equations

Question 1

relative atomic mass

Answer 1

(1st isotope x abundance) + (2nd isotope x abundance) / 100

Question 2

mass of element in compound

Answer 2

(mass of element in compound / mass in compound) x 100

Question 3

moles in a solid

Answer 3

mass
—————————
mr (molecular mass)

Question 4

atom economy=

Answer 4

mass useful product
—————————— x100
mass of all products

Question 5

% yield =

Answer 5

actual
————— x100
theoretical

Question 6

1st stage of theoretical yield

Answer 6

1) no of moles :

mass
———
mr

Question 7

second stage of theoretical yield

Answer 7

ratio:

CaCo3 | 2CaO
1 | 2
0.1 mole | 0.2 moles

Question 8

what is stage 3 of theoretical yield

Answer 8

answer question

mass = moles x mr

Question 9

how to find limiting factor

Answer 9

mass
———
mr

least is limiting factor

Question 10

concentration

Answer 10

moles
————————
volume of solution

Question 11

cm^3 > dm^3

Answer 11

x1000

Question 12

moles in a liquid

Answer 12

concentration x volume
———————————
1000

Question 13

moles in a gas

Answer 13

volume
———
24