1. Calculate Eº and give the proper balanced redox equation for each of the following: a. Ag Agt|Fe³+ | Fe2+ b) Al Al³+ || Mn2+ | Mn 2. Is the following reaction spontaneous at 50°C? Cu (0.20M)| Cu²+ (0.04M)| Fe³+ (0.13M) | Fe²+ (0.29M) 3. What current is required to produce 500 grams of Al (27 grams/mole) metal in 3 days from the electrolysis of Al₂O3. Al₂O3 + 6H +6e-2A1+ 3H₂O 4. What is the activity of a 1 gram sample of ¹311? (11/2= 3.38 x 104 seconds) 5. Polonium-238 has a half life of 14.3 days. How long will it take for only 10% of a sample of 238P to remain? tion:

1. Calculate Eº and give the proper balanced redox equation for each of the following: a. Ag Agt|Fe³+ | Fe2+ b) Al Al³+ || Mn2+ | Mn 2. Is the following reaction spontaneous at 50°C? Cu (0.20M)| Cu²+ (0.04M)| Fe³+ (0.13M) | Fe²+ (0.29M) 3. What current is required to produce 500 grams of Al (27 grams/mole) metal in 3 days from the electrolysis of Al₂O3. Al₂O3 + 6H +6e-2A1+ 3H₂O 4. What is the activity of a 1 gram sample of ¹311? (11/2= 3.38 x 104 seconds) 5. Polonium-238 has a half life of 14.3 days. How long will it take for only 10% of a sample of 238P to remain? tion:

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Temperature differences on the Rankine scale are identical to differences on the Fahrenheit scale, but absolute zero is given as 0°R. (a) Find a relationship converting the temperatures TF of the Fahrenheit scale to the corresponding temperatures TR of the Rankine scale. TR = (b) Find a second relationship converting temperatures TR of the Rankine scale to the temperatures TK of the Kelvin scale. TK =
Cl₂(g) + 2e Cr₂0 (aq) + 14 H(aq) + 6€¯ O2(g) +4 H(aq) + 4e¯ MnO2(s) + 4H(aq) + 2e¯ 10, (aq) +6H(aq) +5e¯ VO₂+ (aq) + 2H(aq) + e¯ Br₂(1) + 2e NO, (aq) +4 H(aq) + 3e¯ ClO2(g) + e 2 Cl(aq) Ag* (aq) + e Fe3+(aq) + e 2 Cr³+ (aq) + 7 H₂O(1) 1.36 1.33 2 H₂O(1) 1.23 Mn2+(aq) + 2 H₂O(1) 1.21 12(aq) + 3H2O(l) 1.20 VO²+(aq) + H₂O(1) 1.00 2 Br (aq) 1.09 NO(s) + 2 H2O(1) 0.96 CIO₂ (aq) 0.95 Ag(s) 0.80 Fe2+(aq) 0.77 What is the E° cell for the reaction Cr₂O²² + CIO₂ → Cr³+ + CIO₂? a. 2.28 V. b. -2.28 V. c. 0.38 V. d. -0.38 V.
An electric current of 481.0 mA transports 530. uC of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 X H 8 S
What is the mean of the values 8.9, 9.0, 4.0, 7.0, and 3.0? Give your answer to the first decimal place.
Perform the calculations and determine the absolute and percent relative uncertainty. Express each answer with the correct number of significant figures. To avoid rounding errors, do not round your answers until the very end of your calculations. [9.8 (+0.3) - 2.31 (+0.01)] 8.5 (+0.6) absolute uncertainty: + percent relative uncertainty: + 8 9.2 (+0.4) × ([5.4 (±0.3) × 10−³] + [5.6 (±0.1) × 10−³]) = absolute uncertainty: ± 0.005 percent relative uncertainty: + % %
what is the average time of these 4 times? 2:min 46sec 2min 52sec 3min 37sec 3min 54sec
35.6m to ft
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of chloroform, ethanolamine, dimethyl sulfoxide, pentane, and carbon tetrachloride. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid chloroform density 1.5 g cm 3 ethanolamine 1.0 g-cm dimethyl sulfoxide 1.1 g cm pentane 0.63 g-cm carbon tetrachloride 1.6 g-cm Next, the chemist measures the volume of the unknown liquid as 0.688 L and the mass of the unknown liquid as 543. g. Calculate the density of the liquid. Round your answer to 3 significant digits. Given the data above, is it possible to identify the liquid? If it is possible to identify the liquid, do so. gcn cm yes no chloroform ethanolamine dimethyl sulfoxide pentane carbon tetrachloride X 5…
AgBr AgCl Ag₂ CrO4 5.35x10-13 1.77x10-10 1.12×10-12
Calculate the equilibrium constant for each of the reactions at 25°C. Standard Electrode Potentials at 25 °C Reduction Half-Reaction E° (V) Fe+(aq) + 3 e → Fe(s) -0.036 Sn²+ (aq) + 2 e → Sn(s) -0.14 2+ Cu" (ag) + 2 е — Cu(s) 0.16 O2 (g) + 2 H2O(1) +4 e¯ →4 OH (aq) 0.40 Cl2(9) + 2 е —2 CI 1.36 I2(s) + 2 e → 2 1 0.54
The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.
14.3462 +2.55 Express your answer in appropriate significant figures. — ΑΣΦ ftermitte ΠΡΕΠΕΙ Ν