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3 years ago

Which factor is most important to consider when evaluating a journal article about global warming?

Chemistry

2 answers:

Strike441 [17]3 years ago

7 0

Answer:

Does the article contain facts or only opinions? - B)

meriva3 years ago

4 0

Answer:

The correct answer will be option-B.

Explanation:

Global warming is a hot topic of debate in the science world on how to resolve the environmental issues created by global warming. The scientific journals usually contain the articles related to the new research and scientific discoveries reviewed by the peer-review fellow scientists.

The journals ensure that the research articles to be published containing the experimental data which supports the hypothesis which should not be plagiarized. The article should be based on the reviewed facts and not personal small opinions. So to evaluate articles on global warming, one must ensure that the data should not be plagiarized.

Thus, Option-B is the correct answer.

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3 years ago

If 88.0 L of natural gas, which is essentially methane (CH4), undergoes complete combustion at 720. mm Hg and 22ºC, how many gra

mr_godi [17]

126 grams of H2O is formed.

Explanation:

Data given:

volume of the gas = 88 Liters

pressure = 720 mm Hg or 0.947 atm

temperature T = 22 Degrees or 295.15 K

R = 0.08021 atm L/mole K

n =?

The formula is used is of ideal gas law to know the number of moles of CH4 undergoing combustion.

PV = nRT

n = $\frac{PV}{RT}$

putting the values in the equation

= 0.947 X 88/ 0.08021 X 295.15

n = 3.5 moles

balanced reaction for combustion of methane

CH4 + O2 ⇒ CO2 + 2H20

1 mole of CH4 undergoes combustion to form 2 moles of water

3.5 moles will give x moles of water

2/1 = x/3.5

x = 7 moles of water (atomic mass of water = 18 gram/mole)

mass = atomic mass x number of moles

mass = 18 x 7

=126 grams of water is formed.

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3 years ago