GCSE Transition Flashcards
1
Q
What is Avagdro’s constant?
A
6.02 X 10^23
2
Q
How many atoms are there in one mole of an element?
A
1
3
Q
If I had one mole of hydrogen molecules (H2), how many molecules would I have?
A
6.02 X 10^23
4
Q
If I had one mole of hydrogen molecules (H2), how many atoms would I have?
A
1.024 X 10^24
5
Q
Define Ar
A
Relative Atomic mass
6
Q
Define Mr
A
Relative formula mass
7
Q
Which 2 formulas are used to calculate moles?
A
moles = concentration X volume, moles = mass/formula mass
8
Q
How many moles are in 10g of Fe?
A
0.18 moles
9
Q
How do you convert cm^3 to dm^3?
A
divide by 1000
