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Hey guys, i've got a few questions:


1) What is the relationship between hydrogen bonding and thephysiochemical properties of water?


2) What is the difference between organic and inorganiccompounds?


3) What is the enviromental significance of organic chemicalcontaminants?


4) What is the environmental significance of particulate matter andturbidity?


5) What is the environmental signficance of microbialcontaminants?

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Nelly Stracke
Nelly StrackeLv2
28 Sep 2019
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Related questions

1.In your own words, explain the "surprise" in Planck's work and the social significance of the time (1900s).

2. Explain how fireworks work.

3. Explain the photoelectric effect and the dual nature of light.

4. Explain the evidence supporting that particles such as electrons have wavelengths.

5. Explain the relationship between the size of matter and its exhibition of particulate and the wave properties. Give examples not found on Wikipedia.

6. Why are 100ºF and 10% humidity more comfortable than 100ºF and 95% humidity?

Example 4. The organic functional groups, particularly carboxyl and phenolic, are major contributors to cation exchange properties of soils and sediments. A fraction of soil organic matter was found to have a molar mass of 5000 g mol-1. The organic matter contained 85 carboxyl groups mol-1 (pKa = 4.8) and 16 phenolic groups mol-1 (pKa = 6.0). At a pH of 7.0, what is the CEC of the organic matter per 1 kg of soil? Answer: 2000 cmol(+)/kg OM or 2000 meq/g OM

Step 1. Using pK values find concentration of deprotonated (negatively charged) groups at pH = 7 for carboxylic groups.

Step 2. Using pK values find concentration of deprotonated groups at pH = 7 for phenolic groups

.Step 3. Find the total concentration of deprotonated groups in charge (-)/mol units

Step 4. Knowing molar mass of OM matter find the number of moles of organic groups per kg of organic matter

Step 5. Find CEC of OM

1.Using your graphical data from part A, discuss the relationship between mass and volume. What is the significance of the slope of theline in your graph?

2.Discuss how you used the graph from part B to determine the composition of the unknown. How does increasing the amount of water in the mixture affect the density of the mixture? Why?

3.Suppose you were to determine the density of a solid and gas—how will the procedures and results differ from that of a liquid? Note: a good answer will address procedure differences between all three states of matter and will compare density results for all three states of matter.

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