Density
...h, length and height to find the volume. 10. Convert the volume into cm3 11. Divide the mass in grams by the volume in cm3 to get the density. 12. Convert that number into kg by using sig figs and scientific notation. Data and Observations: Description Mass (G) Length (in) Width (in) Height (in) Volume (in3) Volume (cm3) Density (g/cm3) Density (kg/m3) Spruce 35.54 3.5 1.5 0.854 4.48 73.4 0.484 4840 Pressure 18.89 1.375 1.25 0.313 3.938 64.5 0.293 2930 Poplar 27.79 1.5 1.5 1.375 3.094 50.7 0.548 5480 Oak 18.99 1.5 1.438 0.75 1.617 26.5 0.717 7170 Oak 2 51.12 3 3 0.5 4.5 73.7 0.694 6940 Styrofoam 6.42 0.875 1.875 1.875 13.623 223.24 0.029 290 Calculations: Once the lab group found the length, width and height, the group had to convert these measurements into inches from cm. To do this, multiply the in by 2.54 to get to cm. To get the volume multiply length by width by height. Oak 2- 3x3x0.5=4.5in3 4.5x2.54=11.43cm3- this is to find the volume in cm Next divide mass by volume. 51.12/ 73.7=.694 g/cm3 To convert g/cm3 to kg/m3 one must move the decimal place over 4 places to the right because kg is 4 units smaller than g. So the density in kg/m3 for oak 2 is 6940. The same procedure is used for every object. Conclusion: In this experiment one was able to find the densities of spruce, pressure treated, poplar, oak, oak 2 and Styrofoam. By using scientific notation and sig figs the groups is able to find out the density of each object. The results were both accurate and precise because the group did more t...