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When do I use "tu" and when do I use "vous"?

Explanation: Both "tu" and "vous" mean "you" but "tu" is used for the singular of "you" and "vous" is used in two cases: the plural of "you&qu...
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Answered by Mathilde M. • French tutor
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What is the difference between covalent compounds and ionic compounds?

Covalent compounds contain atoms that share electrons - for example, hydrogen chloride (HCl) share electrons (one from each atom), in order to achieve a full set of 8 electrons in their outer shell. Covalent...
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Answered by Beth S. • Chemistry tutor
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What are the products of digestion of a) proteins, b) fats and c) carbohydrates?

a) Proteins, which are highly-folded poplypeptides, are broken down into shorter polypeptides, and then into amino acids, by protease enzymes. b) Fats, or lipids, are broken down by enzymes such as lipase in...
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Answered by Beth S. • Biology tutor
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What is the function of enzymes and give an example of one.

Enzymes are biological catalysts - they 'speed up' biological reactions - essentially increasing the rate at which they occur. Pepsin is an enzyme that catalyses the digestion of proteins in the stomach into...
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Answered by Beth S. • Biology tutor
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Two dice are thrown at the same time. What is the probability that the sum of the numbers on the dice is greater than 7?

The answer would be 5/12. This is because a sum greater than 7 appears 15 times out of a given sample space of 36. Hence the probability would be 15/36 = 5/12
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