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What is the unit frequency is measured in?

Hertz (Hz), or sometimes megahertz if the Hz is very large.
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Answered by Bradley P. • Physics tutor
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State what is meant by the term structural isomer?

Same molecular formulas, but bonded in different ways. So by this I mean that 2 molecules could have the same formula but have a different structure, they have bonded together differently.
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Answered by Bradley P. • Chemistry tutor
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Explain why chloride and bromide are in the same group in the period table. Also describe the electronic structures of both.

They have the same number of 'free electrons' in their outer ring. They both have 7 free outer electrons, this means that all group 7 elements have 7 free outer electrons.
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Answered by Bradley P. • Chemistry tutor
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Explain why maltose can only be broken down by the enzyme maltase.

The active site of an enzyme is complementary (meaning, it fits perfectly) to a substrate (in this can the substrate being maltose). Once the maltose and maltase combine to form the enzyme-substrate complex,...
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Answered by Bradley P. • Biology tutor
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Describe the function of receptors in the skin?

The first thing that they do is detect a stimulus, this could be a change in temperature or sensation, then once they have done this they convert this into an impulse, which is eventually sent back to the br...
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Answered by Bradley P. • Biology tutor
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