key4 - Name: _ F = 96,500 coul/mol n = 1.00867 amu...

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Name: _____________________ Chemistry 1212K Test IV F = 96,500 coul/mol R = 8.314 J/mol(K) 1amu = 1.6605 x 10 -27 kg n = 1.00867 amu p = 1.00728 any e - = 0.0005486 amu Questions (5 points each, SHOW ALL WORK ON THE TEST) 1. If a piece of zinc metal were attached to a piece of iron, which metal would corrode first? Zinc 2. How many moles of Li metal could be produced by the electrolysis of molten LiBr using a current of 30.0 amp for 10.0 hours mol Li mole x x mol Li e molee C F C x C x hr hrs amp Li e Li 19 . 11 19 . 11 1 1 19 . 11 / 500 , 96 10 08 . 1 10 08 . 1 min 1 sec 60 1 min 60 ) 0 . 10 ( 30 1 6 6 3. What is the symbol of a positron parti cle? e 0 1 4. What happens to the mass number and the atomic number of a radioisotope when it undergoes alpha emission? Mass number decreases by 4 and atomic number decreases by 2. 5. Complete the following reaction: ____ __ 1 32 16 32 15 e S P o
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6. Complete the following reaction: ___ _ 117 51 4 2 121 53 Sb He I 7. The half-life for the beta decay of potassium- 40 is 1.3 x 10
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This note was uploaded on 11/16/2011 for the course CHEM 1212k taught by Professor Wood during the Spring '08 term at Valdosta State University .

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key4 - Name: _ F = 96,500 coul/mol n = 1.00867 amu...

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