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3) A 0.360 8 sample of an organic compound con burnt in excess oxygen. When the...
A 0.7498-g sample of a chlorocarbon compound was analyzed by burning it in oxygen and collecting...
A 0.7498-g sample of a chlorocarbon compound was analyzed by burning it in oxygen and collecting the evolved gases in a solution of NaOH. After neutralizing, the sample was treated with 48.85 mL of a 0.2298 M AgNO3 solution. This precipitated the chloride (Cl-) out as AgCl and left an excess of AgNO3. The excess AgNO3 was titrated with 0.1165 M KSCN and required 20.82 mL to reach the endpoint in a Volhard titration. Calculate the % w/w Cl– (35.45...
14. Styrene oxide is a fairly simple aromatic organic compound that has a pleasant odor and is often used in the pe...
14. Styrene oxide is a fairly simple aromatic organic compound that has a pleasant odor and is often used in the perfume industry. If 2.07 g of the compound is vaporized completely into a closed 1.04 L flask at 435 °C, the pressure in the flask is found to be 735 torr. Calculate the formula weight of styrene oxide. 15. a. A sample of dichloroethane, a dry cleaning solvent, is vaporized into a 266.4 mL flask at 99.8 °C. Some...
I have an unknown organic compound containing carbon, hydrogen and oxygen. Combustion analysis of 4.05 g...
I have an unknown organic compound containing carbon, hydrogen and oxygen. Combustion analysis of 4.05 g sample of the unknown produced 8.07 g CO2 and 3.76 g H2O. The molar mass of the unknown was determined to be 180 +/- 4 g/mol. What is the molecular formula of the unknown?
12.105 A compound of manganese, carbon, and oxygen con- tains 28.17% Mn and 30.80% C. When 0.125 g of this com- "the pound is dissolved in 5.38 g of cyclohexane, the solution freezeslipid at...
12.105 A compound of manganese, carbon, and oxygen con- tains 28.17% Mn and 30.80% C. When 0.125 g of this com- "the pound is dissolved in 5.38 g of cyclohexane, the solution freezeslipid at 5.28 C. What is the molecular formula of this compound? 12.1
12.105 A compound of manganese, carbon, and oxygen con- tains 28.17% Mn and 30.80% C. When 0.125 g of this com- "the pound is dissolved in 5.38 g of cyclohexane, the solution freezeslipid at 5.28...
Combustion of a 1.025 g sample of a compound containing only carbon, hydrogen and oxygen produced...
Combustion of a 1.025 g sample of a compound containing only carbon, hydrogen and oxygen produced 2.265 g of CO2 and 1.236 g of H2O. What is the empirical and molecular formulas of the sample compound, if its molecular weight has been roughly determined to be 363 g/mol by mass spectrometer?
The Dumas method can be used to determine the amount of nitrogen in an organic compound....
The Dumas method can be used to determine the amount of nitrogen in an organic compound. This method involves passing the compound over hot, solid CuO, where it decomposes to give N2, CO2 and H2O (g). The gaseous products are passed through a concentrated KOH solution to remove the CO2 and then through H2O. After the passage through H2O the gas contains only N2 saturated with water vapor. When a 0.253-g sample of a certain compound is treated in this way...
Furnace 02 H20 absorber CO, absorber Sample A 8.222 gram sample of an organic compound containing...
Furnace 02 H20 absorber CO, absorber Sample A 8.222 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 20.74 grams of CO2 and 3.640 grams of H20 are produced. In a separate experiment, the molar mass is found to be 122.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound. Enter the elements in the order C, H, O empirical formula molecular formula 11:0) absorber CO, absorber Sample...
An organic acid was isolated and purified by recrys- tallization of its barium salt. To determine the equiva- lent weight of the acid, a 0.393-g sample of the salt was dissolved in about 100 mL of wa...
An organic acid was isolated and purified by recrys- tallization of its barium salt. To determine the equiva- lent weight of the acid, a 0.393-g sample of the salt was dissolved in about 100 mL of water. The solution was passed through a strong-acid ion-ex- change resin, and the column was then washed with water; the eluate and washings were titrated with 18.1 mL of 0.1006 M NaOH to a phenolphthalein end point. (a) Calculate the equivalent weight of the...
Calculate the heat evolved when 0.500 g of Cl, (g) reacts with an excess of HBr...
Calculate the heat evolved when 0.500 g of Cl, (g) reacts with an excess of HBr (g) to form HCI (g) and Br, (0, given the following standard enthalpies of formation (kJ/mol): HCI (B), - 92.30; HBr (g), -36.20. Ryan Experiment 4 Advance Study Assignment: Determination of a Chemical Formula 1. To find the mass of a mole of an element, one looks up the atomic mass of the element in a table of atomic masses (see Appendix III or...
Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () ...
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Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () 3. Inst s approval of apparatus C. Determination of Vol ume, Temperature, and Pressure of the Carbon Dioxide Gas 1. Initial reading of volume of water in CO.-collecting graduated cylinder (mL) 2. Final reading of volume of water in CO-collecting graduated cylinder (mL) 3. Volume of CO,(g) collected (L) 4. Temperature of water C) 5....
14. Styrene oxide is a fairly simple aromatic organic compound that has a pleasant odor and is often used in the perfume industry. If 2.07 g of the compound is vaporized completely into a closed 1.04 L flask at 435 °C, the pressure in the flask is found to be 735 torr. Calculate the formula weight of styrene oxide. 15. a. A sample of dichloroethane, a dry cleaning solvent, is vaporized into a 266.4 mL flask at 99.8 °C. Some...
12.105 A compound of manganese, carbon, and oxygen con- tains 28.17% Mn and 30.80% C. When 0.125 g of this com- "the pound is dissolved in 5.38 g of cyclohexane, the solution freezeslipid at 5.28 C. What is the molecular formula of this compound? 12.1
12.105 A compound of manganese, carbon, and oxygen con- tains 28.17% Mn and 30.80% C. When 0.125 g of this com- "the pound is dissolved in 5.38 g of cyclohexane, the solution freezeslipid at 5.28...
Furnace 02 H20 absorber CO, absorber Sample A 8.222 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 20.74 grams of CO2 and 3.640 grams of H20 are produced. In a separate experiment, the molar mass is found to be 122.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound. Enter the elements in the order C, H, O empirical formula molecular formula 11:0) absorber CO, absorber Sample...
An organic acid was isolated and purified by recrys- tallization of its barium salt. To determine the equiva- lent weight of the acid, a 0.393-g sample of the salt was dissolved in about 100 mL of water. The solution was passed through a strong-acid ion-ex- change resin, and the column was then washed with water; the eluate and washings were titrated with 18.1 mL of 0.1006 M NaOH to a phenolphthalein end point. (a) Calculate the equivalent weight of the...
Calculate the heat evolved when 0.500 g of Cl, (g) reacts with an excess of HBr (g) to form HCI (g) and Br, (0, given the following standard enthalpies of formation (kJ/mol): HCI (B), - 92.30; HBr (g), -36.20. Ryan Experiment 4 Advance Study Assignment: Determination of a Chemical Formula 1. To find the mass of a mole of an element, one looks up the atomic mass of the element in a table of atomic masses (see Appendix III or...
help
with remaining calculations please
Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () 3. Inst s approval of apparatus C. Determination of Vol ume, Temperature, and Pressure of the Carbon Dioxide Gas 1. Initial reading of volume of water in CO.-collecting graduated cylinder (mL) 2. Final reading of volume of water in CO-collecting graduated cylinder (mL) 3. Volume of CO,(g) collected (L) 4. Temperature of water C) 5....
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