mole concept

Question 1

a mole

Answer 1

one mole of a substance is the amount of that substance that contains 6X10 23 particles of that substance

Question 2

relative molecular mass

Answer 2

average mass of one molecule of that compound compared with one twelfth of the mass of one atom of the carbon 12 isotope

Question 3

relative atomic mass

Answer 3

average of the mass numbers of the isotopes of the element as they occur naturally taking their abundance into account expressed on a scale in which the atoms of the carbon 12 isotope have a mass of exactly 12 units

Question 4

the avagadro constant

Answer 4

number of carbon atoms in exactly 12 grams of the carbon 12 isotope