C3- Quantitative Chemistry Flashcards
1
Q
What does Mr stand for?
A
Relative formula mass
2
Q
What does Ar stand for
A
Relative atomic mass
3
Q
What will happen to the mass if there is one mole of atoms or molecules of any substance
A
The mass will be equal to the relative formula mass for that substance
4
Q
What is the formula to find the number of moles in a given mass
A
Number of moles = mass in g / Mr
5
Q
What is concentration
A
Is a measure of how crowded things are
6
Q
What is the equation to find out concentration
A
Concentration=mass of solute/volume of solvent
7
Q
What happens when the reactants are used up
A
The reaction will stop
8
Q
What does the amount of product depend on
A
The limiting reactant
9
Q
How do you calculate Ar
A
Mass of isotope 1 X abundance of isotope 1
Mass of isotope 2 X abundance of isotope 2
Then divide sum by 100
