13. Calculate the percentage of bromine atoms that have a mass of 78.9183 amu and the percentage that have a mass of 80.9163 amu. The atomic mass of bromine is 79.909amu, and these are the only two naturally occurring isotopes. A. 65.4 %, 34.6 % B. 37.6%, 62.4 % C. 50.4 %, 49.6 % D. 44.6 %, 55.4%

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A: Given  uranium-235 estimated to be 47.14960 kg

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Q: 11. What is the molar mass of oxygen gas? A. 16. g/mol B. 32.0 g/mol C. 8 g/mol D. 24 g/mol

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Q: 5042- 5 ↑ S2- OXIDIZING REDUCING

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Q: References Use the References to access important values if needed for this question. Show, using…

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Q: Convert the following transmittance data to absorbance.  a) 27.2% b) 0.579% c) 30.6%

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Q: OH + H₂C-CH-CH₂-NH₂ H50, HCCH, + HO H₂C OH -CH₂ H50, +H₂C-OH->>

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Q: Explain the diagram

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Q: (aq) 2. 2 Mg(s) + O2(g) → 2 MgO(s) 3. Sn4+ (aq) + Fe²+ (aq) → Sn²+ (aq) + Fe³+ (aq)

A:

Q: REDUCED 3 Hg2+ + 2 Fe (s) → 3 Hg2 + 2 Fe3+

A: reduction ;   3 Hg2+ + 6e-  ---> 3 Hg2  oxidation ;   2Fe ---> 2 Fe3+ + 6e-

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Q: 12. Calculate the atomic mass of an element if its average atom has a mass 2.25 times that of…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.