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How do I use the perfect and imperfect tenses?

There are two different kind of past tense in French: the Perfect Tense and the Imperfect Tense. Both tenses have different uses. 1. Perfect Tense (Passé Composé): Using the Perfect Tense The perfect tense i...
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Answered by Laura V. • French tutor
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If you had to give one piece of advice about writing personal statements what would it be?

There are many handy tips to consider when writing your personal statement, but if I were to select just one it would be to ensure that each and every sentence is unique to you. Ask yourself: Could any other...
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Why is a H+ ion referred to as a proton?

An atom of hydrogen contains 1 proton, 1 electron and 0 neutrons. When hydrogen loses an electron to become H+ only a proton remains. We can work out the number of neutrons an atom has by deducting the atomi...
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Answered by Oliver H. • Chemistry tutor
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What happens when you heat Calcium Carbonate?

First can you tell me what kind of reaction is this reaction? Thermal decomposition Secondly can you tell me the products of this reaction and have a go writing the formulae? CaCO 3 -> CaO + CO 2
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Answered by Kyle P. • Chemistry tutor
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Explain how smoking can increase blood pressure?

There are two main reasons that smoking can increase blood pressure: Cigarette smoke contains nicotine which, once inhaled, can enter the bloodstream and cause the release of adrenaline which increases the h...
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Answered by Oliver H. • Biology tutor
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