Stoichiometry

Question 1

Formulas for concentration

Answer 1

C = no. of moles / volume

Question 2

Please define a homogenous mixture

Answer 2

A homogenous mixture has a uniform composition throughout the mixture and consists of only one phase

Question 3

How to calculate which substance is the reacting limit?

Answer 3

No. of moles of each reactant divided by the co-efficient. The smallest number is the reacting limit

Question 4

Does a mixture retain its individual properties?

Answer 4

Yes

Question 5

Please define a heterogenous mixture

Answer 5

A heterogenous mixture does not have uniform composition and consists of separate phases. Heterogenous mixtures can be separated by mechanical means

Question 6

Please state one formula for concentration

Answer 6

concentration = moles/volume

Question 7

How do compounds and mixtures differ when in comes to ratios?

Answer 7

Atoms combine to form compounds in specific ratios whereas a mixture can have any proportion

Question 8

Please state one formula for no. of particles that includes Avogadro’s constant

Answer 8

no. of particles = no. of moles x Avogadro’s constant

Question 9

Alternative formula for volume

Answer 9

Volume = moles x molar volume