1.3 Flashcards
What are the stages of mass spectrometer?
-Vaporisation
-Ionisation
-Acceleration
-Deflection
-Detection
How do you calculate Mr?
(abundance of each isotope x mass of each peak)/total abundance of all isotopes
What is a mole?
A mole of any substance contains the same number of particles as atoms of Carbon in 12g of Carbon-12
How do you convert mass concentration ( g dm-3) to molar concentration (mol dm-3)?
divide by Mr
What is the equation for molar volume of gas?
number of moles=volume of gas/volume of one mole of gas
What is the ideal gas equation?
n=PV/RT
What are the units for the ideal gas equation?
n-=moles
P=Pascals
V=m3
R=constant
T=Kelvin
What is the combined gas law?
P1V1/T1=P2V2/T2
How do you calculate the number of particles?
Moles x avogadro constant
How do you find percentage yield?
Actual mass/theoretical mass x100
How do you calculate atom economy?
mass of required product/total mass of product or reactant x100
