Why do people who do a lot of physical work need more carbohydrate?
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Chemistry, 01.07.2021 18:00 littleprinces
Why do people who do a lot of physical work need more carbohydrate?
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How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer
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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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An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
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