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What is enthalpy and how can it be calculated?

Enthalpy is a thermodynamic property that chemists can use to describe the heat energy transferred throughout a chemical reaction. It is especially useful given that it is defined as "a measure of heat ...
Answered by • Chemistry tutor
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What is the subjunctive and when should I use it?

The subjunctive is a grammatical mood which expresses subjectivity, uncertainty, emotion, and hypothetical scenarios. Unlike the indicative mood which is used affirmatively - 'je pense que c'est chouette !' ...
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Answered by Molly H. • French tutor
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The lines y = 3x² - x + 5/2 intersects the line y = x/2 +7 at two points. Give their coordinates. Show your working

y= 3x 2 -x +5/2 = 0.5 x +76x 2 -2x +5 = x+146x 2 - 3x -9 = 0 = 2x 2 - x -3(2x-3)(x+1) = 0 x = -1 or x = 1.5y = 6.5 or y = 7.75
Answered by • Maths tutor
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How should I structure my essay?

Your essay should be six paragraphs long, with four main paragraphs, one introduction paragraph and one conclusion paragraph.In your introduction, you should answer the question, using the question words, an...
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Answered by Alasdair L. • English tutor
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A) The compound butan-2-ol reacts with acidified potassium dichromate(VI) to form a new compound. Give the IUPAC name of the Product. B) 2,2-dimethyl butan-2-ol was subjected to the same conditions. State and explain the outcome

A) butan-2-one. [1 mark] B) 2,2-dimethyl-butan-2-ol is a tertiary alcohol so it is not oxidised and would be recovered unreacted [2 marks]
Answered by • Chemistry tutor
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