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How is poly(ethene) formed?

Poly(ethene) is formed when several monomers of ethene (an alkene) are joined together. Ethene can take part in this type of reaction as it is has a double bond (it's unsaturated) which opens up to allow mul...
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Answered by Emily A. • Chemistry tutor
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What is a hormone?

A hormone is a chemical messenger. It is produced by a gland and then travels in the blood to a specific target organ where it causes a response, changing the way the body functions. Hormones can be protein ...
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Answered by Emily A. • Biology tutor
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How can I make my written French sound more fluent/sophisticated?

Imrpoving your written French can make a big difference to your overall understanding of French language and ultimately your grade, but identifying ways to improve can be difficult, particularly if you're lo...
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Answered by Nadia H. • French tutor
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A note was played on an electric keyboard. The frequency of the note was 440Hz. What does a frequency of 440 Hz mean?

A Frequency of 440Hz means that the wave is oscillating 440 times in one second. Ie. 440 waves are produced every second
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Answered by Nick P. • Physics tutor
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Can you form a sentence using the conditional tense?

Example: Si ella trae dados tendríamos que jugar al monopoly. Translation: If she brought dice we'd have to play monopoly. In spanish the conditional tense is conjugated by adding -ía,-ías,-íamos,íais, ían t...
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Answered by Cristina O. • Spanish tutor
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