Top answers

Why would a cell lyse when it's in water?

Lysis, or the bursting of a cell, happens because of a cell swelling excessively causing it to burst, due to the movement of water into the cell by osmosis. However, this isn't the case for all cells! Osmosi...
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Answered by Ashar A. • Biology tutor
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What are the components of an atom and what are their properties?

An atoms is composed of a central NUCLEUS , with ELECTRONS occupying shells, moving around the nucleus. The nucleus is composed of PROTONS and NEUTRONS . The PROTON has a relative mass of 1 and a charge of +...
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Answered by Axel R. • Chemistry tutor
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What is an electron volt?

Electron volts, like joules, are a unit of energy. This may sound confusing- why two? But think of it this way; length has two possible units- metric (metres) and imperial (inches). We can use either units t...
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Answered by Nicholas M. • Physics tutor
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z = 3x + 5y, if x = 7 and z = 41, what is 2y?

z = 3x + 5y 41 = 3(7) +5y 41= 21 + 5y 20 = 5y 4 = y y = 4 2y = 8
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Answered by Hannah A. • Maths tutor
4387 Views

How would you correctly carry out a flame test, and what colour would potassium yield, and what colour would lithium yield?

Answer First a wire loop is cleaned with diluted hydrochloric acid, which is then dipped into the sample metal or solution. This is then held over an open flame and the colour emitted is observed. The colour...
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