Given what you have learned in this unit, explain why you must use both soap and

Question

Given what you have learned in this unit, explain why you must use both soap and water wash oil from your hands. Lake Michigan is a very large, very deep body of water, located in a region of the United States that gets quite cold in winter. On the coldest day of last year, what was the temperature at the bottom of Lake Michigan? Explain your answer in terms of the density of water. Plants use capillary action in their roots - which are essentially narrow tubes - to get water from the soil. Based on this information, explain how water moves up the roots of a flower in terms of cohesive and adhesive forces.

Explanation / Answer

36. We need to use both, water and soap to wash oil from our hands because the non polar part of the soap is in charge to remove or been attract with oil (equal dissolves equal), meanwhile the water interact with the polar part of the soap dragging out all the emulsion. It is called tiron’s effect

37. Water is heaviest at 4 degrees Celsius (39 F) and that is the temperature at all ocean and deep lake bottoms.

Water at that temperature simply sinks and stay there.

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