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Describe and explain the trend in boiling points in the first four hydrogen halides

HF has the highest boiling point this is followed by HI, then HBr with HCl having the lowest boiling point of the four molecules. This is because HF is able to form Hydrogen bonds whereas the other three ...

Answered by Theo M. • Chemistry tutor

54540 Views

Differentiate xcos(x) with respect to x.

How do we know which method of differentiation to use in this example?
Well in ‘xos(x)’, we have 2 different functions: ‘x’ and ‘cos(x)’. Therefore, we must differentiate using the p...

Answered by Oliver S. • Maths tutor

5414 Views

'Othello's virtue and valour ultimately make him admirable.' To what extent to do you agree with this view? (AQA A level English Literature question)

As a Venetian soldier, Othello holds a great deal of valour within his society, despite being an outcast due to his race. However, his virtue and valour are greatly undermined when he is prayed on by Iago...

Answered by Katie I. • English tutor

8326 Views

What 2 reagents are required to form NO2+ (state conditions)? Write an equation for this reaction.

Concentrated sulphuric acid (H₂SO₄) and concentrated nitric acid (HNO₃).H₂SO₄ + HNO₃ -> HSO₄^- + H₂NO

Answered by Eleanor C. • Chemistry tutor

3198 Views

Describe the process of ultrafiltration in the Kidneys.

Ultrafiltration occurs in the nephron, the functional unit of the kidney. Blood enters a coiled network of vessels called the glomerulus from the afferent arteriole at a high hydrostatic pressure. The glo...

Answered by Matthew M. • Biology tutor

21589 Views