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How could you increase the rate of a chemical reaction?

The collision theory states that when two or more particles have sufficient energy and orientation, the collision will be successful in producing a reaction. There are many ways to increase the rate of a che...
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Answered by Julia Z. • Chemistry tutor
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Integrate a^x with respect to x

This comes up in C4 in A level maths and differentiating it could come up in C3. You can write a^x as exp(ln(a^x))=exp(xln(a)) then differentiating this, you get ln(a) exp(xln(a))=ln(a)a^x. By differentiatin...
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Answered by John W. • Maths tutor
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Give an example of a negative feedback mechanism in the human body.

When the hypothalamus in the brain detects that the blood is getting too concentrated (not enough water), it stimulates the pituitary gland to release an anti-diuretic hormone (ADH). When it reaches the kidn...
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Answered by Paul M. • Biology tutor
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How do current and voltage vary in series and parallel circuits, respectively?

In a series circuit, the current is the same throughout; the voltage is split among the components (such as LEDs or resistors) in proportion to the resistance of the components (higher resistance means more ...
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Answered by Paul M. • Physics tutor
14877 Views

What is the function of a catalyst in a chemical reaction?

It provides an alternative reaction pathway with a lower activation energy. However, it does not lower the activation energy for the 'normal' reaction without a catalyst.
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Answered by Paul M. • Chemistry tutor
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