A solution contains 1.25x10-2 M iron(II) acetate and 9.25x103 M cobalt(II) nitrate. Solid sodium carbonate is added slowly to this mixture. What is the concentration of cobalt(II) ion when iron(II) ion begins to precipitate? [Co²+] = M

Learning Goal: Atoms with the same number of protons but different numbers of neutrons are called isotopes. Some elements only have one naturally occurring isotope, while others such as carbon have two or more. In a naturally occurring sample isotopes of each element are present in a certain percentage amount called the percent natural abundance. The mass number of an isotope is the sum of the number of protons and the number of neutrons for a particular isotope and is symbolized by A. A = number of protons + number of neutrons There are several different types of isotope notation. For example, a carbon isotope that has an atomic number of 6 and a mass number of 13 could be symbolized in any of the following ways: C, carbon-13, or C-13. tab Part A Enter the appropriate symbol for an isotope of potassium-39 corresponding to the isotope notation 4X. Express your answer as a chemical symbol using Isotope notation. View Available Hint(s) esc 7 caps lock Part B Complete previous part(s)…

Order the steps to collect a sample using Nicolet iS5 FTIR Add sample to crystal 3 Find peaks Save file Collect sample 1 Clean crystal to collect background Collect background > > > > 6

2. An object is achiral if it is       A. identical to its mirror image       B.different than its mirror image       C.has no mirror image       D. has no relationship with its mirror image

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