CHEM 1110 Midterm: Chemistry 1110 2013 Spring Test 3 Key
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Part 1- balancing equations and stoichiometry calculations (50 pts), show all work for credit. (6 pts) balance the following equations and identify the reaction type. What is the mass of carbon in 3. 45 g of c6h100sz? (mm of c6h100sz = 162. 27 gjmol) (10pts) automotive air bags inflate when sodium azide, nan3, rapidly decomposes to its component elements. What mass of sodium is formed when 15. 0g of nan3 decompose? (mm of nan3 = 65. 01 gjmol) ~ _go~ ;j~ (10 pts) the fermentation of glucose (c6h1206) produces ethanol (czhsoh) and carbon dioxide. What mass of coz is produced when 7. 50 g c6h 1206 are fermented? (mm of. C6h1206 = 180. 18 gfmol, mm ofcoz = 44. 01 gfmol) 1 m o 1 t, ~:v o, x . :o -s-==- q. H (5 pts) rank the following atoms in order of electronegativity: p, f, cl, and ge.
