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because there would have to be oxygen in the carbon dioxide to get the oxygen and carbon dioxide and oxygen put together make water because water is H2O
(2 hydrogen and 1 oxygen)

this answer is incorrect because there is oxygen in carbon dioxide or co2 ( one carbon two oxygen)
The top answer is completely incorrect, there is oxygen in carbon (C) dioxide (O2). It is possible to separate the carbon from the oxygen, but it is very difficult. This is because it is a stable atom, meaning the last electron shell is full. It is possible to separate it, but not on a large scale.

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14y ago
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14y ago

If the question is asking about separating oxygen from water molecules, the oxygen and hydrogen in water are chemically bonded. They form a fairly stable compound, and oxygen can't be just "separated" from the hydrogen. And if you did that, you wouldn't have water any more. Separating a water molecule into its constituent parts involves chemistry; it's a chemical change. Should the intent be to separate dissolved oxygen from water, oxygen won't just "leave" water in which it is dissolved without a reason. We'd have to drive it out or absorb it to get it out, or something else. Removing dissolved oxygen from water involves physical activity; it's a physical change.

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Q: Why can't you separate carbon dioxide and get oxygen?
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