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What is the difference between London dispersion forces and hydrogen bonds?

Both are a type of inter molecular forces which means they act between more than 1 molecules. Do not confuse them with intra molecular forces acting within 1 molecule. London dispersion forces act between al...
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Answered by Daria S. • Chemistry tutor
29436 Views

Find all real solutions of (x^2 +4x +3)^(x^2 -6x+8) = 1

Rewrite as a^b = 1, where a = x^2+4x+3 and b = x^2-6x+8List the cases for which a^b = 1Case 1: a = 1:So x^2+4x+3=1 => x^2+4x+2=0 => x=-2 +/- sqrt(2)Case 2: b=0, a ≠ 0:b=(x-4)(x-2) => x = 2, x=4Check...
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Answered by Nicholas M. • PAT tutor
1526 Views

Rationalise the surd: 2/root(x)

To rationalise a surd means to manipulate a fraction involving terms which are being square rooted so that no term in the denominator is being square rooted. For this example 2/root(x) we multiply the fracti...
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Answered by Daniel T. • Maths tutor
11217 Views

What did you do over the holidays?

This question helps the student practice using the past tense and using vocabulary related to travel and hobbies. Example Answer:Ces dernières vacances je suis parti en Espagne avec deux familles- la mienne ...
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Answered by Beatrice D. • French tutor
4132 Views

How do I structure an A level exam response?

An A level question requires a sound structure in order for the content to answer the question. The standard point, evidence, explain structure can be developed in order to meet the required assessment objec...
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Answered by Tom M. • English tutor
4189 Views