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What is a titration?

Titrations are used to make soluble salts (remember solubility rules) from an acid and an alkali. There are no solids involved in this reaction and the solutions made are colourless so there is no way of tel...
BH
Answered by Beatrix H. • Chemistry tutor
3926 Views

Describe and explain two features of starch that make it a good storage molecule.

One feature is its compact shape. Starch molecules consists of two components: Amylose and Amylopectin. Amylose is the straight chained part and amylopectin is the branch chained part. Both these structures ...
IB
Answered by Iulia B. • Biology tutor
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How should we use quotations in an exam?

You should close read each quotation, picking each one apart to show your ability for deep analysis. Do not just slot in as many quotations as you can to show you how well you have memorised them, but instea...
EG
Answered by Elicka G. • English tutor
2214 Views

integrate (4cos^4 x -4cos^2x+1)^1/2

we must integrate (4cos 4 x-4cos 2 x+1) 1/2 factorise first ((2cos 2 x-1) 2 ) 1/2 this becomes (2cos 2 x-1)which equals cos 2xthe integral of cos 2x is1/2 sin 2x + C
DW
Answered by Dominic W. • Maths tutor
3922 Views

What is the lowest common multiple and the highest common factor of 120 and 150?

To approach a problem like this, we must first break down our number into a multiplication of prime factors (i.e. we can make our number by multiplying numbers 2,3,5,7 etc together). This is best done with a...
DW
Answered by Dominic W. • Maths tutor
7090 Views