Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- Antimony has two naturally occuring isotopes, 12 Sb and 123Sb. 12'Sb has an atomic mass of 120.9038 u, and 123Sb has an atomic mass of 122.9042 u. Antimony has an average atomic mass of 121.7601 u. What is the percent natural abundance of each isotope? 121 Sb: % 123 Sb:arrow_forwardThe element zirconium has five naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. Show your work to determine the average atomic mass. Isotope Mass % Abundance Zr-90 89.9043 51.40 Zr-91 90.9053 11.20 Zr-92 91.9046 17.10 Zr-94 93.9061 17.50 Zr-96 95.9082 2.80arrow_forwardThere are only two naturally-occuring stable isotopes of chlorine, the masses of which are listed in the table below. Use whatever data you need from the ALEKS Periodic Table to calculate the natural abundance of each isotope and complete the table. 35 Round your entry for C1 to 4 significant digits and your entry for isotope 35 Cl 37 Cl mass (amu) 34.969 36.966 natural abundance 1% % ☐x10 X 37 C1 to 4 significant digits. Śarrow_forward
- Which sample contains the greatest number of atoms? (No calculations necessary). Group of answer choices 68 g 31Ga 70 g 34Se 34 g 15P 190 g 79Auarrow_forward[Atomic mass and isotopes] An unknown element has two naturally occurring isotopes: X- 69 and X-71. The mass of X-71 is 70.9163 amu, and its natural abundance is 49.31%. Calculate the mass and natural abundance of X-69. (Hint: The atomic mass of this unknown element is 69.90 amu.) Isotope mass (amu) natural abundance (%) X-69 X-71 70.9163 49.31arrow_forwardSymbol Abundance in Nature Protons: Periodic Table Neutrons: Electrons: H. Не Li Be C Ne My Isotope Symbol Carbon-13 Abundance in Nature +1 Stable O Mass Number 13 Neutrons Atomic Mass (amu)arrow_forward
- A new element is discovered and has three stable isotopes. The atomic weight of the element is 269.7374 amu. Isotope X-268 has a measured mass of 267.9086 amu and an abundance of exactly 0.2 (infinite sig figs) Isotope X-272 has a measured mass of 271.8937 amu and an abundance of exactly 0.45 (infinite sig figs) What is the mass (in amu) of the other isotope? Report to the ten thousands place (4 decimal places)arrow_forwardfictitious element X has an average atomic mass of 122.339 u. Element X has two naturally occuring isotopes. The most bundant isotope has an isotopic mass of 121.596 u and a relative abundance of 68.36%. Calculate the isotopic mass of the leas abundant isotope. isotopic mass XTO' TOOLSarrow_forward
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