GENERAL CHEMISTRY-SOLUTIONS MANUAL
11th Edition
ISBN: 9780132925044
Author: Petrucci
Publisher: PEARSON
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Chapter 2, Problem 47E
The three naturally occurring isotopes of potassium are
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GENERAL CHEMISTRY-SOLUTIONS MANUAL
Ch. 2 - When an iron object rusts, its mass increases....Ch. 2 - When a strip of magnesium metal is burned in air...Ch. 2 - A 0.406 g sample of magnesium reacts with oxygen,...Ch. 2 - A 1.446 g sample of potassium reacts with 8.178 g...Ch. 2 - When a solid mixture consisting of 10.500 g...Ch. 2 - Within the limits of experimental error, showthat...Ch. 2 - In Example 2-1, we established flat the mass ratio...Ch. 2 - Samples of pure carbon weighing 3.62, 5.91, and...Ch. 2 - In one experiment sodium was allowed to react with...Ch. 2 - When 3.06 g hydrogen was allowed to react with an...
Ch. 2 - In one experiment, he burning of 0.312 g sulfur...Ch. 2 - In one experiment, the reaction of 1.00 g mercury...Ch. 2 - Sulfur forms two compounds with oxygen. In...Ch. 2 - Phosphorus forms two compounds chlorine.In be...Ch. 2 - The following data were obtained for compounds of...Ch. 2 - The following data were obtained for compounds of...Ch. 2 - There two oxide of copper. One oxide has 20%...Ch. 2 - The two oxides of carbon described on page 38 were...Ch. 2 - The following observations were made for a series...Ch. 2 - In an experiment similar to that described in...Ch. 2 - Prob. 21ECh. 2 - Prob. 22ECh. 2 - The following radioactive isotopes have...Ch. 2 - For the isotope H202g , express the percentage of...Ch. 2 - Complete the following table. What minimum amount...Ch. 2 - Arrange the following species order of increasing...Ch. 2 - For the atom 108Pd with mass 107.90389 u,...Ch. 2 - For the ion R225a24 with a mass of 228.030 u,...Ch. 2 - An isotope of silver has a mass that is 6.68374...Ch. 2 - Prob. 30ECh. 2 - The following data on isotopic masses are from a...Ch. 2 - The following ratios of masses were obtained with...Ch. 2 - Which of the following species has a. equal...Ch. 2 - Prob. 34ECh. 2 - An isotope with mass numbers 44 has four more...Ch. 2 - Identify the isotope X that has one more neutron...Ch. 2 - Iodine has many radioactive isotopes.Iodine-123 is...Ch. 2 - Iodine-131 is a radioactive isotope that has...Ch. 2 - Americium-241 is aradioactive isotope that is used...Ch. 2 - Some foods are made safer to eat by being exposed...Ch. 2 - Which statement is probably true concerning the...Ch. 2 - The mass of e carbon-12 atom is taken to be...Ch. 2 - Magnesium has three naturally occurring isotopes....Ch. 2 - There are four naturally occurring isotopes of...Ch. 2 - The two naturally occurring isotopes of silver...Ch. 2 - Gallium has two naturally occurring isotopes. One...Ch. 2 - The three naturally occurring isotopes of...Ch. 2 - Use the conventional atomic mass of boron to...Ch. 2 - A mass spectrum of germanium displayed peaks at...Ch. 2 - Prob. 50ECh. 2 - Refer to the periodic table inside the front cover...Ch. 2 - Refer to the periodic table inside the front cover...Ch. 2 - Prob. 53ECh. 2 - Prob. 54ECh. 2 - Prob. 55ECh. 2 - Prob. 56ECh. 2 - Determine a. the number of moles of Zn in a 415.0...Ch. 2 - Determine a. the number of Kr atoms in a 5.25 mg...Ch. 2 - How many Cu atoms are present in a piece of...Ch. 2 - How many atoms are present in a 50.0 cm2 sample of...Ch. 2 - How many 204Pb atoms are present in a piece of...Ch. 2 - A particular lead-cadmium alloy is 8.0% cadmium by...Ch. 2 - Prob. 63ECh. 2 - During a severe episode of air pollution, the...Ch. 2 - Without doing detailed calculations, determine...Ch. 2 - Prob. 66ECh. 2 - A solution was prepared by dissolving 2.50 g...Ch. 2 - Prob. 68IAECh. 2 - Fluorine has a single atomic species, 19F ....Ch. 2 - Prob. 70IAECh. 2 - Use the fundamental definitions and statements...Ch. 2 - In each case, identify the element in question. a....Ch. 2 - Determine the only possible +2 ion for which the...Ch. 2 - Prob. 74IAECh. 2 - Suppose we redefined the atomic mass scale by...Ch. 2 - The two naturally occurring isotopes of nitrogen...Ch. 2 - Prob. 77IAECh. 2 - Germanium has three major naturally occurring...Ch. 2 - From densities of the lines in the mass spectrum...Ch. 2 - The two naturally occurring isotopes of chlorine...Ch. 2 - How many atoms are present in a 1.50 m length of...Ch. 2 - Monel metal is a corrosion-resistant copper-nickel...Ch. 2 - Deuterium, 2H(2.0140u) , is sometimes used to...Ch. 2 - An alloy that melts at about the boiling pointof...Ch. 2 - A particular silver solder (used in the...Ch. 2 - Prob. 86IAECh. 