Scientific Process

1. Half-fill a 50-mL beaker with water. Warm gently with a small flame but do not boil. What appears on the sides of the beaker? What does this show? In two separate test tubes, put 5 mL each of coconut oil/cooking oil. To one test tube, add 5 mL of water and shake. To the other test tube, add 5 mL of detergent solution and shake. State the Law of Partition:

6. Describe the differences between flocculated and deflocculated suspensions. 7. What is the purpose of a wetting agent in a suspension dosage form?

See picture. Any idea what these would look like?

Is this correct for the diaper dissection lab

20. Which of the following statements is not true about liquid-liquid extractions.   a. Polar solutes have a strong affinity for non-polar solvents.   b. Ionic solutes have a strong affinity for polar solvents.   c. Polar solutes have a strong affinity for polar solvents.   d. Polar solutes have a strong affinity for water.   e. Non-polar solutions have a strong affinity for non-polar solvents.

Arterial embalming may  a. arrest the cause of putrefaction b. increase the possibility of putrefaction c. provide the only treatment needed for skin slip d. increase the area affected by skin slip

1. Put some water in your cup. 2. Sprinkle black pepper all over the surface. What does the pepper do? Write your observation 3. Add a drop of dish soap to the water. What does the pepper do? Write your observation

If you had to test the laundry detergent (Tide, Gain, or whatever you use at home) together with the two different soap molecules and the hard water mix packet. Which do you believe will be more effective at cleaning with hard water, and why, based on your research results?

If ethanol (density = 0.784 g/mL) were used rather than water (density =0.998g/mL) to determine the density of the irregularly shaped marble pieces in question 6, how would the results have been affected? Clearly explain your answer. Assume the marble pieces do not dissolve in ethanol. Also, state clearly by circling the correct phrase before your explanation, if the reported density would be higher, lower or the same as that determined in water. A) Circle the correct choice: The reported density would be higher, lower or the same as the density determined in water.  B) Write your explanation below:

Use the following information to answer numerical-response question 10. Crude oil is separated into different groups of hydrocarbons, or fractions, in a fractional distillation tower. Two different locations at which fractions can be removed from the tower are labelled in the diagram below. Numerical Response Fractional Distillation Tower Crude oil K-11090 the greatest amount of CH4(g) is numbered the largest molecules is numbered molecules with the highest boiling points is numbered 10. Match the numbers of the locations in the diagram above with the descriptions of the fractions that could be removed as given below. The location with the fraction that contains molecules that are least attracted to one another due to weak intermolecular forces is numbered Location 1 190071 Location 2 zonirabi woll (Record in the first column) (Record in the second column) (Record in the third column) (Record your answer in the numerical-response section on the answer sheet.) (Record in the fourth…

15. Look at the medication label. 09-9828-2000 50% Dextrose in water prefilled single-dose Syringe 50% (25 g/50 mL) Warning: Do not use unless solution is clear and seal is intact. Discard unused portion. R Practice Label Co. Practice Label This medicine has 25 grams of dextrose in 50 mL or strength. tsp of sterile water to make it be 50%

Please answer the PHYSICAL DESCRIPTION table and add short captions for the photos. THANK YOU.

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Please don't provide handwriting solution

3. Take another 10mL of the temporary hard water and boil for 5 minutes. Filter, then add 5 mL of soap solution to the filtrate and shake. What is the result? Is the water hard? Why is this type of harness called "temporary hardness"? What other substances cause temporary hardness? Write the equation for removal of temporary hardness by heating. Give 3 other methods of removing temporary hardness in water.

Most of us have had a glass of water from a Brita® pitcher. What is inside of a Brita® filter cartridge and what does it filter out? What doesn’t it filter out?

What is the purpose of formaldehyde in embalming fluid? a. it acts as a surfactant b. it acts as a preservative c. it acts as a vehicle d. it acts as a buffer

Is gel hand sanitizer classified as a solution?

5. Suppose you have a mixture of water and your 2-chloro-2-methylbutane product in a separatory funnel. Use densities to predict which phase will be the top layer in the funnel. a. 2-chloro-2-methylbutane (organic phase) b. water (aqueous phase) c. there would only be one phase since the substances are miscible

In a test tube, dissolve 10 drops of methanol in 3 ml. of water. Oxidize a copper wire spiral by passing it through a Bunsen burner. Plunge the red-hot wire into the alcohol solution several times, cooling the solution under the tap (faucet) so as not to evaporate too much of it. Next, add 1 drop of 0.5% resorcinol solution. Measure 2 ml. of concentrated sulfuric acid (CAUTION!) and pour this carefully down the sides of the test tube containing the mixture. Note the color of the zone intermediate between the acid and the solution.   RESULT:

2. Show solution. Thanks!