Question

procedure: day 1 - students found the mass in grams of their shelled eggs, recording the mass in the data table. the eggs were placed in a beaker and covered with 200 ml vinegar to remove the shells. day 2 - the eggs were removed from the vinegar. visual observations were recorded. the shell - less eggs were wiped dry, massed, and the mass was recorded in the data table. the eggs were placed in a clean beaker and covered with a 10% salt - water solution. day 3 - the eggs were removed from the salt water and visual observations were made and recorded. the eggs were wiped dry, massed, and the mass was recorded. the eggs were placed in a clean beaker and covered with sugar (kayro) syrup. day 4 - the eggs were removed from the syrup and visual observations were made and recorded. the eggs were carefully wiped with a damp cloth, massed, and the mass was recorded. the student data was recorded in the data table. prior to the start of the experiment, the students hypothesized that both the vinegar and kayro syrup solutions would be hypertonic to the contents of their eggs. the student data can be seen in the data table above. does this data confirm their initial hypothesis? explain. a yes. in both instances, the vinegar solution and kayro syrup, the egg lost mass. b no. the egg in vinegar was an isotonic situation; the egg in syrup was hypertonic as it lost mass. c no. the egg initially in vinegar had an increase in mass therefore vinegar would be hypotonic to the eggs contents. d no. the egg in kayro syrup had a decrease in mass therefore syrup would be hypotonic to the eggs contents.

Explanation:

In osmosis, if a solution is hypertonic to the cell (or egg in this case), water will move out of the cell and the cell will lose mass. If it's hypotonic, water will move in and mass will increase. If isotonic, there is no net movement of water and mass remains the same. If the egg in vinegar had an increase in mass, it means vinegar is hypotonic to the egg's contents, disproving the hypothesis that vinegar is hypertonic.

Answer:

C. No. The egg initially in vinegar had an increase in mass therefore vinegar would be hypotonic to the egg's contents