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Chemistry, 22.06.2019 12:00
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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Chemistry, 23.06.2019 10:20
Based on the equation, how many grams of br2 are required to react completely with 29.2 grams of alcl3? alcl3 + br2 โ albr3 + cl2 48.7 grams 52.6 grams 56.7 grams 61.3 grams
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Physics, 12.02.2021 02:20
Mathematics, 12.02.2021 02:20
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