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Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
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What volume of 0.500 mol/l hydrochloric acid, hci (aq) is required to react completely with 1.00 g of aluminum hydroxide, ai(oh)3 (s)?
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What is the density, d, of a substance with a volume of v = 12.5 cm3 and a mass of m = 74.4 g ?
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Choose the pair of substances that are most likely to form a homogeneous solution. a) nacl and hg b)...
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