Quantitative chemistry Flashcards
(6 cards)
1
Q
How do you calculate the formula mass ?
A
First find the relative atomic mass of each element in the formula. Then multiply the mass by the number of atoms in that element. then add all of the numbers together.
2
Q
How to do the reacting Masses, gasses and solutions thing.
A
- Calculate moles A using the appropriate triangle
- Calculate moles B using the chemical equation ( Ratio thing )
- Calculate mass, volume or concentration using the appropriate triangle.
3
Q
What is the triangle for reacting masses ?
A
Mass over Mol and Mr
4
Q
What is the triangle for gas volumes ?
A
Volume over Mol and Vm ( in cm cubed or dm cubed )
5
Q
What is the triangle for titrations ?
A
Moles over Concentration and Volume
6
Q
What is the conversion from cm cubed to dm cubed ?
A
From cm cubed to dm cubed you divide by 1000.
