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1a) Describe the difference between strong and weak acids. 1b) HCl is a strong acid. Draw the spin diagram for a chlorine atom.

1a) Strong acids fully dissociate in water, whereas weak acids only partially dissociate in water - thus forming an equilibrium mixture.
1b) See diagram.

Answered by Chemistry tutor
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Outline two cultural factors that may affect ethnic differences in educational achievement. (4 marks)

Remember this is a four mark question, which means two factors (one mark each) and one explanation for each one. Many answers will be accepted.1 - language. Some pupils may speak a different language at h...

PM
3849 Views

A curve is described by f(x) = x^2 + 2x. A second curve is described by g(x) = x^2 -5x + 7. Find the point (s) where both curves intersect.

To find the points where two curves meet a difference function needs to be calculated. This function is formed by subtracting one function from the other: d(x) = f(x) - g(x). It also works the other way a...

Answered by Maths tutor
2975 Views

What keys can I modulate to when harmonizing a Bach chorale?

There are 5 keys which a Bach chorale could modulate to*. Two of these are the dominant and the subdominant (based on the 5th and 4th degree of the home key respectively). If the home key is major then th...

AK
Answered by Aaron K. Music tutor
4941 Views

A curve C has equation y = 3x^4 - 8x^3 - 3. Find dy/dx and d2y/dx2. Verify C has a stationary point at x = 2. Determine the nature of this stationary point, giving a reason for the answer.

y = 3x4 - 8x3 - 3Bringing the power down on each term and subtracting one from the power (as to differentiate, nxm —> nmxm-1), we get for each derivative:dy/...

CW
Answered by Connor W. Maths tutor
6448 Views

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