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An herbicide is found to contain only C, H, N, and Cl. The complete combustion of a 100.0-mg sample of the herbicide in excess oxygen produces 83.16 mL of CO2 and 73.30 mL of H2O vapor at STP. A separate analysis shows that the sample also contains 16.44 mg of Cl.
(a) Determine the percent composition of the substance.
(b) Calculate its empirical formula.
(c) What other information would you need to know about this compound to calculate its true molecular formula?
Draw the resonance contributors of pyrrole and the cyclopentadienyl anion to demonstrate that all atoms are sp2 hybridized.
Question- Which one of the following groups of functional groups does not have the ability to undergo deuterium exchange in 1H NMR
What is the molar concentration of the solution of 37.5g Ba(MnO4)2 per Liter? What is molar concentration with respect for each ion, Ba2+ and MnO42-
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
If given Cu(OH)2=CuO + ? and separately CuO + HCl= CuCl2 + ? What are the finished equations?
An impure sample of sodium carbonate, Na2CO3, is titrated with 0.150 M HCl according to the reaction below. 2HCl(aq) + Na2CO3(aq) yields CO2(g) + H2O(l) + 2NaCl(aq)
Both Glu and Lys are charged amino acids yet Glu has a significant Rf compared to Lys; explain. ( The solvent/moving phase is 20% acetic acid)
Assuming that the process is working as intended, draw and label the flowchart, do the degree-of-freedom analysis, and estimate the molar flow rate (lb-mole/h) of the humidified outlet air
Problem- Use data from Appendix IIB in the textbook to calculate ?S?rxn for each of the following reactions.
If 0.420 mol of a nonvolatile nonelectrolyte are dissolved in 3.90 mol of water, what is the vapor pressure PH2O of the resulting solution. The vapor pressure of pure water is 23.8 torr at 25.0 degrees C. Express your answer numerically in torr.
A solution containing copper (I), nickel, and Zinc cyanide complexes was eloctrolyzed, and a deposit of 0.175 grams was obtained. the deposit contained 72.8% Cu, 4.30% Ni, and 22.9% ZN. no other element or compound was released.
A waste containing 10,000 mg/L sulfuric acid is neutralized by the addition of concentrated lime slurry [Ca(OH)2]. If the water temperature is 15 degrees Celsius before neutralization, what is the temperature after neutralization
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