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Which one of these substances are pure substances iron, salt water, salt, air, oxygen?

Which one of these substances are pure substances iron, salt water, salt, air, oxygen?
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2 votes
Which one of these substances are pure substances iron, salt water, salt, air, oxygen?

User Imposter
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5 votes

Answer:iron and oxygen

Step-by-step explanation:

User Med
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7.8k points
4 votes

Answer: iron and water are pure substances.

User FireShock
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7.5k points
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