Moving to another question will save this response. estion 12 If the experimental value of van't Hoff factor for a solute in a 0.30 M solution is 1.53, determine the osmotic pressure in atm of this solution at 34 °C. (the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation-examples include 1.23 and 12.3 and 123 and 123.) Question 12 of 29

Using Zaitsev's rule, choose the most stable alkene among the following. Draw out the structures of each of the options then select the correct answer. Recall that Zaitsev's Rule is about alkene stability. The trend for this is similar to the trend for carbocation stability. Either more or fewer groups on the alkene (and the carbocation) make it more stable. This question is wanting you to remember if it's more or fewer. A) 1,2-dimethylcyclohexene B) 1,6-dimethylcyclohexene C) cis-3,4-dimethylcyclohexene D) They are all of equal stability according to Zaitsev's rule. Provide the major dehydration product of the following reaction. Recall which of the four substitution and elimination reactions a dehydration is. Before you do your S# or EF mechanism, remember what heteroatoms do in the presence of an acid (aka-the-OH is a bad leaving group, but protonating it might turn it into a good one). Don't forget to apply the concept from the previous question. OH Ht A

114. mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The osmotic pressure of this solution is measured to be 0.0231 atm at 25.0 °C. Calculate the molar mass of the protein. Be sure your answer has the correct number of significant digits. mol

107. mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The osmotic pressure of this solution is measured to be 0.0197 atm at 25.0 °C. Calculate the molar mass of the protein. Round your answer to 3 significant digits. mol X