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Andrews [41]
3 years ago
15

Why does it make sense that Hydrogen and Helium would be the first elements to form in the Universe?

Chemistry
1 answer:
Illusion [34]3 years ago
8 0

Answer:

Explanation:

It makes sense because Helium and Hydrogen only hold 1 and 2 subsequent protons/neutrons and electrons. When the Big Bang happened the entire universe was so hot that it was impossible for elements to form since it was impossible for electrons to stay bound to the atoms. After a few seconds the universe began to cool enough for electrons to bond to atoms and create different elements. Since Helium and Hydrogen have 1 and 2 electrons subsequently we can assume that they were the first elements to be created. Also they are the most abundant elements in the Universe which backs up this theory.

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According to Avogadro's law, how will the number of molecules in 2 liters
dexar [7]

According to Avogadro's law, the two gases will have equal number of molecules.

<h3>Avogadro's law </h3>

From the question, we are to determine how the two gases would compare according to Avogadro's law

First, we will state the Avogadro's law

<em>Avogadro's law</em> states that "equal volume of all gases at the <u>same temperature and pressure</u> contain the same number of molecules"

Now, from the given information

We have 2 liters of hydrogen gas and 2 liters of oxygen gas at the <u>same temperature and pressure</u>

According to Avogadro's law, gases that are equal in volume and are at the same temperature and pressure will have equal number of molecules.

Hence, according to Avogadro's law, the two gases will have equal number of molecules.

Learn more on Avogadro's law here: brainly.com/question/26174006

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2 years ago
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Explanation: Hope this helps and I can get brainliest :)

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3 years ago
Chemistry course is intended for what type of students?
yulyashka [42]

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How many valence electrons does aluminum have.
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