Hello!
1) How much was used in the lab?
To calculate how much glue was used in the Lab, we need to apply the following dilution equation to know how much of the 100% glue is needed to prepare 900 mL of 55% glue solution. The equation is shown below:
[tex]C1*V1=C2*V2 \\ \\ V1= \frac{C2*V2}{V1}= \frac{55 \%*900 mL}{100 \%}= 495 mL[/tex]
So, 495 mL of Glue is required to prepare 900 mL of 55% Glue Solution.
2) How much water was added to it?
To determine how much water was added, the easiest way is to subtract the amount of Glue in the 900 mL-solution to the total volume, and the resulting volume would be the volume of water in the solution. The equation is shown below:
[tex]V_{H_2O}= V_{total}-V_{glue}=900 mL - 495 mL= 405 mL H_2O[/tex]
So, the volume of added water to prepare the 900 mL of 55% solution is 405 mL.
Have a nice day!
