RAM, RMM, moles and avogrados constant

Question 1

What is the RAM? (relative atomic mass)

Answer 1

The relative atomic mass is the average mass of an ELEMENT compared to 1/12th the mass of a single carbon 12 atom.

Question 2

True or false; does every element have multiple isotopes?

Answer 2

False, ALMOST all of them do.

Question 3

What is the equation for relative atomic mass?

Answer 3

RAM= average mass of one atom of an element/ mass of one atom of ¹²C

Question 4

What is RMM? (relative molecular mass)

Answer 4

The relative molecular mass is the average mass of a MOLECULE compared to 1/12th the mass of a single carbon 12 atom.

Question 5

What is the equation for relative molecular mass?

Answer 5

RMM= average mass of one molecule x 12/ mass of one atom of ¹²C

Question 6

What is the RFM? (relative formula mass)

Answer 6

It is used for ionic compounds as they dont exist in molecules.

Question 7

What is the symbol for relative atomic mass?

Answer 7

Aᵣ

Question 8

What is the symbol for relative molecular mass?

Answer 8

Mᵣ

Question 9

What is the symbol for relative formula mass?

Answer 9

Mᵣ

Question 10

What is Avogrados constant written as?

Answer 10

6.022x10²³

Question 11

Define Avogrados constant.

Answer 11

It is the number of atoms in 12g of carbon 12

Question 12

Define mole.

Answer 12

It is the amount of substance that contains 6.022x10²³

Question 13

What equation links moles, mass and Mᵣ

Answer 13

number of moles= mass/ Mᵣ

Question 14

What are the units for Moles, Mass and Mr/Ar?

Answer 14

Mass= g
Mr/Ar= g mol-1
Moles= mol

Question 15

What equation links mass of 1 mol, mass of 1 atom and avogrados constant?

Answer 15

Mass of 1 mol= mass of 1 atom or molecule x avogrados constant