In an experiment, 25.00 g of unknown non-electrolyte is dissolved into 350 mL of pure water and the solution has a new boiling point of 103.75o Determine the molar mass of the compound if the Kb of water is 0.512oC/m. (The density of water is 1.00 g/mL).

Which of the following solutions will have the lowest vapor pressure?

Determine the ΔHorxn for this reaction at 25 °C using the information given below: 2H2S (g) + 3O2 (g) → 2H2O (l) + 2SO2 (g) Substance ∆Hoformation (kJ/mol) SO2 (g) -296.8 H2O (g) -241.8 H2O (l) -285.8 H2S (g) -20.6 H2S (aq) -39.4

In an experiment, 20.00 g of unknown non-electrolyte is dissolved into 250 mL of pure water and the solution has a new boiling point of 102.75o Determine the molar mass of the compound if the Kb of water is 0.512oC/m. (The density of water is 1.00 g/mL).

Determine the average rate of the reaction over the time interval from 10 to 35 seconds.   Time (s) [A] in M 0 0.250 5 0.217 10 0.192 15 0.172 20 0.156 25 0.143 30 0.132 35 0.122 40 0.114 45 0.106 50 0.100 55 0.0943 60 0.0893  

The rate law for a hypothetical reaction was determined to be Rate=k[X]2[Z]1/2. What happens to the rate when X is tripled (3x) and Z is quadrupled (4x)?

A household bleach solution contains about 6.30% by mass sodium hypochlorite (NaOCl). Assume the density of the solution is 1.01 g/mL. Express the concentration in molality.

Use the molecules below to answer the questions that follow. Make sure all your work is shown and is neat and organized to receive credit.   1.Choose the molecule(s) above that would be miscible/soluble in water. (1 point)    2. List all the intermolecular forces present between each solute(s) you chose in question 1 with water and circle the strongest intermolecular force. (1 point)    3. Draw and label the strongest intermolecular force(s) from question 2. Make sure you include at least two solute molecules and three water molecules. (2 points)  4. Explain in two to three sentences why the selected molecule is miscible/soluble with water. Include clear reasoning using your knowledge of chemistry. (1 point)   

Aspartame (C14H18N2O5) is a sweetener used in diet sodas. What is the mole fraction of aspartame if 91.2 g is added to 111 g of water?

Which city our school is located.