MR Chard Flashcards
define relative molecular mass (Mr)
the average mass of a molecule compared to 1/12 th the mss of an atom of carbon 12
Define Relative atomic mass (Ar)
the average mass of an atom compared to 1/12 th the mass of carbon 12
define the MOLE
one mole of a substance is the amount of that substance which contains as many entities as there are in exactly 12g of carbon 12
Equation for moles, mass and mr
N= m/mr
Ideal gas equation
pV=nRT
pV=nRT
What does p stands for? And what unit is it measured in?
Pressure Pascals (1pa=1N per meter squared )
pV=nRT
What does the v stand for and what unit is it measured in?
Volume
Meters squared
pV=nRT
What does the n stand for and what unit is it measured in?
Mols
Mols
pV=nRT
What dies the R stand for and what unit is it measured in?
Gas constant
8.31 J Km-1 mol-1
pV=nRT
What does the T stand for and what unit is it measured in?
Temperature
Kelvin- 0’= 273K
M(cubed)to dm(cubed)
X1000
Dm(cubed) to m(cubed)
/ 1000
Cm(cubed) to m(cubed)
/ 1,000,000
M(cubed) to cm(cubed)
X1,000,000
Pressure- Kilo Pascals to Pascals
100kpa = 100,000pa (x1000)
