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Umnica [9.8K]
3 years ago
13

How many variables are there in science

Chemistry
1 answer:
Sedaia [141]3 years ago
7 0
There are three variables independent, dependent ,and controlled
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What volume of oxygen is needed to react with 20cm3 of ethane?
Anna71 [15]

Answer:

The reaction states that 2 moles of ethane react with 7 moles of oxygen. At standard temperature and pressure conditions (STP), each mole of gas occupies a volume of 22.4 liters. Therefore, 2 moles of ethane occupy liters, and 7 moles of oxygen occupy liters. In other words: 6 liters.

Explanation:

I hope it helps you

7 0
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The image below shows the Lake Mead Recreation Area,
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D. Many, many years of deposition

Explanation:

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3 years ago
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Answer:

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7 0
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Which property of water best explains why ice forms on its surface
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