The Mole Concept

Question 1

1 Mole

Answer 1

6.022 X 10^23

Question 2

What is Ar

Answer 2

The relative atomic mass which is the average mass of one atom of an element compared with 1/12 the mass of a carbon 12 atom

Question 3

What is a mass of carbon atom

Answer 3

12 amu ( atomic mass units)

Question 4

Ar=

Answer 4

Average mass of one atom of the element OVER 1/12 X the mass of one atom of carbon 12

Question 5

Relative Molecular Mass Mr

Answer 5

is the average mass of one molecule of a substance when compared with
1/12 the mass of a carbon-12 atom.

Question 6

Relative formula mass

Answer 6

is the same as relative molecular mass but applies to ions only.
The relative formula mass is the total A, of all atoms in formula of an ionic compound

Question 7

What is a mole

Answer 7

The amount of substance that contains the same number of particles as there are atoms in 12 grams of carbon 12

Question 8

How to find the number of moles in a given quantity in grams of a substance

Answer 8

Multiply the given quantity(grams) by the number moles the divide the mass number

Question 9

How to find the number of moles in a given quantity in moles notion of a substance

Answer 9

Multiply the given number of moles (AB x 10^23) by no’s of moles and divide by 6.02 x 10^23

Question 10

Avogardo’s law

Answer 10

Equal volumes of all gases at the same temperature and pressure contain the same number of gas

Question 11

Stp[Standard temperature and pressure]

Answer 11

Volume of i mole of gas is 22.4dm3

Question 12

RTP [room temperature and pressure]

Answer 12

Volume of one mole of gas is 24dm3