Stoichiometry

Question 1

What are homogenous and heterogenous mixtures and examples

Answer 1

Homogenous: a mixture that has uniform composition an properties throughout

Ex: Bronze alloy

Heterogenous: a mixture that has non uniform composition, therefore not the same properties throughout.

EX: Concrete

Question 2

What is the change from gas to solid called

Answer 2

Deposition

Question 3

How do you calculate number of particles/atoms/molecules

Answer 3

Moles * Avogadro’s constant

Question 4

How do you determine limiting and excess reactants

Answer 4

By finding the moles of each reactant, then looking at the ratios in the balanced equation

we divide moles/ratio and the one with lowest value is limiting

Question 5

What is the formula for percentage yield?

Answer 5

(Actual yield / Theoretical yield) * 100

Question 6

What is the moles for gases formula?

Answer 6

moles = volume/22.7

Question 7

Formula to calculate change in gas conditions?

Answer 7

P1V1/T1 = P2V2/T2

Question 8

TITRATIONS

Answer 8

TITRATIONS