Top answers

Explain why an atom has no overall charge.

An atom is comprised of protons, neutrons, and electrons. Protons have positive charge and the number of protons is dictated by the proton number, which is the same as the number of electrons, which have neg...
JC
Answered by James C. • Chemistry tutor
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What does reversible mean?

Reversible is a term used for certain reactions that never reach a final stage. So imagine we have A and B reacting together to form C, and we say that this reaction is reversible. So at a point in time, in ...
AT
Answered by Antonis T. • Chemistry tutor
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5.95g of potassium bromide was dissolved in 400cm3 of water. 1) calculate its molarity, 2)its concentration in g/dm3.

0.125 M 2) 14.875 g/dm3
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Answered by Natalie F. • Chemistry tutor
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What is the difference between an alkene and an alkane ?

An Alkene is an unsaturated hydrocarbon, whilst an Alkane is a saturated hydrocarbon. A hydrocarbon is a compound made up of only carbon and hydrogen. A compound is unsaturated if there is one or more double...
IC
Answered by Imogen C. • Chemistry tutor
3484 Views

What is a mole?

A mole is like a dozen - it is a number of something . You can have a dozen people (12 people), a dozen oranges and so on. A dozen is useful for big objects like oranges, but atoms and molecules are much muc...
MH
Answered by Martin H. • Chemistry tutor
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