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A 40.2 g piece of solid iron (Fe(s)) heated to 105? is dropped into 100.0 g of water at 54.2?. Given that the specific heat capacities of Fe(S) and water are 0.450 J/g? and 4.184 J/g?, respectively, what is the final temperature of the system?
what is the molarity of a solution of sodium hydroxide that contains 47.0 g of naoh in 205.0 ml of solution? use a
If the Km of carbonic anhydrase for the above reaction is 1.8 mM, what is the catalytic efficiency of this enzyme under these conditions. The units are s-1M-1.
a boy use a metalnbsp that was heat up in hot h2o and then put into a styrofoam cup of h2o at room temperature.
The dialyzing bag is then immersed in distilled water. Which of the following actions should be taken to remove the most salt from the mixture? Leave the bag in the distilled water for an extended period of time, Replace the dialyzing bag periodic..
dissolving 16.45 g potassium chloride in 86.77 g water. What is the concentration in weight percent for this saline solution?
when 10cm3 of a gaseous hydrocarbon cahb was exploded with an excess of oxygen a contraction of 35cm3 occured all
What gas was evolved when you treated the acetone-bisulfite addition compound with hydrochloric acid?
The U.S. national ambient air quality standard for CO in a 1-hr period is 35 ppm. How many times greater than this standard is the CO concentration in cigarette smoke
using a solution contains 10 ammonium by mass and hasnbsp density 0.99 gcm-3. determinenbsp hydroxyl and hydrogen ion
which of the following ethers has the highest boiling
Draw the major and minor products generated in the reaction of 1-Bromo-3methylene-cyclopentane in methyl alcohol and heat.
Metalloids conduct electricity better than nonmetals but not as well as metals
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