nano particles and calculating moles Flashcards
1
Q
How big are nano particles?
A
0.0000000001 m
2
Q
Do nano particles have a high volume to surface area ratio or the opposite?
A
A high surface area to volume ratio
3
Q
What will nano particles lead to?
A
development of new devices, new catalysts, coating, and stronger and lighter construction materials. We can also use them in self cleaning glass and in anti bacterial materials.
4
Q
What is a mole?
A
It is a measure of ‘amount’ in a substance.
5
Q
Why do we need moles?
A
Because atoms are so small we need a colossal amount of them to have a measurable amount
6
Q
How many atoms in a mole?
A
6*10^23 or 600000000000000000000000
7
Q
How do you calculate moles?
A
Moles= mass(g) / Mr
8
Q
How many moles in 22g of carbon dioxide?
A
22/44 = 0.5 moles
