1.2 Amount of Substance

Question 1

What is a mole?

Answer 1

6.02 * 1023 particles. 1 mole of C12= 12g

Question 2

What is the mole equation?

Answer 2

mass= moles * Mr

Question 3

What is the concentration equation?

Answer 3

concentration * volume (cm) moles= ——————-——————— 1000

Question 4

What is the ideal gas equation?

Answer 4

PV=nRT R=8.131 T= K (273c) P=Pa V=m3

Question 5

How do you convert to m3 from cm?

Answer 5

cm3—> *10 -6 —> m3

Question 6

How do you convert from dm to m?

Answer 6

dm3—> *10 -3 —> m3

Question 7

What is the empirical formula?

Answer 7

Simplest whole number ratio of atoms in a molecule

Question 8

What is the molecular formula?

Answer 8

The actual number of atoms in a molecule

Question 9

How do you find the empirical formula?

Answer 9

1) Balance the equation 2)Mass or % divide by Mr 3)Divide by the smallest number 4) Make a whole number ratio

Question 10

What is the theoretical yield?

Answer 10

The amount of product that we should have

Question 11

What is the percentage yield?

Answer 11

Actual amount divided by theoretical

Question 12

What is atom economy?

Answer 12

How many atoms of reactant become the desired product