Question

4. If you put 1 mL of coffee into 9 mL of water, how much was the coffee diluted?

Answer 1

1 in 10, or 1/10, or 0.1 dilution factor It may be wrong but this is what I have!

Answer 2

Answer : The coffee diluted was, 1 in 10, or 1/10, or 0.1 dilution factor.

Explanation :

Dilution : It is defined as the solute concentration of a solution decreased by adding the solvent.

The dilution factor for 1 ml of coffee into 9 ml of water is:

$\frac{\text{Amount transferred}}{\text{Total amount}}=\frac{\text{Amount transferred}}{\text{(amount transferred}+\text{amount water added)}}$

Now put all the given values in this expression, we get the dilution factor for coffee.

$\frac{\text{Amount transferred}}{\text{(amount transferred}+\text{amount water added)}}=\frac{1}{(1+9)}=\frac{1}{10}=0.01$

Therefore, the coffee diluted was, 1 in 10, or 1/10, or 0.1 dilution factor.