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Maximum yield of benzocaine that I could obtain from experiment based on the amount of p-toluidine used in step one is 8.2099 g step one calculate the % yield of n-acetyl-p-toluidine MW: 149.19g/mol, if im starting with 5.33g of p-toluidine MW: 107.16 g/mol. (mass not recorded) step 2 n-acetyl-p-toluidine to p-acetamidobenzoic acid MW: 179.17g/mol . mass obtained 2.18 g step 3 starting with 2.18 g of p-acetamidobenzoic acid to p-aminobezoic acid MW: 137.14 g/mol. step 4 starting with 1.215 g of p-aminobenzoic acid to ethyl p-aminobenzoate MW: 165.19 g/mol. mass of ethyl-p-aminobenzoate obtained 0.831 g
Pure silver has a density of 10.50 g/cm3. A 22.8 gram sample reputed to be silver displaces 2.0 mL of water. Is the sample pure silver? and why?
A 4.82-L sample of carbon monoxide is collected at 55°C and 0.833 atm. What volume will the gas occupy at 1.05 atm and 25°C?
commercial concentrated aqueous ammonia is a solution of 28.0%, by mass, ammonia, NH3, (molar mass=17.0 g/mol) in water. the density pf the solution is .900g/mL.
identify a chemical reagent used in this experiment that can be used to distinguish cacl2 (soluble) from CaCo3 (insoluble)
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 251{rm torr} . Pure pentane and hexane have vapor pressures of 425
Automobile airbags contain solid sodium azide, NaN3, that reacts to produce nitrogen gas when heated, thus inflating the bag. Calculate the value of w (work) for the following system if 11.8 g of NaN3 reacts completely at 1.00 atm and 22 °C.
The "roasting" of 48.7 g of ZnS at constant pressure gives off 220. kJ of heat. Calculate the DH for this reaction. 2ZnS(s) + 3O2(g) ® 2ZnO(s) + 2SO2(g)
calculate the pH of the solution that results from adding 8.50ml of 0.100M NaOH to 50.00 mL of a 0.0500M solution of acetic acid.
Aqueous silver nitrate was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of silver halides obtained was 0.9974 g. What are the molarities of HCl and HBr in the original solution
What percent of the hydrogen peroxide has been decomposed in mixture of (0.10M KI = 15.0mL, H2O= 35.0 mL and 3% hydrogen peroxide= 10.0 mL) when 20.0 mL of O2 gas has been evolved
what can we conclude about the energy required to excite an electron from n=5 to n=6 versus the energy required to excite an electron from n=4 to 5.
Assuming levels of atmospheric CO2 are 390 ppm CO2, what is the pH of rainwater in equilibrium with the atmosphere for the estimated future atmospheric CO2 concentration of 780 ppm,v.
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