10) Iron has three stable isotopes: 55Fe, 56FE, and 57Fe. The masses and natural abundance of each isotope are listed below. Isotope Isotopic Mass (amu) Natural Abundance (%) 55Fe 54.99 1.79 56FE 55.99 60.30 57Fe 56.99 a. What is the natural abundance of 57Fe? b. What is the atomic mass of iron? You might get a different answer than what is listed on the periodic table. c. If a sample of iron contains 0.582 kg, how many atoms are present? Use the atomic mass you calculated in part (b).

Q: Relative number of atoms The stable isotopes of iron are 54F., 56FE, 57Fe, and 58F.. The mass…

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Q: Bromine has two naturally occurring isotopes, Br-79 and Br-81. Given that on the planet Saturn the…

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Q: The following shows the mass ratio of Ca and CI2 and the mass of CaCl2 formed in various…

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Q: Consider chlorine, which occurs as a mixture of two isotopes: chlorine-35, with a natural abundance…

A:

Q: The atomic weight of Cl is 35.45 amu. There are only two naturally occurring isotopes of chlorine:…

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Q: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

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Q: Boron consists of two isotopes. The reported mass of boron is the weighted average of these two…

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Q: A 1A 2A Atomic Number 8A E 1 A ЗА C 1 W J Zy 4A 5A 6A 7A 4 7 K V Ad 9. 10 11 12 13 14 15 Q U Ac Ab…

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Q: Assume magnesium has three major isotopes in nature as shown in the table below. Fill in the missing…

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Q: a. 0 35. Rubidium has two naturally occurring isotopes, Rb-85 (relative mass 84.9118 amu) with %…

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Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

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Q: On a planet in a separate solar system, silver has an atomic weight of 107.41 g/mol. a) Much like on…

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Q: Silicon (average atomic mass=28.0855amu) has three isotopes. Their masses are 27.9769amu,…

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Q: Chromium has an atomic mass of 51.9961 u and consists of four isotopes, 50 Cr, 2Cr, 53Cr, and Cr.…

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Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46T¡…

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Q: Abundances 0.005% 0.720% 99.275% O a. 238.028 O b. 234 O c. 237 O d. 237.80 Relative masses…

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Q: A hypothetical element, M, has four stable isotopes with the masses shown below. 109M = 108.9842…

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Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

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Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

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Q: 01. Suppose you have atoms A and B. Which of the following is not true? A. All matter is composed of…

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.