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A plane flew from Frankfurt to Hong Kong. The flight time was 10hours 45minutes. The average speed was 852km/h. Work out the distance the plane flew.

Approaching this question, I firstly begin by reading the question carefully and determining what it is that needs to be calculated. The next stage is writing down any important information stated in the que...
CO
Answered by Charlotte O. • Maths tutor
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When do halogens displace each other in solutions of their salts?

More reactive halogens displace less reactive halogens. The more reactive halogens are those at the top of the group, as their outer electron shells (negatively charged) are closer to the nucleus (positively...
AP
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How do I test for the presence of starch in food?

The iodine test - use a dropper to apply a little iodine onto a small sample of the food. If starch is present, the iodine will change colour from orange/brown to blue/black.
AP
Answered by Anastasia P. • Biology tutor
11332 Views

How do I know which is the object and which is the subject of a sentence?

Basically nouns can be the object or subject of a sentence (as well as other things but we can ignore those for now). The easiest way to decide whether a noun is the subject or the object is to decide what r...
GM
Answered by George M. • German tutor
3774 Views

Explain the philosophical problem of evil

In an essay question, you will most likely be asked to provide a very brief description of this problem, before going on to explain solutions that have been offered to the problem by various philosophers. In...
BL
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