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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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Please give two examples on why deposition occurs.

Deposition can occur firstly as a result of gravity settling. This happens when the energy required to transport sediment becomes too low. Large sediment is often deposition first. Deposition can also occur ...
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Answered by Olivia W. • Geography tutor
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How can the y=sin(x) graph be manipulated?

First, lets sketch a simple y=sin(x) graph between 0 and 2Pi radians.There are 4 different places a number could be put into this equation to affect the y=sin(x) graph.y=2sin(x) will stretch the graph to be ...
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Differentiate y=x^3ln2x

PRODUCT RULETherefore dy/dx=(x^3)(1/2x)(2)+(ln2x)(3x^2)=x^2+3x^2ln2x
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Answered by Hannah A. • Maths tutor
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What method should I use to differentiate equations with an x as the power of a number. E.g. 2^x

Take the log of both sidesln(y) = ln(2^x)This can be re-written as:ln(y) = ln(2)*xTake the exponent of both sidese^ln(y) = e^(ln(2)*x)Which gives:y = e^(ln(2)*x)Since ln(2) is a constant, apply the usual met...
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Answered by Billy T. • Maths tutor
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