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When and how do I use the subjunctive?

The subjunctive is a tense that is used when there is an element of doubt or uncertainty. Before looking at when the subjunctive tense is used, it would be useful to look at how verbs are conjugated in the s...
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Answered by Emily B. • French tutor
2649 Views

In order to find the [H+] ion content of H2SO4 (Sulphuric Acid), why must you divide by two after using the formula for pH calculation?

This is because H2S04 is a diprotic acid. If we look at how the acid dissiociates, we can see that: H 2 SO 4 ----------> 2H + +SO 4 2- Since there are two H + ions dissociating, using the formula for pH w...
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Answered by Jamil J. • Chemistry tutor
16008 Views

I don’t think I’m smart enough for this course, should I drop it?

Maths A level is one of the hardest a levels there is, so it’s only natural that you’re going to be finding it tough. The jump from GCSE to A level is real, and if you haven’t done a further maths qualificat...
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Answered by Hope S. • Maths tutor
6345 Views

Find the minimum value of the function, f(x) = x*exp(x)

The minimum value lies where the tangent to the curve has a gradient of zero and the curve approaching from both directions increases in value. This is done by finding the first and second derivatives of the...
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Answered by Robin T. • Maths tutor
4147 Views

Assess the reasons for the fall of the Romanov dynasty in February 1917

Firstly analyze what the question is truly asking for and address the key words and terms. Begin with a brief introduction that places the question historically in the context of the period, and then look to...
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Answered by Bruce E. • History tutor
8111 Views