3.2 Determination of Formulae Flashcards
1
Q
What is the molecular formula?
A
The number atoms of each element in a molecule
2
Q
What is empirical formula?
A
The simplest whole-number ratio of atoms if each element
3
Q
What is relative molecular mass? (Mr)
A
The mass of a molecule relative to the mass of an atom of carbon-12
4
Q
What is analysis if an element?
A
Investigating the chemical composition of a substance
5
Q
What does anhydrous mean?
A
Without water
6
Q
What does hydrated mean?
A
With water
7
Q
What assumptions are made when calculation the formula of a hydrous salt?
A
Assumption 1- all of the water has been lost
Assumption 2 - There is no further decomposition
