You set out to determine the density of lead in the laboratory. Using a top loading balance to determine the mass and the water displacement method (Study Question 41) to determine the volume of a variety of pieces of lead, you calculate the following densities: 11.6 g/cm³, 11.8 g/cm³, 11.5 g/cm³, and 12.0 g/cm³. You consult a reference book and find that the accepted value for the density of lead is 11.3 g/cm³. Calculate your average value, percent error, and standard deviation of your results.

Data given in Question 41

You have a 250.0-mL graduated cylinder containing some water. You drop three marbles with a total mass of 95.2 g into the water. What is the average density of a marble?

 

Transcribed Image Text:

110 90 70 50 30 110 90 50 10 Cengage Learning/Charles D. Winters (a) (b) Determining density. (a) A graduated cylinder with 61 mL of water. (b) Three marbles are added to the cylinder.