che2a-exam1-w2006

che2a-exam1-w2006 - CHEMISTRY 2A-c Hour Exam I January 30,...

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CHEMISTRY 2A-c NAME ______________________ Hour Exam I T. A. ________________________ January 30, 2006 Lab Section Number ___________ Winter 2006 Lab Room ___________________ Lecture: MWF 2:10-3:00 pm CLOSED BOOK EXAM – No books or notes allowed. Place all answers in the space provided. Be sure to write your name, your T.A.’s name, and your Lab Section Number in upper right hand corner. This examination contains 3 questions on 6 pages. Question Credit I. (16 points) II. (33 points) III. (51 points) Total (100 points) Avogadro’s number: 6.022x10 23 #/mol M 1 V 1 =M 2 V 2 d = m/V 1
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I. (16 points) 1. (4 points) Give the symbols of the following elements: Cadmium ________ Antimony ________ Tungsten _________ Arsenic ________ 2. (4 points) Write in the name of the elements whose symbols are given below. Mn _____________ Ti _____________ Se _____________ P ______________ 3. (4 points) Give the correct formula of the following compound names. Cobalt (II) chlorate____ __ ________ Magnesium nitride_______________ Calcium phosphate___ ___ ________ Calcium carbonate____ _____ ______ 4. (4 point) Give the compound names of the following formula H 2 SO 3 _____________________ HF ____ ______________________ B a ( N O 2 ) 2___ _____________________ NH 4 Cl _______________________ II. (33 points total, 2 points each unless specified) 1. The number of significant figures for 0.00010200 is ___________ 2. Give the result of the division in the correct significant figure (use the scientific notation) (82) ÷ (0.253) = ____ _____ _____. 3. (3 points) Give the numbers of electrons, protons, and neutrons in the 192 Ir + cation.
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che2a-exam1-w2006 - CHEMISTRY 2A-c Hour Exam I January 30,...

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