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What are the differences between sigma and pi bonds?

A sigma bond can be between s or p orbitals whereas a pi bond can only be between p orbtials In signma bonds, atomic orbitals overlap along bonding axis, in pi bonds atomic orbitals overlap above and below b...
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Answered by Philip K. • Chemistry tutor
15782 Views

Express x^2 - 7x + 2 in the form (x - p)^2 + q , where p and q are rational numbers.

This is an example of completing the square.If we expand (x - p)^2 + q, we will have x^2 -2px + p + q.Now we can use algebra to work out what p and q are from the following equation. x^2 - 7x + 2 = x^2 -2px ...
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Answered by Catherine P. • Maths tutor
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Expand (x+3)(x+1).

The Ancient Greeks perceived a much stronger relationship between Algebra and Geometry than we do today and because of that they often utilised Geometry to help think about, and solve, certain algebraic ques...
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Answered by Daniel C. • Maths tutor
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Describe what can be used to determine the time of death of a corpse

there are five different distinct methods whihc can be used to determine time of death: Body tempreture: The body cools after death as there are no heat producing metabolic reactions. The drop in tempreture ...
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Answered by Daniella P. • Biology tutor
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Briefly describe Piaget's theory of child development.

In essence, there are two main theorists behind the stages of child development: Piaget and Vygotsky. Piaget's theory is based on the assumption of the existence of schemas. Schemas are defined by Piaget as ...
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Answered by David W. • Psychology tutor
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