[Review Topica] [References) Use the References to access important values if needed for this question. The common laboratory solvent diethyl ether (ether) is often used to purify substances dissolved in it. The vapor pressure of diethyl ether, CH;CH,0CH,CH3, is 463.57 mm Hg at 25 °C. In a laboratory experiment, students synthesized a new compound and found that when 5.823 grams of the compound were dissolved in 156.3 grams of diethyl ether, the vapor pressure of the solution was 456.57 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight of this compound? diethyl ether = CH;CH,OCH,CH3 = 74.12 g/mol. MW g/mol Submit Answer Retry Entire Group 9 more group attempts remaining ed 8:43 P 11/17/202

Molality   A solution contains 22.5 g of methanol, CH3OH, dissolved in sufficient water to give a total mass of 105.3 g. The molar mass of CH3OH is 32.4 g/mol. What is the molality of the aqueous methanol solution?

3) Camphor (CoH160) melts at 179.8 °C, and it has a particularly large freezing point depression constant of 40.0 "C/m. When 0.186 g of an organic substance of unknown molar mass is dissolved in 22.10 g of liquid camphor, the freezing point of the mixture is found to be 176.7 C. What is the molar mass of the organic substance?

[References] Use the References to access important values if needed for this question. The boiling point of benzene, Ce He, is 80.10 °C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene Is TNT (trinitrotoluene). A student dissolves 11.96 grams of TNT, C7H5N3O6 (227.1 g/mol), In 261.0 grams of benzene. Use the table of boiling and freezing point constants to answer the questions below. Solvent Kb (°C/m) K₁ (°C/m) Water 0.512 1.86 Ethanol 1.22 1.99 Chloroform 3.67 Benzene 2.53 2.02 Formula H₂O CH3CH₂OH CHC13 C6H6 Diethyl ether CH3 CH₂ OCH₂ CH3 The molality of the solution is The boiling point of the solution is Submit Answer m. Show Hint °C. Retry Entire Group 9 more group attempts remaining 5.12 Cengage Learning Cengage Technical Support MacBook Air Previous Next> Save and Exit

Estimate the boiling point of 5 LL of water to which a teaspoon (6 gg) of salt (NaCl)(NaCl) has been added.

The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor pressure of chloroform , CHCI2, is 173.11 mm Hg at 25 °C. In a laboratory experiment, students synthesized a new compound and found that when 9.963 grams of the compound were dissolved in 278.4 grams of chloroform, the vapor pressure of the solution was 170.58 mm Hg. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight of this compound? chloroform = CHCI3 = 119.40 g/mol. MW = g/mol

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Solutions of hydrogen in palladium may be formed by exposing Pd metal to H₂ gas. The concentration of hydrogen in the palladium depends on the pressure of H₂ gas applied, but in a more complex fashion than can be described by Henry's law. Under certain conditions, 0.56 g of hydrogen gas is dissolved in 197 g of palladium metal. (The density of the resulting solution is 11.7 g/cm³.) (a) Determine the molarity of this solution.

The common laboratory solvent chloroform is often used to purify substances dissolved in it. The vapor pressure of chloroform , CHCI3, is 173.11 mm Hg at 25 °C. In a laboratory experiment, students synthesized a new compound and found that when 7.339 grams of the compound were dissolved in 176.5 grams of chloroform, the vapor pressure of the solution was 170.01 mm Hg. The compound was also found to be nonvolatile and a non- electrolyte. What is the molecular weight of this compound? chloroform CHCI3 = 119.40 g/mol. %3D MW g/mol

5. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is TNT. Calculate the vapor pressure of the solution at 25 °C when 12.12 grams of TNT, C,H;N;Os (227.1 g/mol), are dissolved in 155.7 grams of benzene. benzene = CHs = 78.12 g/mol.