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How does the structure and bonding of alkanes differ to that of alkenes?

In alkanes, such as propane, the carbon atoms are sp 3 hybridised, meaning that each carbon atom has 4 sp 3 molecular orbitals associated with it available for covalent bonding. These form 4 sigma bonds (bon...
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Answered by Edward G. • Chemistry tutor
12926 Views

Consider the arithmetic sequence 5,7,9,11, …. Derive a formula for (i) the nth term and (ii) the sum to n terms. (iii) Hence find the sum of the first 20 terms.

We can easily identify the first term (5) The common difference can be found by subtracting the n th term from the (n+1) th term 7-5=9-7=11-9=2 Therefore: U 1 =5 and d=2 The IB formula booklet provides the g...
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Answered by Jan Niklas F. • Maths tutor
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How to structure an answer to the question: 'Assess the view that Lenin’s rule between 1917 and l924 was merely a brutal dictatorship'.

First, we could ask if we both think that Lenin’s rule can simply be reduced to a ‘brutal dictatorship’. Do we not need to be more specific if we are going to properly understand the specificities of Russian...
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Answered by Edward N. • History tutor
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State the key assumptions and characteristics of a competitive market and outline the difference between the short-run and the long-run.

Perfect competition is a market structure defined by several key assumptions: a large number of firms, identical (homogenous) products, no barriers to entry (free entry and exit), perfect information and per...
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Differentiate y=(3x-1)/(2x-1)

First, recognise that the function is a fraction and recall the quotient rule. y=u/v dy/dx=(vu'-uv')/v 2 , where u' and v' is the derivative of u and v respectively. Then, apply the rule. u=3x-1, v=2x-1 u'=3...
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Answered by Martin M. • Maths tutor
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