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Pythagoras' Theory explains that the length of sides in a right angled triangle are related. This means we can use the length of two sides to find that of the third!

The relationship he found is a<...

Le vacanze sono molto importanti per me perché mi piace molto viaggiare. Ogni estate, parto in vacanza con i miei genitori per due settimane. L'anno scorso siamo andati in Italia. La mia città preferita è...

We need to think about the number of atoms of each element in the reactants and ensure these are the same in the products.

This is the basic UNBALANCED equation.

C₄H₁₀ ...

To answer this we need to use the equation Q = MC(T1-T2)

We want to know what T2 is (ie the temperature after one hour).

So rearrange the equation to get T2 = T1 - Q/MC

No substitute ...

There are many different ways in which a semicolon can be used. 

The first, and the most common is to link two similar clauses together. For example, you could say, 'The lady had a cat. The cat was...