Top answers

Find the integral of xe^(-2x) between the limits of 0 and 1 with respect to x.

We can identify xe^(-2x) as a product and hence we will most probably need to use integration by parts. We then set u = x and v' = x^(-2x). It is important to do it this way round so that when we differentia...
TB
Answered by Tom B. • Maths tutor
8080 Views

In which way is a supervolcano different from a volcano and what are the likely consequences of a super volcano eruption?

Super volcanoes are much bigger than normal volcanoes, usually erupting at least 1000 cubic km of material in a single event and far less frequently than normal volcanoes. Normal volcanos erupt nearer to 1 c...
JH
Answered by Jack H. • Geography tutor
7654 Views

When is the subjunctive triggered?

The subjunctive is known as mood rather than a tense in French as it denotes emotions such as hope, fear, desire as well as uncertainty which are triggered through certain verbs and impersonal phrases. The s...
DA
Answered by David A. • French tutor
3623 Views

Why is the Harber process performed at higher temperatures rather than low?

The forward reaction in the Harber process is exothermic. Following Le Chatelier's principle, the reaction would therefore be favoured by using lower temperatures, increasing the yield of ammonia at equilibr...
TM
Answered by Thomas M. • Chemistry tutor
5628 Views

How do you test for alkenes and alkanes?

Mix with bromine water (orange), if a double bond is present (alkenes) then the bromine water will be decolourised.
EP
5988 Views