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Describe the effects of changing the temperature on a reaction using Le Chatelier's princriple

Temperature: Exothermic reaction= energy given out to surroundings. Endothermic reaction= energy taken in from surroundings. If say a reaction runs at 300 degrees and we increase the temperature to 500 degre...
BV
2659 Views

How much of my personal statement should be demonstrating knowledge and how much should be past experiences?

Ideally, the two would be able to connect in some way. For example, past experiences volunteering at the local museum could highlight an aspect you particulalry enjoyed in a history lesson, or brought home t...
MB
2598 Views

How can I include context in my writing in a natural way?

One of the key points to remember when including context around the texts you are writing about, is to avoid simply attaching it to the end of a sentence. To help weave the context into your essays naturally...
KL
5624 Views

Find the value of 4a + 3b when a=2 and b=5

This question is asking us to place a number in the place of their corresponding letter, so as the letter a is attached to the number two, whenever we see the letter a in the equation we would replace it wit...
RM
Answered by Roisin M. • Maths tutor
15678 Views

Express 5cosx - 3sinx in the form Rcos(x+a).

cos(x+a)=cosxcosa-sinxsina so cosa=5 sina=3 which means tana=3/5 a=0.54 RADIANS R=sqrt(5 2 +3 2 ). =sqrt(34) so sqrt(34)cos(x+0.54)
EH
Answered by Elizabeth H. • Maths tutor
16528 Views