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A scientist observes that an unknown solution turns blue Litmus paper red and reacts with zinc to produce hydrogen gas. Which of the following best describes the unknown solution. A. a colloid B.an acid
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A scientist observes that an unknown solution turns blue Litmus paper red and reacts with zinc to produce hydrogen gas. Which of the following best describes the unknown solution.

A. a colloid
B.an acid
C.a base
D.a suspension

User Jack Guy
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6 votes
The answer is B: an acid
User Tsherwen
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