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How should I approach answering moles calculation questions?

The key to answering any moles calculation question in chemistry is working out which equation you need to use. Generally, if moles are involved it will be moles = volume x concentration or moles = mass/R...

Answered by Jonathan S. • Chemistry tutor

2007 Views

What's the difference between limited and unlimited liability?

Limited and unlimited liability are parts of the legal identity of a business, whether that business is a new sole-trader or long established private limited company (LTD). Whether a business has limited ...

Answered by Julian T. • Business Studies tutor

2573 Views

Azmol, Ryan and Kim each played a game. Azmol’s score was four times Ryan’s score. Kim’s score was half of Azmol’s score. Write down the ratio of Azmol’s score to Ryan’s score to Kim’s score.

4:1:2

Answered by Keena P. • Maths tutor

6209 Views

How can I get the best mark in an A-Level History long answer essay?

In order to maximise your chances of getting a top mark in your long answer essay, there are a few steps to take that will put you on the right path. Firstly, revision; Secondly, essay structure; Thirdly,...

Answered by Jacob H. • History tutor

3382 Views

What is the evidence that disproves the Kekule model for benzene?

The enthalpy change of hydrogenation of benzene was shown to be less exothermic than 3 times that of hexene, therefore meaning that benzene does not contain three double bonds. X-ray imaging showed that b...

Answered by Ioana P. • Chemistry tutor

2952 Views