Calculate The Mass Of Sucrose Needed To Make Solutions 2681736

Point values are listed in brackets next to the questions [#].
1. Calculate the mass of sucrose needed to make the following solutions with at the noted sucrose
concentration (% W/V) and total solution volume. Show your work.
a. Solution A: 54 mL at 17% (W/V) [2]
b. Solution B: 178 mL at 3% (W/V) [2]
c. Solution C: 22 mL at 12% (W/V) [2]
d. Solution D: 91 mL at 25% (W/V) [2]
e. Solution E: 205 mL at 8 % (W/V) [2]
2. If all of the solutions in Question #1 were not capable of mixing together (like oil and water), and
were added to a test tube, what would be the final order of the layers formed? List the
solutions beginning from top to the bottom of the tube. [5]
3. In reality, the solutions in question #1 would mix together if they were all roughly poured into a
test tube.
a. If you wanted the solutions to form layers in the tube, describe the technique you would
follow to add them to the tube. [3]
b. In what order would you add the solutions, using the technique listed above in question
3.a., so that distinct layers would be visible? [5]
4. You add 50 g of sucrose added to 100 mL solution.
a. Why is this not a 50% (W/V) concentration solution? [3]
b. Is the sucrose concentration of this solution more or less than 50% (W/V)? [2]
5. Which is the more correct term to use: Gaia “Theory” or Gaia “Hypothesis” and why? [3]
6. Briefly explain the Gaia concept as it relates to the planet. [5]
7. The following two pages are maps of seismic activity and volcanic activity across the globe. Use
them to answer the questions below.
a. What is significant about the relative locations of earthquakes and volcanos (i.e.
compare the locations of earthquakes and volcanos to each other)? [5]
b. What explains the relative locations of earthquakes and volcanos? [5]
c. Why are there large areas of the planet with no earthquakes nor volcanos? [3]

8. Mark the location of the subsea trench on the earth surface cross section below [3]

9. In the cross section shown in question 8, why is the trench located in this area? [3]
10. In the earth surface cross section shown below, four points are marked at different locations.
Rank the age of the crust, from lowest age to highest age, at these locations. [4]
11. Explain the ranking of the crust age for each point in question 10. Why is the crust youngest,
oldest, and in between for the locations in your ranking? [8]
A
B
C
A
D
12. Use the Seafloor Age figure on the following page to answer the questions below. The figure
includes dimension lines and labels with text indicating the distance between the arrow points.
For example, the distance between the two arrow points in the figure below is 5,000,000
meters.
a. For Location A
i. What is the sea floor age at each of the arrow points. [2]
ii. Calculate the rate at which the sea floor is spreading in this location in mm/yr.
Show your work. [5]
b. For Location B
i. What is the sea floor age at each of the arrow points. [2]
ii. Calculate the rate at which the sea floor is spreading in this location in mm/yr.
Show your work. [5]
c. For Location C
i. What is the sea floor age at each of the arrow points. [2]
ii. Calculate the rate at which the sea floor is spreading in this location in mm/yr.
Show your work. [5]
13. The Figure below shows earthquake depth at the convergent boundary on the west coast of
South America. Red and Orange signify shallow depth earthquakes, Green signifies medium
depth earthquakes, and blue signifies deep earthquakes. Why does earthquake depth generally
increase from west to east? [5]
14. Why is granite rock speckled and granite gneiss rock banded? [4]
15. Define “Hardness” as it pertains to rocks [2]
16. A mineral is said to have what property if it breaks along a smooth, even surface? [2]
17. What is the term for the property of a mineral to resist bending or breaking? [2]
18. What is the difference between the color of a mineral and a mineral’s streak color? [2]
19. Explain the difference between clastic and non-clastic rocks. [3]
20. A soil column the same as that used in Lab 5 (Porosity of Soils Lab), Activity 1, is set up and usedto obtain the following data for a soil sample:

  • Mass of soil in column: 107 g
  • Volume of soil in column: 84 mL
  • Initial volume of syringe: 100 mL
  • Final volume of syringe after saturating soil column: 72 mL
  • Volume of water that drains free after removing syringe: 10 mL
  • Volume of water that can be sucked out with syringe after free-draining water is
  • removed: 8 mL

a. Calculate the porosity of the soil. [3]
b. Calculate the % gravitational water based on the amount of water needed to
saturate the soil column. [3]
c. Calculate the % useable water based on the amount of water needed to
saturate the soil column. [3]
d. Calculate the non-useable water based on the amount of water needed to
saturate the soil column. [2]
21. Classify the soil texture of the following soils given two of three particle types. Determine the
percentage of the third particle type. Use the textural triangle on the next page. Your answer
for each should include two parts: texture of soil and percentage of the third particle type.

  • 20% silt and 30% clay [3]
  • 10% sand and 20% clay [3]
  • 35% silt and 30% sand [3]
  • 40% clay and 55% sand [3]

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