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How can chromatography be used to identify substances?

Chromatography can be used to determine the RF value of an unknown substance. This RF value when cross-referenced with already known RF values can then be used as a guide to find out a potential range of ...

Answered by Sam W. Chemistry tutor
10210 Views

differentiate the function (x^2 +5/x + 3) with respect to x

2x + 5 lnx

Answered by Maths tutor
2291 Views

What on Earth is the subjunctive?

It can be hard for native English speakers to fully grasp the subjunctive mood, because it’s so archaic in English. Firstly, it’s a mood and not a tense. It emphasises that somewhere in your sentence ther...

Answered by Henry C. French tutor
1433 Views

At a concert, the number of men, women and children can be expressed with the following ratio: 6:11:4 There were 6525 more women than men. How many children were at the concert?

We know there are 6525 more women than men. We can deduce that 5 'parts' = 6525 as 11-6=5If 5 parts = 6525. 1 part = 6525/5 = 1305.We know that 4 parts are children so, 1305 * 4 = 5220Alternatively, once ...

Answered by Sandesh R. Maths tutor
4671 Views

How far does the power of the state explain the decline of Chartism by 1850?

Give three possible explanations always including the one in the question e.g. power of the state; social and economic divisions; and problems with Chartism itself.Introduce all three factors and your arg...

Answered by History tutor
3843 Views

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