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Step 1:

• Look at the molecular formula of the hydrocarbon you have been given.

• (This is the formula that tells you exactly how many hydrogens and ...

The Roman forum was both a political and religious centre. Various temples and shrines improved the appearance of the forum and served the dual purpose of being used for both religious and political purpo...

The first thing to do in this problem is to expand the brackets. This means we times whatever is in the bracket by the number on the outside, in this instance the number is 3. We do not worry about the ri...

When dividing by a fraction, it is actually a multiplication. All you need to do is flip the second fraction over. This is known as the reciprocal. In this example the fraction we want to flip is 7/12. Fl...

The most important thing is really to practice and practice even more! Practice with literally anyone - your parents, teachers, friends, neighbours and even yourself in from of a mirror. A good book that ...