How to Calculate and Solve for the Molar Concentration, Molar Mass and Mass Concentration in Chemistry | The Calculator Encyclopedia

The image above represents the mass concentration.

To compute for mass concentration, two essential parameters are needed and these are molar concentration (c) and molar mass (M).

ρ = c x M

Where;
ρ = mass concentration
c = molar concentration
M = molar mass

Let’s solve an example;
Find the mass concentration when the molar concentration is 24 and molar mass is 15.

This implies that;
c = molar concentration = 24
M = molar mass = 15

ρ = c x M
ρ = 24 x 15
ρ = 360

Therefore, the mass concentration is 360 Kg/dm³.

Calculating the Molar Concentration when the Mass concentration and Molar Mass.

c = ρ / M

Where;
c = molar concentration
ρ = mass concentration
M = molar mass

Let’s solve an example;
Find the molar concentration when the mass concentration is 120 with a molar mass of 40.

This implies that;
ρ = mass concentration = 120
M = molar mass = 40

c = ρ / M
c = 120 / 40
c = 3

Therefore, the molar concentration is 3 mol/L.

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How to Calculate and solve for the Mass, Number of Moles and Molar Mass in Chemistry | The Calculator Encyclopedia

The image above represents the molar mass of a substance.

To compute for the molar mass, two essential parameters are needed and these parameters are mass (m) and number of moles (n).

The formula for calculating the molar mass:

M = mn

Where;
M = Molar mass
m = Mass
n = Number of moles

Let’s solve an example;
Find the molar mass of a substance with a mass of 14 kg and number of moles of 28 mol.

This implies that;
m = Mass = 14
n = Number of moles = 28

M = mn
M = 14 ⁄ 28
M = 0.5

Therefore, the molar mass is 0.5 Kg/mol.

Calculating the Mass of a Substance when the Molar Mass and the Number of Moles is Given.

m = nM

Where;
m = Mass
n = Number of moles
M = Molar Mass

Let’s solve an example;
Find the mass of a substance with a molar mass of 30 Kg/mol and number of moles of 15 mol.

This implies that;
n = Number of moles = 15
M = Molar Mass = 30

m = nM
m = 15 x 30
m =  450

Therefore, the mass of a substance is 450 kg.

Continue reading How to Calculate and solve for the Mass, Number of Moles and Molar Mass in Chemistry | The Calculator Encyclopedia