Equations

Question 1

What is the atom economy equation

Answer 1

Mr of DESIRED products/ Mr of TOTAL reactants

Question 2

What is the percentage yield equation

Answer 2

( Actual yield/ Theoretical yield )x100

Question 3

Equation for RAM

Answer 3

( isotope mr x percentage ) / total percentage

Question 4

Find mol, mr, mass equation?

Answer 4

Mass(g) = Mr x Mol

Question 5

To find one mole you…

Answer 5

Multiple by 6.022 x 10^23

Question 6

Equation linking atoms, moles and avogadros constant

Answer 6

Atoms = moles x 6.022 x 10^23

Question 7

Equation linking mol, conc and vol

Answer 7

Moles = concentration(mol dm^-3) x volume (dm^-3)

Question 8

Conversions -hint- mm3 < cm3 < dm3 < m3

Answer 8

1000 mm3 = 1 cm3
1000 cm3 = 1 dm3
1000 dm3 = 1 m3

Question 9

Conversions = mg < g < kg < Mg

Answer 9

1 mg x 1000 = 1000mg = 1 g
1 g x 1000 = 1000g = 1 kg
1 kg x 1000 = 1000kg = 1 Mg

Question 10

Electro spray ionisation equation

Answer 10

X (g) + H+ -> XH+ (g)

Question 11

Electron impact ionisation equation

Answer 11

X (g) —> X+ (g) + e-

Question 12

How to find mass for time of flight

Answer 12

RAM = mass x 6.022 x 10^26 ( aka 6.022 x 10^23 x 1000 (to make kg) )

Question 13

Equation linking time, distance and volume

Answer 13

Distance ( m ) = time ( s ) x volume ( m s^-1 )

Question 14

Kinetic energy equation

Answer 14

KE ( J ) = 1/2 x mass (kg) x (volume)^2 (m s^-1)

Question 15

Ideal gas equation

Answer 15

Pressure ( Pa ) x Volume ( m^3 ) = Moles x R ( gas constant = 8.31 ) x Temperature ( K )
1 KPa = 1000Pa
K = C + 273

Question 16

Uncertainty percentage

Answer 16

( Uncertainty / Volume ) x 100