3 years ago

Which of the following bonds is the most polar in nature:

1 answer:

6 0

The answer will be (4) HI because the greater the difference of the bonds in electronegativity, the more polar a bond is.

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If 25.8 grams of BaO dissolve in enough water to make a 212-gram solution, what is the percent by mass of the solution?

Igoryamba

The correct answer is 12.2% BaO.

The solution is found by dividing the mass of the BaO, which is 25.8 grams, by the total mass of the solution, which is 212 grams, then multiplying it by 100 to get the percentage:
$\frac{25.8}{212}*(100) =12.2%$

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2 years ago

Explain why substances with a lower boiling point are removed near the top of a petroleum fractional distillation tower.

Anon25 [30]

The lighter components are able to rise higher in the column before they are cooled to their condensing temperature, allowing them to be removed at slightly higher levels.

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