What is a mole?
A mole is the amount of a substance which contains as many particles (atoms, ions, molecules etc) of the substance as there are carbon atoms in 12g of 12C - this is exactly 6.02 × 1023 atoms. This formula is known as the Avogrado number. The mass in grams of any element is equal to its relative atomic mass - for example, one mole of Calcium is approximately 40g.
MN
Related Chemistry A Level answers
All answers ▸What is an optical isomer?
State and explain the difference in base strength between phenylamine and ammonia.
Explain why the atomic radii of the elements decrease across Period 3 from sodium to chlorine
Explain why silicon dioxide has a higher melting point than sulphur trioxide