Chemical Calculations Flashcards
1
Q
What is the formula to calculate moles from mass ?
A
Moles = Mass/Molar Mass (Mr)
2
Q
How many particles are there in one mole of a substance ?
A
6.022 x 10^23 (Avogadro’s number)
3
Q
What is the molar volume of a gas at room temperature and pressure (RTP) ?
A
24dm^3
4
Q
How do you calculate the concentration of a solution ?
A
Concentration = Moles/Volume in dm^3
5
Q
How do you calculate the concentration of a solution ?
A
Concentration = Moles/Volume in dm^3
6
Q
What is empirical formula ?
A
The simplest whole-number ratio of atoms in a compound
