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How do you test for alkenes and alkanes?

Mix with bromine water (orange), if a double bond is present (alkenes) then the bromine water will be decolourised.

Answered by Elizabeth P. • Chemistry tutor

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What is the difference between meiosis and mitosis?

Meiosis - cell division to form gametes (sex cells), each gamete contains half the number of chromosomes than in a normal cell. Mitosis - division of body cells during normal growth, each cell contains a ...

Answered by Elizabeth P. • Biology tutor

4863 Views

What are the key themes in Wuthering Heights and which do you think is the most important?

Themes include any from the given list: Supernatural - seen most powerfully when Heathcliff is grieving Catherine when he asks for her spirit to walk the earth. Nelly refers to Heathcliff as many things i...

Answered by Olivia S. • English Literature tutor

9096 Views

y=e^(2x) - x^3. Find dy/dx. (please note this is "e to the power of 2x, minus x cubed")

The rules to know are 1) when differentiating e to the power of x... be it 2x or 100x... you bring down the number in front of x, and leave the power as it is. in our case e^(2x) goes to 2e^(2x).

Answered by Toby M. • Maths tutor

7997 Views

Solve the following for X and Y: 2y+4x=14 and x-y=-1

Firstly, Take equation 1 (2y+4x=14) and divide it all by 2. This gives y+2x=7. Next make Y the 'subject' AKA put it on it's own. To do this Subtract 2x from both sides. Now we have Y=7-2X. Here you can se...

Answered by Toby M. • Maths tutor

5048 Views