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In school some students are reluctant to speak up and ask questions if they don't understand or if they miss something. This reluctance is entirely understandable but it can significantly impede student understanding and progress.
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Schools and teachers are busy. Individual access to a teacher is necessarily limited and queries or misunderstandings can go unaddressed.
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One to one tuition with Goldhill Tutors gives students exclusive uninterrupted access to highly experienced subject specialists. Any questions can be dealt with in detail.
Schools and teachers are busy. Individual access to a teacher is necessarily limited and queries or misunderstandings can go unaddressed.
Goldhill Tutors actively encourage students to ask, challenge and question. Students are asked to bring or submit in advance of their tutorials, any queries, problems and special requests. This enables a genuinely bespoke experience for the student.
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Crude oil is separated into its different components (fractions) by a process known as fractional distillation. The mixture of hydrocarbons is heated as it enters the fractionating column. This is a large tower which is much hotter at its base (~ 370oC) than at its top. The fractions which boil the most easily ( bpt < 40oC ) remain gaseous and are tapped off from the top of the tower. Those fractions which have higher boiling points will condense and be tapped off at the higher temperatures lower down the column. Since each fraction has a different boiling point they will condense at different levels in the column and are therefore separated from each other.