CHEM 1201 : 2010 Chemistry Exam 1
Document Summary
Encode your answers on the scantron sheet with soft pencil. A periodic table and all necessary constants are provided on the last page. At the end of the exam, turn in the scantron to one of the exam proctors. Encode 1 under grade or education on the scantron sheet: which of the following represent molecular formulas of molecular compounds? (i) (nh4)2so4. Coo (v: (i) only, (i), (ii) and (iii) only, (i), (iv) and (v) only, (ii) and (iii) only, (iv) only, which of the following can be classified as an ionic compound? (i) 1: which of the following corresponds to the smallest mass, 4. 5 10 1 mg, 4. 5 1012 fg, 4. 5 1015 pg, 4. 5 10 2 mg, 4. 5 1010 ng. Perform the indicated operations, expressing the answer to the proper number of significant figures. 13. 436 l + 6 l 5. 28 l : 14. 156 l, 14. 16 l, 14. 2 l, 14 l, 10 l.
