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Q: Give examples of how the human body maintains homeostasis when we exercise.

A: When we exercise the tissues of our body have an increased requirement for oxygen. The body facilitates this by increasing the respiratory and heart rate, thereby increasing the rate of gas exchange in th...
AM
Answered by Amy M. • Biology tutor
3568 Views

I keep running out of time in the exam, what should I do?

It's really easy to do in history; you have so much to say and so little time in which to say it. Organisation is key here, both in your revision and your exam method. It is worth identifying the key events ...
HD
Answered by Hannah D. • History tutor
7478 Views

What if I can't find an example of where a theory could be applied in the exam texts?

Before analysing a text, it's always a good idea to look at the contextual information that you have been given and come up with some theories which are likely to be relevant (e.g. if it's a transcript, Gile...
EH
3174 Views

If f(x)= ( ((x^2) +4)(x-3))/2x find f'(x)

Tackle differentiation questions in two parts: First put it into the simplest for possible for differenciation, then perform the differenciation. So for this equation you should first expand the top brackets...
AB
Answered by Alex B. • Maths tutor
4275 Views

For the following reaction, you obtained 7.2 g of sodium sulfate, starting from 10 g of sulfuric acid. Sodium hydroxide is in excess. What is the % yield? H2SO4 + 2NaOH → Na2SO4 + 2H2O

Identify the limiting reagent: you have been told sodium hydroxide is in excess, so you know sulfuric acid is the limiting reagent Calculate the moles of the limiting reagent: n = m/M. m = 10 g , M = (1 x 2)...
RB
Answered by Rachel B. • Chemistry tutor
3790 Views