Moles Flashcards
1
Q
What is a Mole?
A
A measurement of the number of atoms or molecules in a substance
2
Q
What is the formula that connects Mass, Moles and Relative Formula Mass?
A
Mass = Moles x Relative Formula Mass
3
Q
Calculate the number of moles of carbon dioxide molecules in 22 g of CO2.
C = 12
O = 16
A
16 + 16 + 12 = 44
22 / 44 = 0.5mol
4
Q
What is Avogrado’s Number?
A
6.02 x 10^23 Or 602,200,000,000,000,000,000,000
5
Q
What the volume of a mole of a gas at room temperature and pressure?
A
24dm cubed
6
Q
Calculate the number of moles of hydrogen that occupy 6dm cubed at room temperature and pressure
A
6 ÷ 24 = 0.25 mol
7
Q
Calculate the mass of 2 mol of carbon dioxide
C = 12
O = 16
A
2 × 44 = 88 g