2 - Prob. 87IAECh. 2 - Atoms are spherical and so when silver atoms pack...Ch. 2 - The data Lavoisier obtained in the experiment...Ch. 2 - Prob. 90FPCh. 2 - Prob. 91FPCh. 2 - German chemist Fritz Haber proposed paying off the...Ch. 2 - Mass spectrometry is one of the most versatile and...Ch. 2 - In your own words, define or explain these terms...Ch. 2 - Briefly describe a. the law of conservation of...Ch. 2 - Explain the important distinctions between each...Ch. 2 - A certain element contains one atom of mass 10.013...Ch. 2 - When 10.0 g zinc and 8.0 g sulfur are allowed to...Ch. 2 - Prob. 99SAECh. 2 - An attempt was made to determine he atomic mass of...Ch. 2 - Cathode rays a. may be positively or negatively...Ch. 2 - The scattering of a particles by thin metal foils...Ch. 2 - Prob. 103SAECh. 2 - Which of the following is not a fundamental...Ch. 2 - Which of the following scientists did not...Ch. 2 - Prob. 106SAECh. 2 - Prob. 107SAECh. 2 - Prob. 108SAECh. 2 - Prob. 109SAECh. 2 - The two species that have the same number of...Ch. 2 - Prob. 111SAECh. 2 - Prob. 112SAECh. 2 - A 5.585-kg sample of iron (Fe) contains a.10.0...Ch. 2 - A 91.84 g sample of Ti contains (a) 4.175 mol of...Ch. 2 - There are three common iron-oxygen compounds. The...Ch. 2 - The four naturally occurring isotopes of strontium...Ch. 2 - Prob. 117SAECh. 2 - Prob. 118SAE
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- The element europium exists in nature as two isotopes: 151Eu has a mass of 150.9196 u and 153Eu has a mass of 152.9209 u. The average atomic mass of europium is 151.96 u. Calculate the relative abundance of the two europium isotopes.arrow_forwardNeon has three stable isotopes, one with a small abundance. What are the abundances of the other two isotopes? 20Ne, mass = 19.992435 u; percent abundance = ? 21Ne mass = 20.993843 u; percent abundance = 027% 22Ne mass = 21.991383 u: percent abundance = ?arrow_forwardStrontium has four stable isotopes. Strontium-84 has a very low natural abundance, but 86Sr, 87Sr, and 88Sr are all reasonably abundant. Knowing that the atomic weight of strontium is 87.62, which of the more abundant isotopes predominates?arrow_forward
- Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law of multiple proportions. If the formula of the second compound is RQ, what is the formula of the first compound?arrow_forwardThe average atomic masses of some elements may vary, depending upon the sources of their ores. Naturally occurring boron consists of two isotopes with accurately known masses ( 10B, 10.0129 amu and 11B, 11.0931 amu). The actual atomic mass of boron can vary from 10.807 to 10.8 19, depending on whether the mineral source is from Turkey or the United States. Calculate the percent abundances leading to the two values of the average atomic masses of boron from these two countries.arrow_forwardClick on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible. 21. Repeat Exercise 2.20 using an element that has three naturally occurring isotopes.arrow_forward
- A mass spectrometer determines isotopic masses to eight or nine significant digits. What limits the atomic mass of carbon to only five significant digits?arrow_forwardClick on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible.arrow_forwardThere are 1.699 1022 atoms in 1.000 g of chlorine. Assume that chlorine atoms are spheres of radius 0.99 and that they are lined up side by side in a 0.5-g sample. How many miles in length is the line of chlorine atoms in the sample?arrow_forward
- Argon has three naturally occurring isotopes: 0.3336% 36Ar, 0.063% 38Ar, and 99.60% 40Ar. Estimate the average atomic mass of argon. If the masses of the isotopes are 35.968 u, 37.963 u, and 39.962 u, respectively, calculate the average atomic mass of natural argon.arrow_forwardCalculate the atomic mass of each of the following elements using the given data for the percentage abundance and mass of each isotope. a. Silver: 51.82% 107Ag (106.9 amu) and 48.18% 109Ag (108.9 amu) b. Silicon: 92.21% 28Si (27.98 amu), 4.70% 29Si (28.98 amu), and 3.09% 30Si (29.97 amu)arrow_forwardTwo compounds of iron and chlorine, A and B, contain 1.270 g and 1.904 g of chlorine, respectively, for each gram of iron. Show that these amounts are in the ratio 2 : 3. Is this consistent with the law of multiple proportions? Explain.arrow_forward
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