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Explain why increasing the temperature of a reaction increases the rate of the reaction (2)

By raising the temperature of the reaction mixture, the particles have more (kinetic) energy and so move around at a greater rate. This means there are more frequent collisions, due to the increased speed th...
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Answered by Sam H. • Chemistry tutor
3501 Views

(2x+3)/(x-4) - (2x-8)/(2x+1) = 1 Solve for x

Multiply out the denominator, take care to multiply both sides of the equation: (2x+3)(2x+1) - (2x-8)(x-4) = (2x+1)(x-4) Expand the brackets, pay attention the the signs when multiplying, expecially the nega...
LM
Answered by Lucy M. • Maths tutor
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How are different substances transported across the cell membrane?

There are several different ways substances can be transported: 1) simple diffusion, i.e. substances that tend to be lipid soluble/ non-polar and can pass easily across the phospholipid bilyar of cells. 2) f...
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Answered by Vinay S. • Biology tutor
10886 Views

There are n sweets in a bag, 6 of which are red. The rest of the sweets are blue. Jen removes 1 sweet from the bag. Jen then takes another sweet from the bag. The probability that Hannah takes two red sweets is 1/3. Show that n²-n-90=0.

We know the total number of sweets is n, and that 6 are red. When Jen takes the first sweet, the probability of it being red is [number of red sweets] / [how many there are] = 6/n . For the second sweet, the...
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Answered by Amy B. • Maths tutor
5584 Views

How do I analyse Shakespeare’s language?

When analysing Shakespeare, don’t panic if you don’t understand every word; focus instead on the overall meaning of the text. Ask yourself: What is Shakespeare trying to achieve here? Has he written this pas...
KC
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