1. A student has prepared the following compounds in the lab. He measured the melting point of each one of them and recorded it in the following table (as "observed melting point"). Find out the actual melting point for each compound and compare it with the observed melting point. State if the student's compound is pure or impure, and why? Compound Observed Actual melting point /°C Pure or impure? Reason melting point 1°C Benzoic acid 121-123 Salicylic acid 142-146 Acetaminophen 166-171 Biphenyl 70-74

1. A student has prepared the following compounds in the lab. He measured the melting point of each one of them and recorded it in the following table (as "observed melting point"). Find out the actual melting point for each compound and compare it with the observed melting point. State if the student's compound is pure or impure, and why? Compound Observed Actual melting point /°C Pure or impure? Reason melting point 1°C Benzoic acid 121-123 Salicylic acid 142-146 Acetaminophen 166-171 Biphenyl 70-74

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...

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SC Score: 0 of 1 point Incorrect Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. Steam reforming of methane (CH4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. An industrial chemist studying this reaction fills a 75.0 L tank with 14. mol of methane gas and 5.8 mol of water vapor, and when the mixture has come to equilibrium measures the amount of carbon monoxide gas to be 2.3 mol. Calculate the concentration equilibrium constant for the steam reforming of methane at the final temperature of the mixture. Round your answer to 2 significant digits. Answer Submitted: A K = 18 Submitted: Mar 2 10:23 PM Correct Answer: 0.0033 Assignments List ! F @ Review Assignment Time Spent: 39m 5s # с $ MacBook Pro G Search or type URL % & + © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use |…
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