substancesprobs - Solomon's Study Notes General Chemistry I...

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S olomon’s Study Notes General Chemistry I Fall 2011 Solomon Weiskop PhD Practice Problems: Substances General Chemistry 1
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Study Notes & Practice Problems are available to print out by registering at www.solomonlinetutor.com Solomon Weiskop PhD © Copyright 2011
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1 [#1] A comfortable room temperature is 72°F. In Celsius this temperature is (a) 8.0°C (b) 14°C (c) 22°C (d) 54°C (e) 98°C [#2] Aspirin melts at 275°F. In Celsius this temperature is (a) 175°C (b) 63°C (c) 275°C (d) 135°C (e) 487°C [#3] Which metric prefix means ±² ³ ´µ ? (a) kilo (b) nano (c) pico (d) micro (e) milli [#4] How many microliters are in 89.63L ? (a) ¶·¸¹º² ±² ³ ´» ²¼½ (b) ¶·¸¹º² ±² ³ » ²¼½ (c) ¶·¸¹º² ±² ³ ´¾ ²¼½ (d) ²¶·¸¹º² ±² ³ ¾ ²¼½ (e) ¶·¸¹º² ±² ³ ¿À ¼½ [#5] Which of the following conversions is incorrect? (a) ³·³³ÁÂÃÄŲ Æ Á·ÂÃÅ (b) 50.0mL = 0.050L (c) ¶·ºÂÇȲ Æ ¶·ºÂ² ±² ³ ´É ²È (d) ¹¹· ÈŲ Æ ¹·¹ ² ±² ³ ´Ê Å (e) none of the above [#6] A new hybrid car gets 45 miles per gallon in city traffic. What is the mileage expressed in km/L ? (a) 19km/L (b) 7.4km/L (c) 274km/L (d) 106 km/L Note: 1.609 km = 1 mile 3.785 L = 1 gal [#7] Estimate the number of atoms across the diameter of a human hair. Given that the diameter of an atom is about 0.1nm and the diameter of a human hair is about 0.1mm. (a) ³ ´¿Ê (b) ³ ¿Ê (c) ³ É (d) ³ µ (e) ³ Ë [#8] What would you report for the total mass of three samples weighing 106.2g, 33.15g and 0.028g ? (a) 139g (b) 139.3g (c) 139.4g (d) 139.38g (e) 139.378g
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2 [#9] You are a technician working in an analytical laboratory. You are asked to determine whether a certain antique coin is gold. You weigh the coin and find its mass to be 84.6419g. When you place the coin in a graduated cylinder containing 105.53mL of water, the water level rises to 114.64mL.
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This note was uploaded on 03/12/2012 for the course CHEMISTRY 131 taught by Professor Lacey during the Fall '11 term at SUNY Stony Brook.

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substancesprobs - Solomon's Study Notes General Chemistry I...

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