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Hydrolysis of an ester using sodium hydroxide (2M) is usually a fast reaction. Why would it take almost 40 minutes to complete? It is imperative to consider the location of each reagent within the vial. Remember, a reaction cannot occur unless the reagents can bump into each other
What weight of A would be removed from the same solution by successive extraction with four portions of 25mL of hexanes? How much hexanes would be required to remove 98.5% of A in single extraction?
how much heat does your body lose when 2.95g of sweat evaporates from your skin at 25 degrees Cecilius
Explain why the C=C stretching mode gives rise to a rather weak IR band in 1-methylcyclohexane
Calculate the detection limit (90% and 95% confidence interval) for a single measurement. Use the equation D.L = (ks)/m
Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution.
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
Draw the product that is formed when (3R, 6R)-6-chloro-2,3-dimethyloctane reacts with sodium iodide in acetone
Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 64.0-g aluminum block. If the aluminum block is initially at 38°C, what is the final temperature of the block
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 25 mL of the concentrated HCl,
How many milliliters of 0.105 M HCl are needed to titrate 50.0 mL of a solution that contains 1.25 g of NaOH per liter?
If the pressure exerted by ozone, O3, in the stratosphere is 3.0 times 10^- 3 atm and the temperature is 254 K, how many ozone molecules are in a liter?
What molecule does a most probable speed of 393 m/s at 25*C? Also calculate the mean speead and root mean square speed.
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