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Question - A 10-ml sample of pure orange juice was diluted with 40 mL of metaphosphoric acid solution. Then 10 mL of the diluted juice was titrated to an end point with 9.27 mL of DCIP. A blank required 0.25 mL of DCIP. A 1-mg sample of pure ascorbic acid required 6.52 mL(after blank correction) of DCIP. What is the concentration of ascorbic acid in the orange juice in mg/100 mL?
The electrode is cleaned before the first and seventh samples. The measured etch rate is given below. Draw a 2σ regression chart for this process.
How do I find the weight percent of each component in the original mixture and would this affect the outcome if Methanol had been used in place of the dichloromethane? Product weight of Oil: 0.11g & Product weight of Polypropylene Glycol : 0.19g.
Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
Amino acids are the building blocks of all the proteins that are found in our body. Some of these proteins are, in turn, utilized to make more amino acids or break down amino acids for other uses. Explain what would happen if we cannot process an ..
A cobalt compound has an observed magnetic moment of 5.2 B.M. What can you deduce about the compound?
A sample system consists of argon confined in a cylinder with a movable piston. Moving the pistion inward uses 24.9J. 15.6J of heat are produced and dissipated to a surrounding water jacket.
Draw the Lewis structure for H2SeO3 from the skeletal template structure below. If the valence shells are filled to the usual limit (maximum of 8), how many non-bonding valence electrons are there in the molecule?
laundry bleach is a solution of hypochlorus acid hclo. to determine the hclo content of bleach an aqueous sulfide salt
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M-1 cm-1. A 10/1 dilution of the enzyme is made and 20 mL of the dilution are put into a cuvette with 80 mL of water and 1...
A technician was accidentally exposed to potassium-42 while doing some brain scans for possible tumors. the error was not discovered until 48h later when the activity of the potassium-42 sample was 2.1?ci .if potassium-42 has a half-life of 12 h
Estimate the final temperature of the gas if 58g of air at 25 degrees Celsius and 50 bar undergoes a Joule-Thomson throttling to a final pressure of 1 bar. Assume the Joule-Thomson coefficient is independent of temperarture and pressure.
a solution of hcl in water conducts an electrical current but a solution of hcl in hexane does not. explain this
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