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Define a hydrocarbon and explain the difference between alkenes and alkanes.

A Hydrocarbon is an organic molecule containing only hydrogen and carbon atoms. Alkanes are saturated hydrocarbons, meaning they are only made up of single bonds. The carbons are 'saturated' with hydrogen at...
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Answered by Saskia H. • Chemistry tutor
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Explain what is meant by a saturated hydrocarbon

A saturated hydrocarbon is a molecule made up of hydrogen and carbon only and only contains single carbon to carbon bonds.
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Answered by Niamh D. • Chemistry tutor
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What is a parasite?

An organism which feeds off the resources of its host, this has a negative impact on the host and a positive impact on the parasitic organism
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Answered by Niamh D. • Biology tutor
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Describe differences between animal and plant cells

There are many differences between animal and plant cells, these include:1) Plant cells have a cell wall, animal cells do not2) Only plant cells have chloroplasts- these contain chlorophyll that helps in lig...
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Answered by Polly M. • Biology tutor
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In a recent election, 42% of the voters were male. There were 400 more female voters than male voters. Assuming all voters are either male or female, how many voters were there overall?

Since 42% of voters are male, 58% must be female. Since 58-42 = 16, the difference of 400 represents 16% of the voters. We can then divide 400 by 16 to get 25, which represents 1% of the voters. 25 x 100 = 2...
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Answered by Peter O. • Maths tutor
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