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A solution containing 11.37 g of anthracene, CH 0 and 107.7 g of a substance exhibits...
The spectrochemical series is < Br<< Cl<F-<OH" <H2O <NH3 <en <NO2- < CN- The complex [Ni(Cl)c]...
The spectrochemical series is < Br<< Cl<F-<OH" <H2O <NH3 <en <NO2- < CN- The complex [Ni(Cl)c] is green and the complex [Ni(en)]2+ is violet, where en corresponds to the ethylenediamine ligand. The reason for the difference in the color of these complexes is: Select one: A. The chloride ligand is green, and the ethylenediamine ligand is violet. B. The difference in the coordination numbers of the chloride complex and the en complex. C. The difference in the oxidation states of...
A 5.11 g sample of a compound is dissolved in 154.7 g of benzene. The freezing...
A 5.11 g sample of a compound is dissolved in 154.7 g of benzene. The freezing point of this solution is 1.00°C below that of pure benzene. The compound is a nonelectrolyte. What is the molar mass of this compound? K for benzene = 5.12(°C kg)/mol. (Do not include units in your answer. If you round during your calculations make sure to keep at least 3 decimal places. Report your answer to the nearest whole number.) AT=i Kh Msolute AT...
Be sure to answer all parts. Ethylene glycol (EG), CH (OH)CH (OH), is a common automobile...
Be sure to answer all parts. Ethylene glycol (EG), CH (OH)CH (OH), is a common automobile antifreeze. It is water soluble and fairly nonvolatile (b.p. 197°C). Calculate the boiling point and freezing point of a solution containing 557.5 g of ethylene glycol in 2881 g water. The molar mass of ethylene glycol is 62.07 g/mol. Boiling point: Freezing point: I °C
11.37 and 11.39 The thermostat in a refrigerator filled with cans of soft drinks malfunctions and...
11.37 and 11.39
The thermostat in a refrigerator filled with cans of soft drinks malfunctions and the temperature of the refrigerator drops below 0 degree C. The contents of the cans of diet soft drinks freeze, rupturing many of the cans and causing an awful mess. However, none of the cans containing regular, nondiet soft drinks rupture. Why? Why is it important to know if a substance is a strong electrolyte before predicting its effect on the boiling and freezing...
A certain substance X has a normal boiling point of 116.6 °C and a molal boiling...
A certain substance X has a normal boiling point of 116.6 °C and a molal boiling point elevation constant K =2.07 C-kg-mol - Calculate the boiling point of a solution made of 24.8 g of urea *((NH2),Co) dissolved in 350. 5 of X Be sure your answer has the correct number of significant digits. 19 5 ? Save For Later Submit Assignment Check $ 5 6.
A certain substance X condenses at a temperature of 121.3 °C. But if a 200. g...
A certain substance X condenses at a temperature of 121.3 °C. But if a 200. g sample of X is prepared with 20. g of urea ((NH2), CO) dissolved in it, the sample is found to have a condensation point of 124.3 °C instead. Calculate the molal boiling point elevation constar of X Round your answer to 2 significant digits. •c-mol. kg x 6 ?
Use the thermodynamic data provided below to estimate the boiling point (in K) of V. Report...
Use the thermodynamic data provided below to estimate the boiling point (in K) of V. Report your answer to zero decimal places in standard notation (i.e. 123. kJ *For numbers ending in zero, be sure to include the decimal!*). Substance ΔH°f (kJ/mol) S° (J mol-1K-1) V (l) 17.3 36.1 V (g) 515.5 182.3
Use the thermodynamic data provided below to estimate the boiling point (in K) of CCl4. Report...
Use the thermodynamic data provided below to estimate the boiling point (in K) of CCl4. Report your answer to zero decimal places in standard notation (i.e. 123. kJ *For numbers ending in zero, be sure to include the decimal!*). Substance ΔH°f (kJ/mol) S° (J mol-1K-1) CCl4 (l) -128.4 214.4 CCl4 (g) -96 309.6
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of...
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of being pure gold is warmed to 71.8 "C and submerged into 15.6 g of water initially at 24.2 C. The final temperature of the mixture is 27.0 ° C. Part A What is the heat capacity of the unknown substance? Express your answer using two significant figures. VAED ? J/g. c Submit Request Answer Part B Could the substance be pure gold? yes no
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb...
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
The spectrochemical series is < Br<< Cl<F-<OH" <H2O <NH3 <en <NO2- < CN- The complex [Ni(Cl)c] is green and the complex [Ni(en)]2+ is violet, where en corresponds to the ethylenediamine ligand. The reason for the difference in the color of these complexes is: Select one: A. The chloride ligand is green, and the ethylenediamine ligand is violet. B. The difference in the coordination numbers of the chloride complex and the en complex. C. The difference in the oxidation states of...
A 5.11 g sample of a compound is dissolved in 154.7 g of benzene. The freezing point of this solution is 1.00°C below that of pure benzene. The compound is a nonelectrolyte. What is the molar mass of this compound? K for benzene = 5.12(°C kg)/mol. (Do not include units in your answer. If you round during your calculations make sure to keep at least 3 decimal places. Report your answer to the nearest whole number.) AT=i Kh Msolute AT...
Be sure to answer all parts. Ethylene glycol (EG), CH (OH)CH (OH), is a common automobile antifreeze. It is water soluble and fairly nonvolatile (b.p. 197°C). Calculate the boiling point and freezing point of a solution containing 557.5 g of ethylene glycol in 2881 g water. The molar mass of ethylene glycol is 62.07 g/mol. Boiling point: Freezing point: I °C
11.37 and 11.39
The thermostat in a refrigerator filled with cans of soft drinks malfunctions and the temperature of the refrigerator drops below 0 degree C. The contents of the cans of diet soft drinks freeze, rupturing many of the cans and causing an awful mess. However, none of the cans containing regular, nondiet soft drinks rupture. Why? Why is it important to know if a substance is a strong electrolyte before predicting its effect on the boiling and freezing...
A certain substance X has a normal boiling point of 116.6 °C and a molal boiling point elevation constant K =2.07 C-kg-mol - Calculate the boiling point of a solution made of 24.8 g of urea *((NH2),Co) dissolved in 350. 5 of X Be sure your answer has the correct number of significant digits. 19 5 ? Save For Later Submit Assignment Check $ 5 6.
A certain substance X condenses at a temperature of 121.3 °C. But if a 200. g sample of X is prepared with 20. g of urea ((NH2), CO) dissolved in it, the sample is found to have a condensation point of 124.3 °C instead. Calculate the molal boiling point elevation constar of X Round your answer to 2 significant digits. •c-mol. kg x 6 ?
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of being pure gold is warmed to 71.8 "C and submerged into 15.6 g of water initially at 24.2 C. The final temperature of the mixture is 27.0 ° C. Part A What is the heat capacity of the unknown substance? Express your answer using two significant figures. VAED ? J/g. c Submit Request Answer Part B Could the substance be pure gold? yes no
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
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