Chem+2+MIDTERM+1+Form+A++KEY

Chem+2+MIDTERM+1+Form+A++KEY - Midterm 1 Exam Form A, CHEM...

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Midterm 1 Exam Form A, CHEM 002 Fall 2011. (Chapters 2, 3 and 4) Name: _________________________ Date: ____________ Please be sure the chemical equation(s) given in the question(s) below are balanced before you attempt to answer the respective question(s). 1. What is the molarity of a 50.3% by weight nitrous acid solution whose density is 1.42 g/mL? a) 15.2 M b) 9.57 M c) 7.00 M d) 12.3 M e) 12.5 M 2. How many grams of phosphoric acid would be required to prepare 1.00 liter of a 0.250 M phosphoric acid solution? a) 11.8 g b) 24.5 g c) 2.83 g d) 113 g e) 4.25 g 3. What is the oxidation number of each nitrogen atom in dinitrogen pentoxide? a) -3 b) -4 c) +5 d) -2 e) 0 4. 0.575 g of H 3 PO 4 completely dissolved in 1.00 liter of water was required to neutralize 67.5 mL of Sr(OH) 2 . What was the molar concentration of the base? Sr(OH) 2 (aq) + H 3 PO 4 (aq) Sr 3 (PO 4 ) 2 (aq) + H 2 O (l) a) 0.0579 M b) 0.175 M c) 0.500 M d) 0.360 M e) 0.130 M 5. 26.540 grams of a metal oxide contains 0.11096 moles of the metal. What is the
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This note was uploaded on 11/02/2011 for the course CHEM 2 taught by Professor Mark during the Spring '10 term at UC Merced.

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Chem+2+MIDTERM+1+Form+A++KEY - Midterm 1 Exam Form A, CHEM...

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