What is a mole?
A mole is a measure of quantity, such that when you have a mole of something, you have 6.02 x 1023 atoms/molecules of it. The number of atoms/molecules in a mole is called "Avogadro's Number" and is the number of atoms in 12g of carbon-12. For example, if I had 12 eggs in a box, you could say I have a dozen eggs in the box. Similarly, if I have 6.023 x 1023 molecules of water in a box, you could say I have a mole of water in the box.
AF
Related Chemistry GCSE answers
All answers ▸Ammonia is made from nitrogen and hydrogen in a reversible reaction. Write a balanced symbol equation for this reaction, name the reaction and give one use for ammonia.
Calculate the number of moles in 0.2g of NaCl
What techniques would you use to separate: 1) different colour inks from black ink. 2) ethanol from ethanol and water 3) salt from water
50.0 g of propene reacts with hydrochloric acid to produce 1-chloropropane. Calculate the percentage yield if only 54.0g is made.