General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Textbook Question
Chapter 1, Problem 1.86SP
Magnesium has three naturally occurring isotopes: 24Mg (23.985) with 78.99% abundance, 25Mg (24.986) with 10.00% abundance, and a third with 11.01% abundance. Look up the atomic weight of magnesium, and then calculate the mass of the third isotope.
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Chapter 1 Solutions
General Chemistry: Atoms First
Ch. 1.1 - Look at the alphabetical list of elements inside...Ch. 1.1 - Prob. 1.2PCh. 1.3 - Identify the following elements as metals,...Ch. 1.3 - Prob. 1.4CPCh. 1.5 - Compounds A and B are colorless gases obtained by...Ch. 1.7 - The gold foil Rutherford used in his scattering...Ch. 1.7 - A small speck of carbon the size of a pinhead...Ch. 1.8 - The isotope S3475e is used medically for the...Ch. 1.8 - Chlorine, one of the elements in common table salt...Ch. 1.8 - An atom of element X contains 47 protons and 62...
Ch. 1.9 - Copper metal has two naturally occurring isotopes:...Ch. 1.9 - Based on your answer to Problem 1.11, how many...Ch. 1.9 - What is the mass in grams of each of the following...Ch. 1.9 - How many moles are in each of the following...Ch. 1.11 - Prob. 1.15PCh. 1.11 - Prob. 1.16PCh. 1.11 - Prob. 1.17CPCh. 1.11 - Prob. 1.18PCh. 1.11 - Prob. 1.19PCh. 1 - Prob. 1.20CPCh. 1 - Where on the following outline of a periodic table...Ch. 1 - Prob. 1.22CPCh. 1 - Prob. 1.23CPCh. 1 - If yellow spheres represent sulfur atoms and red...Ch. 1 - Prob. 1.25CPCh. 1 - Prob. 1.26CPCh. 1 - Prob. 1.27CPCh. 1 - In the following drawings, red spheres represent...Ch. 1 - Isotope A decays to isotope E through the...Ch. 1 - Prob. 1.30SPCh. 1 - Prob. 1.31SPCh. 1 - Prob. 1.32SPCh. 1 - Prob. 1.33SPCh. 1 - Prob. 1.34SPCh. 1 - Prob. 1.35SPCh. 1 - Prob. 1.36SPCh. 1 - Prob. 1.37SPCh. 1 - Prob. 1.38SPCh. 1 - Prob. 1.39SPCh. 1 - Prob. 1.40SPCh. 1 - Prob. 1.41SPCh. 1 - Prob. 1.42SPCh. 1 - Prob. 1.43SPCh. 1 - Prob. 1.44SPCh. 1 - Prob. 1.45SPCh. 1 - Prob. 1.46SPCh. 1 - Prob. 1.47SPCh. 1 - Prob. 1.48SPCh. 1 - Prob. 1.49SPCh. 1 - Prob. 1.50SPCh. 1 - Prob. 1.51SPCh. 1 - Prob. 1.52SPCh. 1 - Prob. 1.53SPCh. 1 - Prob. 1.54SPCh. 1 - Prob. 1.55SPCh. 1 - Prob. 1.56SPCh. 1 - Prob. 1.57SPCh. 1 - Prob. 1.58SPCh. 1 - Prob. 1.59SPCh. 1 - Prob. 1.60SPCh. 1 - If 6.02 1023 atoms of element Y have a mass of...Ch. 1 - Prob. 1.62SPCh. 1 - Prob. 1.63SPCh. 1 - Prob. 1.64SPCh. 1 - Prob. 1.65SPCh. 1 - Prob. 1.66SPCh. 1 - Prob. 1.67SPCh. 1 - Prob. 1.68SPCh. 1 - Prob. 1.69SPCh. 1 - Prob. 1.70SPCh. 1 - Prob. 1.71SPCh. 1 - Prob. 1.72SPCh. 1 - Prob. 1.73SPCh. 1 - Prob. 1.74SPCh. 1 - Prob. 1.75SPCh. 1 - Prob. 1.76SPCh. 1 - Prob. 1.77SPCh. 1 - Prob. 1.78SPCh. 1 - Prob. 1.79SPCh. 1 - Prob. 1.80SPCh. 1 - Prob. 1.81SPCh. 1 - Prob. 1.82SPCh. 1 - Which of the following isotope symbols cant be...Ch. 1 - Prob. 1.84SPCh. 1 - Naturally occurring silver consists of two...Ch. 1 - Magnesium has three naturally occurring isotopes:...Ch. 1 - Prob. 1.87SPCh. 1 - Prob. 1.88SPCh. 1 - Prob. 1.89SPCh. 1 - Prob. 1.90SPCh. 1 - Prob. 1.91SPCh. 1 - Prob. 1.92SPCh. 1 - Prob. 1.93SPCh. 1 - Prob. 1.94SPCh. 1 - Prob. 1.95SPCh. 1 - Prob. 1.96SPCh. 1 - Prob. 1.97SPCh. 1 - Prob. 1.98SPCh. 1 - Prob. 1.99SPCh. 1 - Prob. 1.100SPCh. 1 - Prob. 1.101SPCh. 1 - Prob. 1.102CHPCh. 1 - Prob. 1.103CHPCh. 1 - Prob. 1.104CHPCh. 1 - Prob. 1.105CHPCh. 1 - Prob. 1.106CHPCh. 1 - Prob. 1.107CHPCh. 1 - Prob. 1.108CHPCh. 1 - Prob. 1.109CHPCh. 1 - Prob. 1.110CHPCh. 1 - The mass percent of an element in a compound is...Ch. 1 - Prob. 1.112CHPCh. 1 - Prob. 1.113CHPCh. 1 - In an alternate universe, the smallest negatively...
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- 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_forwardGive the complete symbol (XZA), including atomic number and mass number, of (a) a nickel atom with 31 neutrons, and (b) a tungsten atom with 110 neutrons.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_forward
- Click 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_forward2.90 Naturally occurring europium has an average atomic weight of 151.964 amu. If the only isotopes of europium present are 151Eu and 153Eu, describe how you would determine the relative abundance of the two isotopes. Include in your description any information that would need to be looked up.arrow_forwardGive the complete symbol(ZAX), including atomic number and mass number, of (a) a nickel atom with 31 neutrons, (b) a plutonium atom with 150 neutrons, and (c) a tungsten atom with 110 neutrons.arrow_forward
- Silicon (averageatomicmass=28.0855amu) has three isotopes. Their masses are 27.9769 amu, 28.9765 amu, and 29.9738 amu. The abundance of the heaviest isotope is 2.96%. Estimate the abundances of the first two isotopes.arrow_forwardDefine mass number. What is the difference between mass number and atomic mass?arrow_forwardWhen a sample of phosphorus burns in air, the compound P4O10 forms. One experiment showed that 0.744 g of phosphorus formed 1.704 g of P4O10. Use this information to determine the ratio of the atomic weights of phosphorus and oxygen (mass P/mass O). If the atomic weight of oxygen is assumed to be 16.000, calculate the atomic weight of phosphorus.arrow_forward
- 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_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_forwardTwo samples of different compounds of sulfur and oxygen have the following compositions. Show that the compounds follow the law of multiple proportions. What is the ratio of oxygen in the two compounds for a fixed amount of sulfur? Amount S Amount O Compound A l.210g 1.811 g Compound B 1.783 g 1.779 garrow_forward
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