The relative molecular mass (Mr) of an element is the average mass of one molecule of the element/compound when compared with of the mass of an atom of carbon-12, which taken as 12 units.
Example
Find the relative molecular mass of carbon dioxide.
[ JAR: C = 12; O = 16 ]
Answer:
The formula of carbon dioxide = CO2
Relative molecular mass of CO2 = 1 x 12 + 2 x 16 = 44
No comments:
Post a Comment