moles

Question 1

Relative atomic mass (Ar)

Answer 1

the weighted average mass of all naturally occurring isotopes of an element on a scale on where 1 atom of carbon 12 has a mass of 12 amu

Question 2

isotopes

Answer 2

atoms of the same element having same number of protons but different number of neutrons

Question 3

relative isotopic mass

Answer 3

mass of a particular isotope of an element on a scale where 1 atom of carbon-12 has a mass of 12 amu

Question 4

relative molecular mass (Mr)

Answer 4

the mass of one molecule of an elemy or compound on a scale where 1 atom of carbon 12 has a mass of 12 amu

Question 5

Relative formula mass

Answer 5

the mass of one formula unit of a compound on a scale where 1 atom of carbon 12 has a mass of 12 amu

Question 6

mole

Answer 6

amount of subastance containing same number of particles as 12g of carbon 12 or 6.02x10^23

Question 7

molar mass

Answer 7

the mass of 1 mole of a substance in gmol-1

Question 8

solution concentration

Answer 8

the amount of solute (in mol) dissol ved in 1dm^3 of solution

Question 9

n(solids)

Answer 9

m/mr

Question 10

number of particles(N)

Answer 10

mol x 6.02x10^23