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Explain Optical Isomerism

Optical Isomerism is a type of stereoisomer. The molecule has a chiral centre which is where the are four different atoms attached to the central atom. This means that they become mirror images of each ...

Answered by • Chemistry tutor

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Select two works of art, each by a different artist, and comment on how each artist has responded to the time in which they lived.

Both Cecil Collins (1908-1989) and Julian Trevelyan (1910-1988) and their respective works The Quest (1938) and Rubbish May be Shot Here (1937) respond directly to the period in which th...

Answered by Gregory S. • History of Art tutor

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For what values of x is Cosh^2(x) - Sinh(x) = 5 Give your answer in the form of a logarithm

Substitute Cosh^2(x) = 1 + Sinh^2(x) into the starting equation (This formula should be known)Make 0 the subject 3Sinh^2(x) - Sinh(x) - 2 = 0Substitute u = Sinh(x) and solve for uSubstitute Sinh(x) back i...

Answered by Liam B. • Further Mathematics tutor

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Simplify 3/(x+1) + (3x-9)/2 = 1, to get a quadratic equation in the format ax^2 + bx + c = 0.

First, add the two fractions together. The common denominator is 2(x+1), or 2x+2. The first fraction becomes 6/(2x+2). The second fraction becomes (x+1)(3x-9)/(2x+2), or (3x²-6x -9)/(2x+2). Add...

Answered by • Maths tutor

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How do I know if a curve is convex?

The second differential of the equation of the curve will be positive if it is convex. This is because, by definition, convex means that the gradient of a curve is increasing. To find the gradient of a cu...

Answered by Josh W. • Maths tutor

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