Stoichiometric calculations Flashcards
1
Q
Percentage by mass?
A
The mass of solute made up to 100cm3 solution.
E.g.
1% solution by mass of sodium chloride = 1g sodium chloride in 100cm3 water
2
Q
Percentage by volume?
A
The number of cm3 of solute made up to 100cm3 of solution.
E.g.
1% solution by volume of amylase = 1cm3 amylase made up to 100cm3 of water.
3
Q
Ppm?
A
Parts per million, refers to 1mg per kg or 1mg per litre.
