In a tube containing 1 ml of a 14 dilution of substance A an

In a tube containing 1 ml of a 1:4 dilution of substance A, and 1 ml of a 1:16 dilution of substance B:

What is the final dilution of substance A?

What is the final dilution of substance B?

Solution

In a tube containing 1 ml of a 1:4 dilution of substance A, and 1 ml of a 1:16 dilution of substance B:

What is the final dilution of substance A?

original=1/4

Further =½

Final = ¼ x1/2 = fold dilution

When 1mL substance A is mixed with 1 mL of Substance B two-fold dilution of each substance happens.

(A two-fold dilution reduces the concentration of a solution by a factor of two that is reduces the original concentration by one half).

What is the final dilution of substance B?

original=1/16

Further =½

Final = 1/16 x1/2 = 1/32 fold dilution