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1. Write an equation describing the hydrolysis of one ester group in tannins by CaCO3. 2. How would longer roasting time of green coffee beans effect its caffeine content
What base is routinely used to clean up an acid spill. Why is it necessary to immediately clean the test tube which contains the silver mirror formed during the Tollen's Test
the two flask are filled with nitrogen gas and when both are immersed in boiling water the gas pressure inside the system is .5 atm. one of the flask is then immersed in an ice water mixture, keeping the other in the boiling water. calculate the n..
An experiment requires 43.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
Toxic cyanide ions can be removed from wastewater by adding hypochlorite: 2CN-(aq)+5OCl-(aq)+H2O(l) --> N2(g)+2HCO3-(aq)+5Cl-(aq) How many liters of 0.125M OCl- are required to remove the CN- in 3.4X10^6L of wastewater in which the CN- conentratio..
Predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixed
0.032 moles of balls, what are the steps the manager would follow to determine how many balls there are and calculate the final total.
Calculate the catalytic efficiency of lysozyme (in units of M-1 s-1), in terms of the rate of encounter of enzyme with substrate. How does this value compare to the diffusion-limited value of k1 = 109 M-1 s-1?
a solution containing 3.50 of sodium carbonate is mixed with one containing 5.00 of silver nitrate. how many grams of
a tank contains a mixture of 3.0 mol of nitrogen 2.0 mol of oxygen and 1 mol of carbon dioxide at 25 degrees and a
When a 1.90 mg sample of methane burns in excess oxygen, how many grams of water and carbon dioxide are formed?
Acetone, C3H6O, and ethyl acetate, C4H8O2, are organic liquids often used as solvents. At 30 degrees C, the vapor pressure of acetone is 285 mmHg and the vapor pressure of ethyl acetate is 118 mmHg.
Why are unsaturated carbonyl compounds UV active but saturated esters and ketones are not UV active
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