calculations

Question 1

what is 1M (g/L/m) in mM?

Answer 1

1000mM (mg/ml/mm)

Question 2

what is 1mM in micro?

Answer 2

1000 micro M

Question 3

1 micro is ?

Answer 3

1000 nm

Question 4

1nm is ?

Answer 4

1000 pm

Question 5

Making a solution of known concentration from powder
(how much solid do i need to make solution?)

Answer 5

mass required = M x V x MWT
M is conc
V is volume in L
MWT is molar mass

Question 6

what is the molar mass? (MWT)

Answer 6

This number is the number of grams needed in 1L of liquid to give a 1M solution

Question 7

Diluting a stock solution to lesser concentration
(what volume of solution 1 do I need to make solution 2?)

Answer 7

C1 x V1= C2 x V2
C1= conc of stock solution
V1= what we want to find here (volume required)
C2= conc of new solution
V2= volume of new solution

Question 8

Molarity of solution

Answer 8

moles of solute/ vol of solution in L

Question 9

w/v (Weight/Volume) Percentage Solutions

Answer 9

w/v%=( massofsolute(g) / volumeofsolution(mL) )×100

Question 10

What does 1% w/v mean?

Answer 10

1 gram of solid in 100 mL of liquid

Question 11

v/v (volume/volume) percentage solutions?

Answer 11

(volume of solute / total volume of solution) × 100 = % v/v

Question 12

What does 1% v/v mean?

Answer 12

1 mL of one liquid in 100 mL total of solution.

Question 13

How to find pKA

Answer 13

pKA= -log10 (Ka)

Question 14

How to find pH

Answer 14

pH= pKa + log10 (base/acid)

Question 15

How to find slope

Answer 15

Slope= molar absorbtivity x length