What is the sign of a chemical reaction
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Chemistry, 22.06.2019 06:30
The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
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Chemistry, 22.06.2019 06:30
Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?
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Chemistry, 22.06.2019 15:20
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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History, 29.02.2020 23:53
Biology, 29.02.2020 23:53
Mathematics, 29.02.2020 23:53
Mathematics, 29.02.2020 23:53
Mathematics, 29.02.2020 23:53
Mathematics, 29.02.2020 23:54
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Mathematics, 29.02.2020 23:55
Mathematics, 29.02.2020 23:55