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homework1 - 5. (2 pts) A train is traveling at 78.4 miles...

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Homework #1 Name ___________________ Chem 30A Dr. Harrison 1. (4 pts) Determine the number of significant figures in the following measurements. a) 40,000 g _______ c) 080.40 g _______ b) 40,001 g _______ d) 1.00 x 10 -4 g _______ 2. (4 pts) Using scientific notation convert the following measurements to three significant figures. a) 40,000 g ___________________ b) 0.00084060 g _____________________ c) 23.499 m ___________________ d) 0.003456 x 10 -8 g __________________ 3. (2 pts) Do the following operations keeping in mind significant figures. a) 3.040 x 10 -4 g = ___________ b) 343.08 g .0036014 ml + 10.1 g 4. (2 pts) How many milliliters in 2.3 gallons of gas? 1 L = 1.06 qt. 1 gallon = 4 quarts
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Unformatted text preview: 5. (2 pts) A train is traveling at 78.4 miles per hour. Convert this velocity to hectometers per min. Use the following conversions: 1 m = 39.4 inch, 60 min = 1 hour, 1 mile = 5280 ft, 1 ft = 12 inch 6. (2 pts) The area of a triangle is 67.4 in 2 . Convert this area to m 2 . (1 inch = 2.54 cm) 7. (2 pts) A graduated cylinder contains 18.0 mL of water. What is the new water level after 35.6 g of silver metal with a density of 10.5 g/mL is submerged in the water? 8. (2 pts) Complete the following conversions using proper scientific notation format where appropriate. a) 34.8 km to dm ____________________ b) 3.4 x 10-8 cm to hm _________________...
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This note was uploaded on 10/07/2009 for the course CHEM 30a taught by Professor Harrison during the Fall '08 term at Rice.

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homework1 - 5. (2 pts) A train is traveling at 78.4 miles...

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