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1. A pure substance is a chemical substance that has the same composition throughout. There are two

Chemistry

1 answer:

marin [14]3 years ago

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Answer:

Option D. Iron and sulfur react to form iron sulfide

Explanation:

Reaction of iron with sulphur is a chemical property and not a physical property.

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$\boxed{\boxed{\mathfrak{ 1\: mole \:of \:Na_2Cr_2O_2\: = \:it's \:Gram\: Mol. \: mass}} }$

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