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C111P F09 T2 - CHEMISTRY ocToBER 23,20A9 SECOND EXAM 111...

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CHEMISTRY 111 SECOND EXAM ocToBER 23,20A9 BUBBLE IN YOUR NAME AND ID FIUMBER ON T}IE SCANTRON STIEET FOR PROPER IDENTIFICATION. THERE IS ONLY ONE BEST ANSWER FOR EACH QUESTION. YOUR PERIODIC CHART CONTAINS MUCH USEFUL INFORMATION NEEDED FOR SOME QUESTIONS. *** GOOD LUCK *'r* 1 What is the percent by weight of nitrogen 0) ra.6% (2) 7s8% (3) s.30% '1. 8. Consider the four polyatomic ions below. -"^o]irit*|tl;""" B. cyani-de c. uo,tlSiurn Which of these carries a charge of -2? ,/:. (1)A (2)B (3)A&B (4)c ('l_g) Consider the four polyatomic ions below. A. hydroxide B. cyanide C. ammonium Which of tlpsecqntains exactly 10 valence electrons? (1)A (9_y (3)A&B (4)c (s)D The proper chemical formula fgr-calciuao+hasphate is -?-. (1) Kpo4 (2) K3p a-)tggg)' (4) capoa (s) The proper name for CuSO+ is _?_. (1) copper sulfate (2) copper sulfite (3) copper(I) sulfate (5) coppe(f) sulfite 9. the-fe*ilis€eaomonium sulfate? \* *\ u\ ;SO @ 6)37'% \ -L SlJ.r D. sulfate D. sulfate 2. Adrenalin is a hormone secreted in the blood stream in times of danger or stress. It has a molecular . mass of about 183 amu and is 59.00% carbon, 7.15% hydrogen, 26.200/o oxygen, and,1.65% nitrogen. What is the molecular formula of adrenalin?
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