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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 1.9 mL of reaction cocktail. The absorbance change per minute is 0.05.
a) How many units were in the cuvette if 1 unit =1 mmol/min?b) How many units were in the cuvette if 1 unit =1 nmol/min?c) What is the relative activity of the undiluted enzyme (1 unit = 1 mmol/min)?
A solution is prepared by dissolving 5.32 grams of potassium nitrite (a food preservative, as Clark Griswold would explain) into about100 ml of DI water in a volumetric flask. Enough water is then added to give a total volume of 250.0 ml. What are..
aluminum burns in bromine producing aluminum bromide. in a laboratory 6.0 g of aluminum reacts with excess bromine.
The initial volume of the balloon is 5.00 , and the pressure is 760. The balloon ascends to an altitude of 20, where the pressure is 76.0 and the temperature is 50. What is the new volume, of the balloon in liters, assuming it doesn't break or leak
A Geiger counter is placed 1cm from a radioactive spill and gives a reading of 12,000 cpm. At what distance is the intensity of radiation 40 cpm
Draw three non-equivalent Lewis structures for the nitrous N2O molecule. Show all non-zero formal charges. Which structure(s) is (are) the most important
mercury has a density of 13.6 g per ml. a barometer holding 9.50 ml of mercury has broken. the cost of mercury disposal
Can someone please explain to me how to identify the ion when you are given its last electron with the following quantum numbers?
Calculate: a.the rate constant b.the half-life at 500 C c.how long will it take to decompose 65% of the drug?
In Organic lab we are enabling trans to cis isomerizaton of E-1,2-dibenzoylethylene by irradiating the alkene with UV light. What is the overall equation for this reaction
What will be the molarity of the resulting solutions made by mixing 140 mL of 3.2 M H3PO4 with 590 mL H2O?
Using the Moles of HCL and the mole ratio of the balance equation calculate the moles of NaHCO3 that reacted with the HCL
the differences between the two. In the experiment 1,3-dichlorobutane had a much higher percentage (46.6%) from the total products than 1,2-dichlorobutane did (23.5%).
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