10. What is the atomic weight of a hypothetical element that consists of 3 isotopes with the Eollowing masses and natura

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10 What Is The Atomic Weight Of A Hypothetical Element That Consists Of 3 Isotopes With The Eollowing Masses And Natura 1 (48.11 KiB) Viewed 31 times

10. What is the atomic weight of a hypothetical element that consists of 3 isotopes with the Eollowing masses and natural abundances? Isotope Mass Comu) 1 272.0 2 274.0 3 276.0 Abundance 31.90 6.700 59.40 A. 274.6 amu B. 273.0 amu c. 274.0 amu D. 272.6 amu E. 275.1 amu 11. How many grams of 2020, are in 32.5 mL of a 5.32 M H2C24 solution? A. 20.99 B. 38.1 g C. 25.4 g D. 33.5 g E, 15.6 g 12. Calculate the mass of hydrogen Eormed when 81.8 g of HD reacts with excess Al as in the following equation: 2 Al 6 HI 3 12 2 Al13 + -> + A. 0.213 g B. 3.83 g C. 0.639 g D. 1.28 g E. 2.56 g 13. Choose the pair of names and formulas that do not match? A. Ba (NO3)2 barium nitrate B. Mncia manganese (11) chloride c. Sn (Cr044 tin (IV) chromate D. Hg2B2 mercurous bromide B. CI (C₂H₂O2/3 chromium(III) acetate