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scoundrel [369]
3 years ago
7

What is a main difference between a mixture and a pure substance?

Chemistry
2 answers:
vlada-n [284]3 years ago
5 0

A mixture can vary in composition, but a pure substance cannot. think of salad dressing in a bottle and then think of pure water.

alex41 [277]3 years ago
4 0
The answer is to this question is D
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A buffer is made by dissolving H3PO4 and NaH2PO4 in water.
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Answer:

(a) H₃O⁺(aq) + H₂PO₄⁻(aq) ⟶ H₃PO₄(aq) + H₂O(ℓ)

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