Answered: For the Kinetics – The Iodine Clock…

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter8: Nuclear Chemistry

Section: Chapter Questions

Problem 10E

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Consider the accompanying diagram. Ball A is allowed to fall and strike ball B. Assume that all of ball As energy is transferred to ball B at point I, and that there is no loss of energy to other sources. What is the kinetic energy and the potential energy of ball B at point II? The potential energy is given by PE = mgz, where m is the mass in kilograms, g is the gravitational constant (9.81 m/s2), and z is the distance in meters.
Use the diagram below to answer Questions 8 and 9. Which sample could contain particles of magnesiumfluoride? A. a B. b C. c D. Both a and b
A chemical reaction proceeds according to this law: The amount of the unconverted is proportional to the square of the amount present. Initially, 100 grams is present. After 30 seconds, 1/3 of it is was remained unconverted. What will be the amount after 1 minute?
Use the References to access important values if needed for this question. The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The half-life of phosphorus-32 is 14.3 days. If you begin with 60.3 milligrams of phosphorus-32, how many milligrams will you have left after 28.6 days have passed? mg Submit Answer Retry Entire Group 9 more group attempts remaining
The half-life for the radioactive decay of C−14 is 5730 years.How long will it take for 21% of the C−14 atoms in a sample of C−14 to decay? Express your answer to three significant figures.
If we start with a 50.0-g sample, how much remains after three half-lives have passed?
1. The amount of phosphorus present in a sample at a given time is given by the following equation:?? = ?0?−0.03?What percent of the initial amount of phosphorus is left after 25 days of decay?2. If there are 37 kg of the element left after 25 days, in problem no. 1, what was the initial amount of the element? round off final answers to four decimal places. complete solution
Chemists found that a complex reaction occurred in three steps. The first step takes 2.5731 × 1 0 2 s to complete, the second step takes 3.60 × 1 0 -1 s, andthe third step takes 7.482 × 1 0 1 s. What is the total amount of time elapsed during the reaction?A. 3.68 × 1 0 1 sB. 7.78 × 1 0 1 sC. 1.37 × 1 0 1 sD. 3.3249 × 1 0 2 s
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Suppose you start a chemical reaction with 23 moles of hydrogen peroxide, and that after 5 minutes only 4 moles remain. Assuming the reaction decays exponentially, what is its half-life?
19. Decomposition of Sucrose Reacting with water in an acidic solution at 35°C, sucrose (C12H22011) decomposes into glucose (CH1,0,) and fructose (C,H1,0,)* according to the law of uninhibited decay. An initial amount of 0.40 mole of sucrose decomposes to 0.36 mole in 30 minutes. How much sucrose will remain after 2 hours? How long will it take until 0.10 mole of sucrose remains?
What is the mass percent of concentrated aqueous HCl (11.8 M)? The solution has a density of 0.909 g/mL. (Chapter 14)

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For the Kinetics – The Iodine Clock Reaction experiment, list out the glassware, tools, equipment and other materials used for this experiment. Be specific.