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BabaBlast [244]
3 years ago
9

What sample is a pure substance?A. a test tube of zinc oxide.

Chemistry
2 answers:
Mice21 [21]3 years ago
7 0
The correct answer is A. A test tube of zinc oxide. Zinc oxide is a compound which is a pure substance composed of two or more elements. They can only be separated or broken down into its individual elements or smaller compounds by chemical means. Therefore, the answer is a test tube of zinc oxide.
maks197457 [2]3 years ago
4 0

A is correct i just took the quiz

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Water is a pure substance. Which of the following is true about water? (4 points) Its compounds can only be physically separated
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Answer:

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Explanation:

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3 years ago
Calculate the pH of a solution that is 0.210 M in nitrous acid (HNO2) and 0.290 M in potassium nitrite (KNO2). The acid dissocia
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Answer:

pH = 3.49

Explanation:

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6 0
3 years ago
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3 0
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