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zavuch27 [327]
2 years ago
5

How many grams of Br are in 445 g CaBr2 ?

Chemistry
1 answer:
aliya0001 [1]2 years ago
8 0

Explanation:

The mass of bromine is 79.904, and since there are two of them in the Calcium Bromide molecule, we'll multiply it by 2 to get 159.808. Dividing that by the full mass of the molecule then multiply it by 100 will give you the answer.

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Covalent bonds share electrons, whereas ionic bonds exchange electrons. Covalent bonds have an electronegativity of 0.0-1.7 (0.0-0.3 is a nonpolar covalent bond and 0.3-1.7 is a polar covalent bond). Ionic bonds are bonds that go beyond the electronegativity of 1.7 to 4.0 (1.7-4.0).

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the vapor pressure of a naqueous solution is found to be 24.9 mmgh at 25C. what is the mole fraction of solute in this solution?
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Explanation:

To solve this we use the colligative property of lowering vapor pressure.

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Where ΔP = P' (Vapor pressure of solution) - P° (Vapor pressure of pure solvent)

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8 0
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a que grupo en la tabla periodica pertenece el magnesio, potasio, calcio, azufre, oxigeno y el cloro?
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3 years ago
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