3 years ago

Chất có ở đâu ? nước tự nhiên là chất hay hỗn hợp

1 answer:

4 0

Answer:

Water, H2O, is a pure substance, a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created. Pure water is called distilled water or deionized water.

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Solids , liquids are the three different states of matter However , they show some similarities of their properties

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Answer:

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2 years ago

92dm3 of a gas dissolved in a solvent. How many moles is this?

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3 years ago

Explain how the fire spreading from tree to tree provides a model for conduction.

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A student walks 2 km in 30 min what is the students average In km/h

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3 years ago

A student estimated the volume of a liquid in a beaker as 200.0 mL. When she poured the liquid into a graduated cylinder she MEA

Taya2010 [7]

Answer:

<h3>The answer is 0.91 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\% \\$

From the question

actual volume = 198.2 mL

error = 200 - 198.2 = 1.8

So we have

$P(\%) = \frac{1.8}{198.2} \times 100 \\ = 0.90817356205...$

We have the final answer as

Hope this helps you

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3 years ago