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andreyandreev [35.5K]
3 years ago
13

Question 13 of 25

Chemistry
1 answer:
avanturin [10]3 years ago
7 0

Answer: is A

Explanation:

how becuase i just take the test

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Hydrogen bonds form between neighboring water molecules because of:
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*A & B*

Answers A & B are not possible, as Hydrogen “bonds” are intermolecular forces and do not actually involve transfer or sharing of electrons.

*C & D*

Viscosity and surface tension are not the answer as they are not specific enough to the question.

*E*

Polarity of water molecules is the correct answer, as water molecules are highly polar. The partial positive of the Hydrogen on one water molecule is highly attracted to the partial negative of the Oxygen (due to its lone pairs) on another water molecule.
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The lowest layer of Earths atmosphere is the__
alina1380 [7]

Answer:

Troposphere

Explanation:

The troposphere is the lowest layer in the atmosphere, and where all the weather occurs. After the troposphere, there's the stratosphere, mesosphere, thermosphere, and exosphere.

I hope this helps!

7 0
3 years ago
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A student has a sample of isopropanol (C3H7OH) that has a mass of 78.6 g. The molar mass of isopropanol is 60.1 g/mol. How many
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78.6 g (1mol/60.1 g)= 1.31 moles of isopropanol
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25.4 g of salt was dissolved in distilled water to make 425 mL of solution.
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Use 25.4 g/ 425ml x 100 5.94 percent
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What do scientists use the term “light-year” to describe?
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Answer:

Astronomers measure distance in space or the distance light travels in one Earth year.

" A light-year is how astronomers measure distance in space. It's defined by how far a beam of light travels in one year – a distance of six trillion miles."

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