What is a mole?
A mole is a name given to a certain number of particles. Amounts of various substances are measured in a unit known as the mole (known as mol for short, symbol n).
One mole is approximate 6.02 x 1023 particles (this number is known as the Avogadro constant, NA)
Number of moles = Number of particles you have ÷ Number of particles in a mole
For example: I have 1.5 x 1024 C atoms - how many moles of carbon do I have?
Number of moles = (1.5 x 1024) ÷ (6.02 x 1023)
= 2.49 moles
MB
Related Chemistry GCSE answers
All answers ▸What are the differences between covalent bond and an ionic bond? And can you give an example of each?
What mass of CO2 will be produced when 50 g of CaCO3 decomposes?
Describe and explain how changes in the earth atmosphere, from the Precambrian Era (where the earth as occupied by volcanoes), have changed to form the surface of the Earth today and its atmosphere.
What is the relative formula mass of CaCO3?