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brilliants [131]
3 years ago
13

Which element, represented by X, reacts with fluorine to produce the compound XF2?

Chemistry
1 answer:
mixer [17]3 years ago
4 0
The answer is (3) magnesium. Aluminum usually has valence of +3 and Sodium usually has valence of +1. Argon is usually not react with others. Because it is already stable with 8 electrons at the outer shell.
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Name:
Liono4ka [1.6K]

Answer:

1. 505g is the mass of the aluminium.

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1. To solve this question we need to find the volume of the rectangle. With the volume and density we can find the mass of the solid:

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187cm³ * (2.702g/cm³) = 505g is the mass of the aluminium

2. When the temperature of a liquid increases, the volume increases doing the density decreases because density is inversely proportional to volume. And works in the same way for gases because the temperature produce more collisions and the increasing in volume.

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