Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
Comparing the masses of atoms and
molecules
Since the masses of atoms are so small, it is much more convenient to compare their
masses:
We use the scale of Relative Atomic Mass (Ar)

Relative Atomic Mass (Ar)
The relative atomic mass (Ar) of an element is the average mass of…

Page 3

Preview of page 3
3. Calculate the relative molecular masses of:
a) Water H2O b) Propane C3H8
c) Sucrose C6H12O6 d) Oxygen O2
e) Potassium Sulphate K2SO4
f) Aluminium bromide AlBr3
Answers: 1. 8 2. 17 3a. 18 3b. 44 3c. 180
3d. 32 3e. 174 3f. 267

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »