Chemical Principles
Chemical Principles
8th Edition
ISBN: 9781305581982
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 2, Problem 7DQ
Interpretation Introduction

Interpretation:The best source of nicotinic acid and its corresponding reason to be used in a multivitamin tablet is to be stated.

Concept introduction: Nicotinic acid also addressed as niacin is one of an essential organic compound with the molecular formula C6H5NO2 .It is obtained from several food sources. It has several medical uses although it has some adverse effects also.Vitamin B3 is its form which serves as an important nutrient for humans.

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The vitamin niacin (nicotinic acid, C6H5NO2) can be isolated from a variety of naturalsources such as liver, yeast, milk, and whole grain. It also can be synthesized fromcommercially available materials. From a nutritional point of view, which source ofnicotinic acid is best for use in a multivitamin tablet? Why?
At first, it seemed like the poisoned Russian agent might have ingested thallium in the form of thallium(I) sulfate, a rodenticide (rat poison), not allowed in the US and Western countries but still used in other countries.  Thallium leads to hair loss.  It also replaces potassium in important enzymes in the brain, muscles and skin.  It takes 8.0 x 102 mg of thallium ion to kill an average adult.  It took a bit of investigating to figure out that the agent was actually poisoned by polonium, a radioactive element, harmful only if it goes into the body.  The radioactivity emitted by polonium, alpha particles, can be stopped by skin; but, if ingested, it gets into the blood stream, travels to organs and does lots of damage.  The maximum safe body amount of polonium is 7 pg (picograms!)  The agent was apparently poisoned with about 10 micrograms.  To provide the minimum amount of thallium to kill the average adult, how many mL of 0.45 M solution of thallium(I) sulfate needs to be ingested?…
clete ال Me o + e A + Co₂ Et ||| CHO cHo - دو ۸۸۰۸+vi -

Chapter 2 Solutions

Chemical Principles

Ch. 2 - What refinements had to be made in Dalton’s...Ch. 2 - Which (if any) of the following can be determined...Ch. 2 - The average mass of a carbon atom is 12.011....Ch. 2 - Which of the following explain how an ion is...Ch. 2 - Prob. 15DQCh. 2 - Prob. 16DQCh. 2 - Why is calcium dichloride not the correct...Ch. 2 - Explain the law of conservation of mass, the law...Ch. 2 - Prob. 19ECh. 2 - When mixtures of gaseous H2 and gaseous Cl2 react,...Ch. 2 - Observations of the reaction between nitrogen gas...Ch. 2 - Prob. 22ECh. 2 - Hydrazine, ammonia, and hydrogen azide all contain...Ch. 2 - Consider 80.0-g samples of two different compounds...Ch. 2 - Early tables of atomic weights (masses) were...Ch. 2 - What evidence led to the conclusion that cathode...Ch. 2 - Prob. 27ECh. 2 - Prob. 28ECh. 2 - A chemist in a galaxy far, far away performed the...Ch. 2 - Do the proton and the neutron have exactly the...Ch. 2 - Consider Ernest Rutherford’s a-particle...Ch. 2 - Distinguish between the following terms. a....Ch. 2 - What is the distinction between atomic number and...Ch. 2 - Prob. 34ECh. 2 - a. List the noble gas elements. Which of the noble...Ch. 2 - Consider the elements of the carbon family: C, Si,...Ch. 2 - Prob. 37ECh. 2 - The number of protons in an atom determines the...Ch. 2 - For lighter, stable isotopes, the ratio of the...Ch. 2 - For each of the following sets of elements, label...Ch. 2 - Prob. 41ECh. 2 - Write the atomic symbol (ZAX) for each of the...Ch. 2 - Prob. 43ECh. 2 - Prob. 44ECh. 2 - Prob. 45ECh. 2 - Prob. 46ECh. 2 - Would you expect each of the following atoms to...Ch. 2 - Prob. 48ECh. 2 - The compounds AlCl3,CrCl3,andICl3 have similar...Ch. 2 - Each of the following compounds has three...Ch. 2 - Prob. 51ECh. 2 - Prob. 52ECh. 2 - Prob. 53ECh. 2 - Prob. 54ECh. 2 - Prob. 55ECh. 2 - Prob. 56ECh. 2 - Prob. 57ECh. 2 - Prob. 58ECh. 2 - Prob. 59ECh. 2 - Prob. 60ECh. 2 - Prob. 61ECh. 2 - Prob. 62AECh. 2 - Prob. 63AECh. 2 - What discoveries were made by J. J. Thomson,...Ch. 2 - Prob. 65AECh. 2 - Prob. 66AECh. 2 - A sample of chloroform is found to contain 12.0 g...Ch. 2 - In a reaction, 34.0 g of chromium(III) oxide...Ch. 2 - Prob. 69AECh. 2 - Prob. 70AECh. 2 - Prob. 71AECh. 2 - Prob. 72AECh. 2 - Prob. 73AECh. 2 - Prob. 74AECh. 2 - Prob. 75AECh. 2 - Prob. 76AECh. 2 - Prob. 77AECh. 2 - Prob. 78AECh. 2 - Prob. 79AECh. 2 - Identify each of the following elements. a. a...Ch. 2 - A certain element has only two naturally occurring...Ch. 2 - Prob. 82AECh. 2 - Which of the following is(are) correct? a. 40Ca2+...Ch. 2 - Prob. 84AECh. 2 - Prob. 85AECh. 2 - Complete the following table to predict whether...Ch. 2 - Which of the following statements is(are) correct?...Ch. 2 - Prob. 88CPCh. 2 - Each of the statements below is true, but Dalton...Ch. 2 - You take three compounds, each consisting of two...Ch. 2 - Two elements, R and Q, combine to form two...Ch. 2 - A single molecule has a mass of 7.3110223g ....Ch. 2 - A combustion reaction involves the reaction of a...Ch. 2 - You have two distinct gaseous compounds made from...Ch. 2 - You have gone back in time and are working with...
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