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melamori03 [73]
2 years ago
11

What is true about equinox? A.Day and night are equal in length. B. Shadows in the afternoon are longest. C. Nights are longest.

D. Days are shortest.
Please hurry ill give Brainleist
Chemistry
1 answer:
Natasha_Volkova [10]2 years ago
8 0
An equinox is “the time or date when the sun crosses the celestial equator and when day and night are of equal length”

the answer would be A. Day and Night are equal in length
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Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 1.40 L of solution.
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Answer:

0.393 mol/L.

Explanation:

The following data were obtained from the question:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity of a solution is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

Molarity = mole /Volume

With the above formula, we can obtain the molarity of the NaOH solution as follow:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity = mole / Volume

Molarity of NaOH = 0.55 / 1.4

Molarity of NaOH = 0.393 mol/L

Thus, the molarity of the NaOH solution is 0.393 mol/L.

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Answer:

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