The Mole Flashcards
1
Q
What can amount of substance be measured as?
A
Mole
2
Q
How many particles does 1 mole contain?
A
6.02x10*23
Avogadro’s number
3
Q
Equation for number of particles
A
No.particles = no.moles x Avogadro’s constant
4
Q
2 equations for no.moles
A
No.moles = mass/Mr
No.moles = concentration x volume/1000
5
Q
What are the units for concentration and volume?
A
Concentration - moldm-3
Volume - dm3
6
Q
T-shaped bond angle
A
88
7
Q
What is electro-spray ionisation?
A
1) Dissolve sample in volatile solvent
2) Inject through hypodermic needle - fine mist
3) Attach tip of needle to high voltage supply
4) Particles are ionized by gaining a proton (from solvent)
