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A vitamin C 142g/mol tablet weighing 0.562g is crushed as well as dissolved in enough water to form 500mL of solution. Ten milliliters of this solution is after that diluted to 250mL. The absorbance of the solution is 0.241 in a 1cm cell. Explain what is the percentage of vitamin C in the tablet. The molar absorptivity is 7415.
Give a detailed explanation why SN1 mechanisms are not stereospecific but SN2 mechanisms are very stereospecific causing
What is the rate of reaction of O2? What is the rate of formation of N2O5?
To 2.00 L of .100M of lead(II) nitrate, you add .500 grams of sodium sulfide (Na2S). Being a sodium salt, sodium sulfide is soluble in water. What would you expect to see after the sodium sulfide dissolves
a syringe initially holds a sample of gas with a volume of 285 ml at 355 k and 1.88 atm. to what temperature must the
what is the freeenergy change for the equilibrium between hydrogen iodide hydrogen and and iodine at 453deg? i
A sample of pure R enatiomer of 3-phenyl-2-butanone racemizes when catalytic amounts of acid are present.How would you account for the observation.
A sample of gas occupies 10.5 L at 600 torr and 50C. What volume will it occupy at STP?
An impure sample of copper sulfate weighing 5.52 grams was dissolved in water and allowed to react with excess zinc. CuSO4(aq) + Zn(s) = ZnSO4 (aq) + Cu(s) What is the percent CuSO4 in the sample if 1.49 grams of metallic copper was produced
Calculate the volume of 1.70 m Na3104 in milliliters that contains 3.00 g of solute.
Acetic acid flowing at the rate of 20kg pe min. Product p is of combination leaves at rate of 100 kg per minute. Determine the composition of p?
dropped into flask containing dilute H2SO4 at a pressure P = 1.00bar, and temperature T= 325K. What is the reaction that occurs?
Fluoride (F-) is toxic element (anion) that can be lethal at 0.20 g/70kg of body weight. But because F- at low levels (1ppm) aids in healthy teeth, municipal water sources normally add this level of fluoride.
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