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Which of the following CANNOT be classified as a substance? A. table salt B. air C. nitrogen D. gold

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User GuyH
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Answer:

C. Nitrogen

Step-by-step explanation:

All of the other options are mixtures making them substances, but nitrogen is an element. (while gold is an element, there are often times that gold is mixed with other elements, creating a substance)

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User Anshul Goyal
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