84 thoughts on “Hon Chemistry 9-3-19 ID of Unknown Lab

  1. Gray Block

    Volume:
    V = l x w x h
    V = 10.17 cm x 5.34 cm x 1.20 cm
    V = 65.169 36 cm3 (3 sig figs)
    V = 65.2 cm3

    Mass:
    m = 95.137 g (5 sig figs)

    Density:
    D = m / V
    D = 95.137 g / 65.2 cm3
    D = 1.459 156 442 g/cm3 (must have 3 sig figs)
    D = 1.46 g/cm3

  2. Milky White Block:

    m= 61.531 g

    V= lxwxh
    V= 10.8 cm x 5.212 cm x 1.2 cm
    V= 67.54 cm3

    D= m/V
    D= 61.531 g / 67.54 cm3
    D= 0.9110 g/cm3

  3. Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

  4. CORRECTION:

    Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

  5. Correction:
    Paper White block:
    V=l x h x w
    l = 4.19 cm
    h = 8.81 cm
    w = 1.81 cm
    V= 4.19 cm x 8.81 cm x 1.81 cm
    V= 66.8 cm3

    mass = 38.420 g

    Density= m/V
    Density= 38.420 g / 66.8 cm3
    Density of the paper white block = 0.575 g/cm3

  6. Black block:

    Volume:
    V= l x w x h
    V= 9.50 cm x 4.52 cm x 2.49 cm
    V= 107 cm3

    Mass:
    110.372 g

    Density:
    D= m/V
    D=110.372 g/ 107 cm3
    D=1.03 g/cm3

    Because my density is 1.03 g/cm3, it is most like the Beta block which has a density of 0.967 g/cm3

  7. Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

    My prediction: since I got a density of 0.998 g/cm3, I predict that the block I have is the Beta block which has a density of 0.967 g/cm3.

  8. CORRECTION

    Milky White Block:

    Mass:
    m= 61.531 g

    Volume:
    V= lxwxh
    V= 10.8 cm x 5.212 cm x 1.2 cm
    V= 67.54 cm3

    Density:
    D= m/V
    D= 61.531 g / 67.54 cm3
    D= 0.9110 g/cm3

    Milky White Block is Delta

  9. CORRECTION:
    I have a paper white block.

    V=lwh
    l=14.23 cm
    w= 3.39 cm
    h= 1.31 cm
    V= 14.23 cm x 3.39 cm x 1.31 cm
    V= 63.2 cm3

    mass: 31.715 g

    D= m/V
    D= 31.715 g/ 63.2 cm3
    D= 0.502 g/cm3

    THEREFORE:
    I think the paper white block is “Alpha” because the density of my block is the closest to the density of Alpha which is 0.541 g/cm3.

  10. CORRECTION:
    Gray Block:

    Volume:
    V= l x w x h
    V= 7.32 cm x 3.31 cm x 2.50 cm
    V= 60.57 cm3

    Mass: 85. 673 g

    Density:
    D= m / V
    D= 85.673 g / 60.57 cm3
    D= 1.41 g/cm3

    Since the density of my gray block is 1.41 g/cm3, I believe that my block is the Epsilon block because it has a density of 1.42 g/cm3.

  11. Gray Block

    Volume:
    V = l x w x h
    V = 10.17 cm x 5.34 cm x 1.20 cm
    V = 65.169 36 cm3 (3 sig figs)
    V = 65.2 cm3

    Mass:
    m = 95.137 g (5 sig figs)

    Density:
    D = m / V
    D = 95.137 g / 65.2 cm3
    D = 1.459 156 442 g/cm3 (must have 3 sig figs)
    D = 1.46 g/cm3

    ID of block: Epsilon

  12. So, right now we have an ID for at least one of the blocks in each color.

    I think the final answers are:

    Alpha- paper white
    Beta- black
    Delta- milky white
    Gamma- clear
    Epsilon- gray

    If you have any contradictions please let me know!!!

  13. Correction:

    Volume:
    V= l x w x h
    V= 3.10 cm x 2.35 cm x 8.10 cm
    V= 59.0 cm3

    Mass
    m=70.50 g

    Density:
    D=m/V
    D= 70.50 g/ 59.0 cm3
    D= 1.19 g/cm3

    Since the density of my block is 1.29 g/cm3, I believe that my block is the Gamma block because the gamma block has a density of 1.17 g/cm3 which is closest to my block.

    • correction to my correction:
      I had the clear block!!!!

      Volume:
      V= l x w x h
      V= 3.10 cm x 2.35 cm x 8.10 cm
      V= 59.0 cm3

      Mass:
      m=70.50 g

      Density:
      D= m/V
      D= 70.50g/ 59.0 cm3
      D= 1.19 g/cm3

      Since the density of my block is 1.19 g/cm3, I believe that my block is the Gamma block because the Gamma block has a density of 1.17 g/cm3 which is the closest to my block’s density value.

  14. clear block:
    V= l x w x h
    V=10.5 cm x 3.90 cm x 1.20 cm
    V=49.1 cm3

    m = 59.382 g

    D= m/V
    D= 59.382 g/49.14 cm3
    D=1.17 g/cm3
    my block is the gamma one

  15. I give myself 4 stars this week. I kept up and even got ahead in the technology assignment we did. I printed out worksheets and handouts ahead of time, too. I did not give myself five stars because I got a little confused and overwhelmed today. I couldn’t remember how to do certain parts of the technology assignment and fell a little behind in class.

  16. This week, I would rate myself a 3/5 stars because I worked hard and did all of my work. Even though I understood and followed the assignments everyday, I struggled some with following the steps and I got confused and a little behind. I also did not do too great on the test, but I am ready to pick back up Monday and work harder!

  17. This week I would rate myself a 3 out of 5 stars. I got all of my assignments done in class, and I kept up with all of my homework pretty well. I did not do as well on my test as I would have liked to. I will definently be studying harder for the next test so I can improve.

  18. This week I would rate myself a 4 out of 5 on the entire week. I would give myself this rating because I did very good with time management, getting my school work done, and studying for tests and quizzes. However, there are probably some things that I could have done better, like paying more attention during Chapel.

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