Exam1 - 1) How many grams of hydrogen are in 46 g of CH4O?...

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1) How many grams of hydrogen are in 46 g of CH 4 O? A) 5.8 B) 1.5 C) 2.8 D) 0.36 E) 184 2) Pentacarbonyliron (Fe(CO) 5 ) reacts with phosphorous trifluoride (PF 3 ) and hydrogen, releasing carbon monoxide: Fe(CO) 5 + 2PF 3 + H 2 Fe(CO) 2 (PF 3 ) 2 (H) 2 + 3CO The reaction of 5.0 mol of Fe(CO) 5 , 8.0 mol of PF 3 and 6.0 mol of H 2 will release __________ mol of CO. A) 15 B) 5.0 C) 24 D) 6.0 E) 12 3) Which of the following compounds would you expect to be ionic? A) SF 6 B)H 2 O C) H 2 O 2 D) NH 3 E) CaO 4) Which species below is the nitride ion? A) Na + B) NO 3- C) NO 2- D) NH 4+ E) N 3- 5) For which of the following can the composition vary? A) pure substance B) element C) both homogeneous and heterogeneous mixtures D) homogeneous mixture E) heterogeneous mixture
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6) Which species has 54 electrons? A) 132 54 Xe + B) 128 52 Te 2- C) 118 50 Sn 2+ D) 112 48 Cd E) 132 54 Xe 2+ 7) Which of the following are strong electrolytes? 1) HCl 2) HC 2 H 3 O 2 3) NH 3 4) KCl A) 1, 4 B) 1, 3, 4 C) 1, 2, 3, 4 D) 1, 2, 4 E) 2, 4 8) How many grams of NaOH (MW = 40.0) are there in 500.0 mL of a 0.175 M NaOH
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This note was uploaded on 02/14/2012 for the course CHEM 130 taught by Professor Jadwigasipowska during the Winter '07 term at University of Michigan.

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Exam1 - 1) How many grams of hydrogen are in 46 g of CH4O?...

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