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Which one of the following alkyl halides gives the highest ratio of substitution to elimination on treatment with sodium ethoxide in ethanol, and why?
a. 1- bromopentane
b. 2-bromopentane
c. 3- bromopentane
d. 1-bromo 2- methylbutane
e. 2-bromo- 2 methylbutane
What is the molarity of a solution made by dissolving .34 moles of NaCl in 455 mL of water?
a sample of 34.0 grams of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 4.75 grams
Describe the formation of malonyl-CoA, showing structures. Be sure to list the enzyme that catalyzes the reaction.
Derive an expression for (dH/dp)T soley in terms of T, p, V. Show that this quantity is identically zero for an ideal gas and find the equivalent expression for a van der Waals gas
describe the change in conductivity as the concentration of the NaCl solution was increased by the addition of NaCl drops
Which instrument can be used to determine the total calcium in a small blood sample.suggest a second method suitable for determine the free calcium ions on a similar sample of bood.
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of PbO2(s) will be: BrO3-(aq) + Pb(OH)42-(aq) --> Br-(aq) + PbO2(s)
moles of dye in 50 mL of solution is consumed in 188 seconds, what is the average rate of consumption of dye in mol/L.s?
What volume of .01M HCL must be added to 20 ml of .04M phosphate buffer, pH 6.50, to reduce the pH to 5.5. pK of phosphate buffer is 7.20
Calculate the following values for a 0.0150 M solution of NaH2A. and Calculate the following values for a 0.0150 M solution of Na2HA.
calculate the theoretical mass of nylon 6,10, in order to find out the percent yield. - 1mL of sebacyl chloride was used (density = 1.121g/mL) and 2.3 grams of 1,6 hexanediamide
Suppose that a radiologist who is 4.0 m from a small, unshielded source of radiation receives 3.4 units of radiation. To reduce the exposure to 0.34 units of radiation, to what distance from the source should the radiologist move?
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