PracticeTest2a

PracticeTest2a - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 1) Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N 2 (g) + 3H 2 (g) 2NH 3 (g) A 7.1 - g sample of N 2 requires __________ g of H 2 for complete reaction. A) 0.51 B) 1.5 C) 0.76 D) 17.2 E) 1.2 1) 2) How many moles of magnesium oxide are produced by the reaction of 3.82 g of magnesium nitride with 7.73 g of water? Mg 3 N 2 + 3H 2 O 2NH 3 + 3MgO A) 0.0756 B) 0.113 C) 4.57 D) 0.0378 E) 0.429 2) 3) Of the species below, only __________ is NOT an electrolyte. A) HCl B) Ar C) Rb 2 SO 4 D) NaCl E) KOH 3) 4) With which of the following will ammonium ion form an insoluble salt? A) chloride B) carbonate C) sulfate and carbonate D) sulfate E) none of the above 4) 5) A weak electrolyte exists predominantly as __________ in solution. A) electrons B) ions C) an isotope D) atoms E) molecules 5) 6) Which of the following are weak electrolytes? 1) HCl 2) HC 2 H 3 O 2 3) NH 3 4) KCl A) HC 2 H 3 O 2 , KCl B) HCl , HC 2 H 3 O 2 , KCl C) HCl , HC 2 H 3 O 2 , NH 3 , KCl D) HCl , KCl E) HC 2 H 3 O 2 , NH 3 6) 1
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7) Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via combining aqueous solutions of CoCl 2 and AgNO 3 ? A) Co
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PracticeTest2a - Exam Name_ MULTIPLE CHOICE. Choose the one...

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