Amount of substance Flashcards
1
Q
How can you work out the number of particles
A
Number of moles x Avagadros constant
2
Q
What is the equation linking number of moles, mass and MR
A
Number of moles = mass/mr
3
Q
What is the equation linking number of moles, conc and volume
A
Number of moles= concentration x volume
Has to be in dm cubed
4
Q
How to convert from cm cubed to dm cubed
A
divide by 1000
5
Q
Percentage atom com
A
Desired/ all reactants x 100
6
Q
Why is high atom com good
A
Produces less waste, sustainable and less expensive
7
Q
What is theoretical yield
A
The map sof product that should be formed in a chemical reaction which assumes no chemicals are lost in the process
8
Q
Why is the actual yield less than the theoretical yield
A
Sometimes not all the starting metals react fully and some chemicals are always lost
