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Understanding of food analysis methods.  Principles of method described compared to other techniques.   1 The MOHR Titration, AOAC Method? What is it and how does it work? How can it be used to quantify salt in a sample. 2 Are there any advantages and/or disadvantages of this method?3 Are there any alternate methods better than the Mohr Titration toquantitatively determine salt in a sample? 4. Diseases with recent statistics? Refer to World Health Organisation? 5. Why analayse salt? 6. Consumption? 7.  Main aims of study?

researchers working in a chemistry lab were examined anatomical structures of the brain using concentrated formaldehyde solutions. Once their studies concluded there remained 1.5 gallons of the substance and the researcher decided to pour this down the drain. In this case, they directly violet regulations put in place by which office?1. Office of research integrity 2. Institutional animal care and use committee3. Occupational safety and health administration 4. Institutional review board

For manufacturing 1 litter of Acid free shampoo for bike or car washing, which textile dye i should use for coloring my shampoo?  Please mention what percentage or amount of dyes i should use for 1 litter of shampoo?  Please answer at your own words.

If A=absorbance, B=molar absorptivity, C=length of light path, D=concentration, and you plot a graph of absorbance (y-axis) vs concentration (x-axis), what does the slope of the Beer's Law (A=BCD) curve signify? Choose one:  a. absorbance b. molar absorptivity c. length of light path d. concentration

The protein content of the unknown samples were determined using BSA as standard. The absorbance values of the standard solutions and samples are as follows. BSA concentration (mg/mL) Absorbance 0.000 20 0.110 40 0.192 60 0.248 80 0.325 100 0.400 120 0.460 a. What is the equation of the line? b. Determine the protein concentration of samples in ug/mL. Sample dilutions 1 in 14 A540 0.150 1 in 5 1 in 8 0.380 0.235

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Table 1. Emulsion Formation Emulsion has formed (Yes or No) NO es 1. From the results in Table 1, can you say that the soap is an emulsifying agent, a substance able to cause nonpolar and polar substances to mix? How did you reach your conclusion? Fron Sample Water Water plus oil Water plus oil plus soap Hydrophilic head LAB WORKSHEET- Experiment 11 Ester Hydrolysis and Soap Making Na 0. No. of Layers Cloudy or Clear Clear Clear cloudy 2 2 water is t 2. The products of the saponification reaction you performed were fatty acid sodium salts and glycerol. Shown below is a long chain fatty acid sodium salt. The molecule is amphiphilic because it has a polar end (hydrophilic head) and a nonpolar portion (hydrophobic tail). HO Hydrophobic tail is able a) What part of the molecule interacts with water? Polar bond interacts w/water CH3 b) Which part of the molecule interacts with a nonpolar substance like grease? nonpolar interacts w/ grease 32

Please answer the rest. This is using up another one of my questions

A1L TPN order is written for 400 mL 10% Dextrose, 300 mL 4.25% amino acids, and a total of 37 mL of additives. How much sterile water for injection should be added? a. 55 mL b. 137 mL c. 163 mL d. 263 mL

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2. A MgCl2 stock solution that is 25 mM is provided by a PCR kit. We will prepare a 10 ul PCR reaction that needs to have a final concentration of 5 mM. How much of the stock magnesium chloride do we need to add to our PCR reaction?

Use the following data to answer questions 1-5 below. Metal Rxn with Rxn with Rxn with room Rxn with warm acid water steam temp acid Didn't observe Fizzes slightly Vigorous gas production Small bubbles Didn't observe NR Steady stream of bubbles Didn't observe C Didn't observe NR NR A few bubbles Didn't observe Didn't observe Vigorous Vigorous bubbles and the sample dissolves bubbles Question 1 Which of the following is the least active metal? O A OD O B MacBook Pro

High performance liquid chromatography (HPLC) can be used to : a. identify the various pigments from a leaf extract. b. separate types of organic pesticides. c. determine the mercury content of a fish sample d. all of the above are correct

09. Two samples of the same soil is subjected to pH analysis using a pH meter, the first is analysed using 1:1 soil:water ratio and the other with 1:1 soil:KCl ratio, what would be the most probable result?        A. Soil analused using 1:1 soil:KCl ratio will register a higher pH compared to that of soil analysed using 1:1 soil water ratio       B. Soil analysed using 1:1 soil:KCl will register a lower pH compared to that of soil analysed using 1:1 soil:water ratio       C. Soil analysed using 1:1 soil:water ratio will register a lower pH compared to that of soil analysed using 1:1 soil:KCl ratio       D. Soil analysed using 1:1 soil:water ratio will have the same pH with that of soil analysed using 1:1 soil:KCl ratio

I need help with this please help me asap!