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1. In a closed system, matter is neither created nor destroyed. 2. The mass of water is equal to the combined mass of hydrogen and oxygen. 3. 56 g 4. 18 g your welcome 100%
These are the answers - don't believe me, look back at your lesson for this quick check to compare process for problems in question using the equation for a triangle (Area = 1/2 of Base x Height) vs. a parallelogram (Area = Base x Height). 1. A - 51.06 m
Here's an updated response. I hope this resolves the confusion. Use your text or Google search engine for #'s 24 and 25. Questions 17 - 23 have not been graded, but I researched and studied responses. 1. C: new information about an atoms structure is

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