Solutio