psd3 016 ⁂ ⁂ Name:

slope m= (y2−y1) (x2−x1)
Volume V = length l × width w × height h
mass m = density ρ × Volume V
ρ= m V

  1. The first graph shows data gathered by a student in SC 130 physical science. Soap density background rectangle major grid lines axes x-axis and y-axis linear regression line data points as circles text layers Soap density volume (cm³) mass (g) y-axis labels 0 4 8 12 16 20 24 28 32 36 40 x-axis labels 0 5 10 15 20 25 30 35 40 45 50
    1. __________ _____ Calculate the density ρ of the soap (include units!).
    2. ______________ Will the soap float or sink?
    3. ______________ Toughie: Based on the density, what brand of soap is the above bar?
  2. __________ _____ A student measures a bar of soap with a length of 8.0 cm, a width of 5.4 cm, and a height of 2.6 cm. What is the volume of the soap?
  3. __________ _____ A student measures a bar of soap with a length of 8.0 cm, a width of 5.4 cm, and a height of 2.6 cm. The soap has a mass of 88.0 grams. What is the density of the soap?
  4. ___________ _____ A bar of soap is found to have a density of 1.3 g/cm³. If the volume of the soap is 50 cm³, what is the mass of the soap?
  5. ___________ _____ A lead cube is found to have a density of 11.4 g/cm³. If the mass of the cube is 365 grams, what is the volume of the cube??
  6. Spring 2013 I was puzzled by a blue Lux Wake Me Up soap. I gathered the following data and made the chart shown based on the data. LibreOffice screen shot of soap density data.
    Lux Wake Me Up soap
    The slope was 0.9853 g/cm³. When placed in water the soap sank. What is wrong with this? Explain.