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Rufina [12.5K]
3 years ago
9

In order to say that carbon dioxide caused global warming scientists had to A.Come up with a mechanism that made sense and test

the steps in the mechanism to see if they were accurate B. Make a good argument for climate change and publish it in a research journal C. Make a graph that showed that carbon dioxide and the Earth’s temperature were increasing at the same time D.Review the weather patterns on Earth to see if they were changing over time
Chemistry
1 answer:
Bumek [7]3 years ago
6 0

Answer:

Option A.

Explanation:

Option A directly tests the cause and effect. Option B simply argues it argumentatively without any solid evidence to show cause and effect. Option C only shows correlation and Option D only shows correlation as well.

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What volume would a 0. 250 mole sample of h2 gas occupy if it had a which a a pressure of 1. 70 atm and a temperature of 35 C?
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The volume of  0. 250 mole sample of H_{2} gas occupy if it had a pressure of 1. 70 atm and a temperature of 35 °C is  3.71 L.

Calculation,

According to ideal gas equation which is known as ideal gas law,

PV =n RT

  • P is the pressure of the hydrogen gas  = 1.7 atm
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By putting all the values of the given data like pressure temperature universal gas constant and number of moles in equation (i) we get ,

1.7 atm×V = 0.25 mole ×0.082 × 208 K

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V = 3.71 L

So, volume of the sample of the hydrogen gas occupy is  3.71 L.

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Wendy made the following diagram shown to represent the solar eclipse.
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Heating a solution of alcohol and water, then collecting the alcohol vapors and condensing them into a liquid with higher alcoho
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