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Page 10 of 10 2. A student finds two pieces of bone. One is about 2 cm long and

ID: 577877 • Letter: P

Question

Page 10 of 10 2. A student finds two pieces of bone. One is about 2 cm long and the other about 3 cm long BA55.3 Density weighs the 2 cm piece and finds that it weighs 29.35 g. The student then places some water in a 1 mL. graduated cylinder. The volume of the water reads 53.4 mL. The student thern of bone carefully into the water until it is completely submerged, and then reads the volume indicated by the meniscus of the water. It reads 68.5 mL. The student then emplies cylinder, and adds some fresh water. Now the meniscus stands at the 57.6 mL. mark. Ie weighs the 3 cm piece of bone and finds that it weighs 41.33 . The student bone into the water and reads the the blanks below. Show your calculations slides the piece the graduated Now it stands at the 78.3 mL mark. Fill in meniscus of the water. slides this piece DATA Sample 1 Length of sample Mass of sample Volume of water in graduated cylinder Sample 2 Volume of water plus sample RESULTS Volume of sample Density of sample Average of the densities 36

Explanation / Answer

Average density=(1.9437+1.997)/2 g/mL =1.97035 g/mL

parameter sample 1 sample 2 length of sample 2 cm 3 cm mass of sample 29.35 g 41.33 g volume of water 53.4 mL 57.6 mL volume of water + sample 68.5 mL 78.3 mL volume of sample (68.5-53.4) mL=15.1 mL (78.3-57.6) mL=20.7 mL density of sample (29.35g/15.1mL)=1.9437 g/mL (41.33g/20.7mL)=1.997 g/mL