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 Problem Solving Center Quiz 1

 1 . Which of the following is not matter? 2 . Which one of the following is a physical change? 3 . Which one of the following is a homogeneous mixture? 4 . A temperature of 63°F is _______ K. 5 . Which of the following numbers contains six significant figures? 6 . Which is not correctly represented by the right number of significant figures? 7 . A cylindrical glass tube 15.0 cm in length is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64 g. Calculate the inner diameter of the tube in centimeters. (The density of ethanol is 0.789 g/mL.) 8 . 5.00 in. is _______ mm. 9 . A cube of plastic 1.5 cm on a side has a mass of 1.9 g. What is its density in g/cm3? 10 . The winner of a 10,000-m road race completed the course in 20 minutes, 13 seconds. What was the winner's average speed in miles per hour? 11 . A hypothesis 12 . Which of the statements below gives the correct relationship between units? Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.

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