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Ethane is an organic compound. Please (a) write down the molecular formula of ethanoic acid and (b) verify the type of organic compound ethanoic acid belongs.

a) C2H6 b) Carboxylic Acid
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Answered by Sum I F. • Chemistry tutor
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Solve the simultaneous equations: x^2 + y^2 = 29 and y - x = 3

To solve these equations we need to eliminate one of the variables, so make y the subject of the second equation: y = x + 3. Now y can be substituted into the first equation: x^2 + (x+3)^2 = 29. Expanding (x...
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Answered by Trisha G. • Maths tutor
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What is a conservative plate boundary and what's an example?

The San Andreas Fault is an example of a conservative plate boundary. Here, the 2 plates slide past each other in opposite directions, generating friction as they do. They can also move in the same direction...
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Answered by Sarah C. • Geography tutor
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What is Lamarck's theory?

Lamarck's theory suggests that changes that are obtained during a lifetime can be passed on to the offspring of that creature. The changes typically favour survival for the animal. For example, if a giraffe'...
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Answered by Sarah C. • Biology tutor
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How is crude oil separated into fractions?

The crude oil is placed into large tanks, which are heated at the bottom, creating a gradient whereby the column is cooler at the top. The heat causes the oil to evaporate, and each fraction will reach a dif...
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Answered by Sarah C. • Chemistry tutor
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