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natita [175]
3 years ago
7

Which of the following hypotheses is testable by using the scientific method?

Chemistry
1 answer:
Troyanec [42]3 years ago
7 0

Answer:

d

Explanation:

<em>The only hypothesis that is testable using the scientific method would be that </em><em>all swans are white.</em>

The scientific method involves a series of steps through which scientists are able to arrive at a conclusion about the natural world. The steps include observation, drawing up falsifiable hypotheses from observations, testing the hypotheses using experiments, and then arriving at conclusions based on the data gathered from the experiment.

There is no way to test the mortality of all men as this will require harming humans in order to prove their mortality. The best color is also subjective as individuals have their preference when it comes to color. There is no way to prove the hypothesis that no life exists on other planets as this will require visiting other planets, a gesture that is practically impossible. That swimming is fun can also be subjective. Not everyone finds swimming interesting.

<u>The hypothesis that all swans are white can be tested by sampling the population of swans in different areas and recording their colors objectively.</u>

<em>Hence, the correct option is </em><em>d</em><em>.</em>

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For each of the following units and concentration values, mention if they are parts per million (ppm), parts per billion (ppb) o
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Answer:

a) ppm

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Explanation:

a) You know that 1000 g are 1 kg, and 1000 kg are 1 ton, so (1000)*(1000) g are 1 ton, so 1,000,000 grams are one ton.

b) 1000 mg are 1 g, and 1000 g are 1 liter, so 1,000,000 grams are one liter.

c) You know that 1000 ug are 1 mg, so with the b), we just need to multiply the answer by 1000, so 1,000,000,000 ug are 1 liter.

d) The same as c, 1000 ng are 1 mg. So we are talkinf of ppt.

e) 1000 mg are 1 g. And 1000 g are 1 kg, then 1000 kg are one ton. So 1,000,000,000 mg are one ton.

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