Chemistry, 31.10.2019 20:31 genesis6154

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choose all of the examples that obey the law of conservation of mass.
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4 grams of carbon combine with 9 grams of oxygen to produce 13 grams of carbon dioxide.

20 grams of paper is burned to product 7 grams of ash and 13 grams of smoke and gases.

3 grams of hydrogen react with 2 grams of oxygen to produce 6 grams of water

5 grams of reactants react to form 5 grams of products

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choose all of the examples that obey the law of conservation of mass.
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