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NaOH has a high melting point and conducts electricity in solution. H2O has a low melting point and does not conduct electricity. Explain, using the structure of each, why this is the case.

NaOH is an ionic compound with strong electrostatic attraction between the oppositely charged ions. This means the melting point is high, as the bonds ne...

Answered by Sophie T. • Chemistry tutor

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solve two variables quadratic equation system 2x-y=1 10x^2-y^2-x+1=0

To solve the equation, we need to try to make the second equation all in x first.From the first equation 2x-y=1,we could rewrite it into y=2x-1,Then we put y=2x-1 into the quadratic equation 10x²

Answered by KEYU M. • Maths tutor

3245 Views

Form the equation for the complete burning of C3H8

Firstly, note that the reaction is complete burning. This means there is no carbon monoxide produce, only carbon dioxide.Secondly, we should know that all simple combusti...

Answered by Edward R. • Chemistry tutor

2589 Views

Sketch and label the graph of y=x^2 -5x+6

First we can try and factorise the expression:So we want to find 2 numbers that multiply to 6 and add to -5... after some thinking we get -2 and -3. The factorised expression is y=(x-2)(x...

Answered by Eamon G. • Maths tutor

5971 Views

How should I structure an essay?

1.Introduction- set out 'big ideas' and your argument which then should be evident as the essay progresses. Shouldn't be too wordy, short concise and clear. 2.Paragraph O...

Answered by • English Literature tutor

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