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Evaluate 2, 3-pentanediol and 2, 4-pentanediol with respect to the number of stereoisomers possible. Recognize which of the stereoisomers are chiral and which are achiral.
State the structure of the principle product from the reaction of 1-bromopropane with sodium iodide in acetone.
State the structure of the principle product from the reaction of 1-bromopropane with sodium ethoxide in ethanol
coliform bacteria for example e. coli are excreted in large numbers in human and animal feces. water that meets a
if 24g mg is used and the percentage yield is 95 how many grams of magnesium hydroxide should be
Calculate the pH at 25 degrees C of a 0.25-M aqueous solution of oxalic acid (H2C2O4). (Ka1 and Ka2 for oxalic acid are 6.5 x 10^-2 and 6.1 x 10^-5, respectively.)
An ideal gas enters a valve at 500K and 3MPa at a steady state rate of 3 mol/min it is throttled to 0.5 MPa. What is the rate of entropy genration. Is the process reversible.
If 93.5 mol of an ideal gas occuplies 45.5 L at 57.00 C, what is the pressure of the gas.
the water dissociation reaction H2O (l) --> H+(aq) + OH-(aq). What are the standard states for the three species in the two cases? Density of water is 997 kg/m^3.
307g of an unknown mineral is heated to 98.7 C and placed into a calorimeter that contains 72.4 g of water at 23.6C. the heat capacity of the empty calorimeter was 15.7 J/K. the final temperature of the calorimeter is 32.4C. What is the specific h..
What mass of Cu and of N (in grams) are contained in 250.7 g of sample that is 75.4% pure Cu(NO3)2 by mass. (Assume that the impurities do not contain Cu and N.)
A 2.50 g sample containing As2O5, NA2HAsO3, and other materials is dissolved and neutralized. The As(III) is fully titrated by (oxidized by) 11.3 mL of 0.150M I2. All the arsenic present is now in the +5 state. Excess KI is added.
An 18-karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. How many grams of copper are in the necklace? If 18-karat gold has a density of 15.5
Write a balanced equation for the reaction between aqueous solutions of calcium chloride (CaCl2) and sodium carbonate, Na2CO3, Write the net ionic equation for this reaction.
Imagine you preformed Sn2 reaction to form N-methyl benzyl ammonium bromide. The only impurity present in N-methyl benzyl ammonium bromide after the reaction is the benzyl bromide starting material
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