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masha68 [24]
3 years ago
9

An unknown substance has a density of 56 g/cm3. Its volume is 3.5 cm.

Chemistry
1 answer:
postnew [5]3 years ago
3 0

Answer:

<h3>The answer is 196 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 56 × 3.5

We have the final answer as

<h3>196 g</h3>

Hope this helps you

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Nitrogen has 5 electrons in it's valence shell and octet rule states that the valence shell must have 8 electrons. To satisfy that, Nitrogen gains 3 electrons that are negatively charged.Therefore, it gets a negative charge.




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<h3>Answer:</h3>

1.85 M

<h3>Explanation:</h3>

<u>We are given;</u>

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But, 1000 mL = 1 L

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We are required to calculate the molarity of the solution;

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Molarity = Moles ÷ Volume

In this case;

Molarity = 0.50 moles ÷ 0.27 L

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Explanation:

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