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AlexFokin [52]
3 years ago
7

Which term is used to describe the day of June 21 at north pole in terms of daylight and darkness

Chemistry
1 answer:
UkoKoshka [18]3 years ago
8 0
<h3><u>Answer;</u></h3>

Summer solstice

<h3><u>Explanation;</u></h3>
  • <em><u>Summer solstice refers to the two moments during the year when the path of the Sun in the sky is farthest north in the Northern Hemisphere (June 20 or 21) or farthest south in the Southern Hemisphere (December 21 or 22)</u></em>.
  • The summer solstice occurs at the moment when the earth's tilt toward from the sun is at a maximum.
  • Therefore, on the day of the summer solstice, the sun appears at its highest elevation with a noontime position that changes very little for several days before and after the summer solstice.

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3 years ago
Calculate the volume of a 0.5M solution containing 20g of NaOH
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Answer:

1L

Explanation:

First, let us calculate the number of mole present in 20g of NaOH. This is illustrated below:

Mass = 20g

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Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole of NaOH = 20/40 = 0.5mol

From the question given, we obtained the following data:

Molarity = 0.5M

Mole = 0.5mole

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