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Which of the following laboratory procedures best illustrates the law of conservation of mass? (Assume the product of the reaction includes the mass of any unused reactants.) (3 points) a Recording the rise in water level when a 25 g piece of wood is placed in 200 mL of water b Synthesizing 36 g of H2O by combining 4 g of H2 and 32 g of O2 c Heating 32 g of S and 56 g of Fe to form 80 g of FeS d Measuring precisely 0.495 g of sulfur powder
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The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?
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How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.
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George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.
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Which of the following is true about the speed of light? it depends on the wavelength.
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Which of the following laboratory procedures best illustrates the law of conservation of mass? (Assu...
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