Is the product pure? how do you know?  here is the results:  Starting mass of benzyl       1.0883g Collected mass of product    0.8957g  Product melting point     135˚C Mixture melting point (product mixed with benzoin)  114˚C Mixture melting point (product mixed with meso-hydrobenzoin)    135˚C

For the reaction of nitrogen and oxygen to form nitrogen dioxide,                                              N2(g) + 2O2(g) ⟷⟷    2NO2(g)              Kc = 1.5×103 If the reaction mixture is found to contain 2.0 M NO2 and 0.10 M N2 and 0.10 M O2, what is the value of Qc and what does this mean? A)Qc = 4×103  B)Rxn will shift to the products C)Qc = 2×102 D)Rxn will shift to the reactants

Q32.

Please answer 1-2 sub-units thank you

For the following chemical reaction, CO (g) + H₂O (g) → CO2 (g) + H₂ (g) Kc = 0.0257 What is the Kc expression for this reaction? O a. Kc = [CO]/[CO2][H2] O b. Kc = [CO2][H2]/[CO] O c. Kc = [CO2][H2]/[CO][H2O] O d. Kc = [CO][H2O]/[CO2][H2]

Calculate Molarity, Normality, ppm, w/v%SHOW ALL WORK (IMAGE ATTACHED)

An experiment was done : Synthesis of a potential enzyme inhibitor The product achieved from the experiment was 4.0g. Using the picture provided determine the percentage yield.

How do we calculate the yield -- based on the following:  Isopentyl alcohol (MW=88.2; d=0.813). Isopentyl acetate (MW=130.19; d=0.9 g/mL). Any assistance and breakdown of steps would be helpful. thanks!

The chemical method of analysis in determination of the blood alcohol content (%BAC) is: K2Cr2O7 + H2SO4 + C2H5OH → Cr2(SO4)3 + K2SO4 + CH3COOH + H2O What are the stoichiometric coefficients for the reaction above? (please enter the coefficients without spaces and with a coma between the numbers, e.g. 1,2,3,4) 2,8,3,2,2,3,11 During a Breathalyzer Test it was determined that 1.75mg of K2Cr2O7 was consumed by the above reaction. Calculate the number of milligrams of ethanol in the test sample. 0.411 Calculate the Blood Alcohol Content in this sample (%BAC).

You begin the reaction with 6.5 mL of t-butyl alcohol (density= 0.775 grams/mL) and 15 mL of concentrated HCl (1.189 grams/mL, 38% HCl) in a distillation flask. Calculate the limiting reagent and the theroretical yield of the product (t-butyl chloride) for this reaction. (Hint:Your starting amount of HCl is 38% of the starting smount).