Amount of Substance

Question 1

Amount of Substance

Answer 1

The quantity whose unit is the mole

Question 2

Mole

Answer 2

The amount of substance containing as many particles as there are carbon atoms in 12g of carbon-12

Question 3

Molar Equation 1

Answer 3

Number of moles = N° of particles/Na

Question 4

Number of ions

Answer 4

Number of moles x Avagadro x Number of ions per formula
Write ionic formula

Question 5

Molar equation 2

Answer 5

Moles = Mass/Mr

Question 6

Molar Equation 3 RTP

Answer 6

Moles = Volume (dm3) / 24

Question 7

Molar Equation 4
Ideal gas

Answer 7

moles = PV/RT
Volume = m3
Pressure = Pa
R = 8.31 (gas constant)
Temperature = Kelvin, K
C° —> K
= +273

Question 8

Molar Equation 5

Answer 8

Moles = Concentration x Volume
n = cV
Volume = dm3

Question 9

What is molar mass?

Answer 9

the Ar
the mass of 1 mile of any substance in gmol-1

Question 11

What is the concentration if g dm3

Answer 11

conc in mol dm3 x Mr

Question 12

how to calculate atom economy

Answer 12

Mr of desired product
——————————- x100
Mr of all products

Question 13

how to calculate percentage yield

Answer 13

actual yield
——————— x100
theoretical yield

Question 14

% purity calculation

Answer 14

= actual mass
—————— x100
impure mass