OER.GroupQuiz4.docx - J Muench Group Quiz#4 name partners 1...

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J. Muench Group Quiz #4 __________________ name __________________, ________________, __________________, _________________ partners 1. A compound contains only carbon and hydrogen and is 85.6% carbon by mass. A sample of this compound has a density of 2.66 g/L at 735 mmHg and 100. o C. What is the molecular formula of the compound? 2. The decomposition of trinitrotoluene (TNT) is shown below. If 22.7g of this compound decomposes at 28 o C and 710 mmHg, then what total volume of gas would be produced? 2 C 7 H 5 N 3 O 6 (s) 12 CO(g) + 5 H 2 (g) + 3 N 2 (g) + 2 C(s) 3. Many molecules have benzene (C 6 H 6 ) as their base structure. Arrange the following four benzene derivatives, C 6 H 5 X, in order of increasing boiling points where X = OH, Cl, Br, and –COOH. X 4. Estimate the vapor pressure of methanol at 25 o C. The heat of vaporization for methanol is 37,400 J/mol and the boiling point is 65 o C. 5. Rutile is a mineral composed of Ti and O. The unit cell contains Titanium atoms at each corner and one at the body center. Four Oxygen atoms are located on the faces and two more are located within the body of the cell. What is the empirical formula of this mineral?
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