Problem Set 1

Problem Set 1 - University of Southern California MASC 110L...

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University of Southern California MASC 110L Problem Set #1 E. Goo Due September 5, 2008 1. What are the atomic number and approximate atomic weight element each of whose nuclei contains 81 protons and 122 neutrons? Give the complete symbol for this nuclide, including chemical symbol, atomic number, mass number, and neutron number. 2. How many protons and how many neutrons are there in the nucleus of the isotope of cobalt with mass number 60? Of the isotope of nickel with mass number 60? Of the isotope of plutonium with and mass number of 238? 3. Argon, potassium, and calcium all have nuclides with mass number 40. How many protons and how many neutrons constitute each of the three nuclei? 4. Balance the following equations of chemical reactions. The molecular formula are correct. F e 2 O 3 + C Æ Fe + CO 2 A g + S 8 Æ Ag 2 S C 12 H 22 O 11 + O 2 Æ CO 2 + H 2 O H 3 PO 4 + NaOH Æ Na 3 PO 4 + H 2 O L i + H 2 O Æ LiOH + H 2 HCl + Ba(OH) 2 Æ BaCl 2 + H 2 O CuO + NH 3 Æ N 2 + Cu + H 2 O
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Problem Set 1 - University of Southern California MASC 110L...

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