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How is crude oil separated?

Crude oil is separated by fractional distillation. The mixture of components is put in the distillation tube and heated. The different liquids start to evaporate and move up the fraction Column. The componen...
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Answered by Lydia W. • Chemistry tutor
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What shape does XeF4 take?

Molecular shape depends on the number of electron pairs around the central atom. Electrons are negatively charged and so each of the electron pairs will repel each other. Lone pairs tend to repel more than b...
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Answered by Laura S. • Chemistry tutor
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During fractional distillation, what are we seperating and how are we seperating them?

During fractional distillation, the process of heating a mixture is used to seperate fractions. Each fraction has a different boiling point. As we begin to heat the mixture, the substances that have a lower ...
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Answered by William T. • Chemistry tutor
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Explain why the structure of benzene cannot be acurately described using Kekule's structure (cyclohexa-1,3,5-triene).

During analysis of benzene we see that the bond lengths and angles are all the same. In the theoretical molecule however, due to the differing lengths of bonds between double and single bonds, the bond lengt...
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Answered by William T. • Chemistry tutor
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How do I know the formula for salts formed in a reaction?

Example: NaCl. Every element in group 1, including sodium, has one electron in its outer shell and it wants to lose this one electron to have only full shells. Everything in group 7, including chlorine, has ...
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Answered by Lauren T. • Chemistry tutor
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