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Which one of the following compounds is the most acidic? Why? A. 1-Phenylethanol B. 2-Phenylethanol C. o-Ethylphenol D. Ethyl phenyl ether E. Nitrobenzene
A canister is filled with 320 g of ice and 100. rm g of liquid water, both at 0 rm{^{circ}C} . The canister is placed in an oven until all the rm H_2O has boiled off and the canister is empty. How much energy in calories was absorbed?
in a hydrogen atom the 2s and 2p orbitals have the same energy. however in a boron atom the 2s electrons have a lower
What is the new pressure, in atm,when the air is placed in tanks that have the following volumes, if there is no change in temperature and amount of gas?
The pressure on 200 ml of oxygen gas changes from 380 mm hg to 760 mm hg. The temperature does not change. What is the new volume of the oxygen gas?
An unknown compound with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat. From the reaction, only one compound with the formula C8H17Cl can be isolated. What is the structure of the original unknown compound?
How many molecules of NH3 do you have when you have 2.6 moles of NH3. How many moles of water do you have when you have 1.12 x 10 26 molecules of water
determine the empirical formula of a compound having the following percent composition by mass k
The sugar in deoxyribonucleic acid, DNA, is called 2-deoxy-D-ribose. This sugar has two stereocenters. 2-Deoxy-D-ribose has how many diastereomers
How many liters of oxygen collected over H2O and measured at 27 degrees Celsius and 745.0 mm Hg can be prepared by decomposing 4.421 grams of gold (III) oxide? The vapor pressure of H2O at 27 degrees Celsius is 26.7 mm Hg.
What volume of 1 M NaOH would you need to add to 200 mL of 0.2 M acetic acid solution to achieve a pH of 7.0 (the pKa of acetic acid is 4.76)? A)0.23 mL B)6.952 mL C)173.8 mL D)39.77 mL
On the basis of your data what conclusion may be made regarding the separating ablility of simple and fractional distillation? comment on how well your results compare with what might be expected using your actual data below
A solution of ethanol (C2H5OH) in water is prepared by dissolving 87.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
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