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Margarita [4]
2 years ago
13

Which of the following correctly explains how air exerts pressure on us?

Chemistry
1 answer:
juin [17]2 years ago
6 0
The answer is A.

The molecules in the air located.......below.
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What are two social and economical impacts of Mass Movements?
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Mass movement, or mass wasting, has significant effects on humans, including loss of property, severe injury and death.

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3 years ago
What is the mass of oxygen in 25.0 grams of potassium permanganate , KMnO4?
Katen [24]

Answer:

10.76 grams

Explanation:

Given that the amount of KMnO_4 is 25.0 grams.

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So, the amount of oxygen in 1 gram of KMnO_4 = 68/158 grams

Therefore,  the amount of oxygen in 1 gram of KMnO_4 = \frac {68}{158}\times 25 grams

=10.76 grams

Hence, 25 grams of KMnO_4 has 10.76 grams of oxygen.

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2 years ago
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