For each of the following errors, tell whether your calculated molecular weight would be too high, too low, or unaffected.
a) unawares, you inadvertently spilled some solute(so it didn't make it into the test tube) after it was weighed out.
b) your thermometer is poorly calibrated and reads 0.3C lower than the actual temperature.
c) while mixing the solution you spilled some over the sides of the test tube. Assume the solution was well mixed before the spill occurred.
For each of the following errors, tell whether your calculated molecular weight would be too high,...
Molecular Mass by Freezing point Depression (Preliminary Lab) The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solute (too high,too low, no effect)? Explain your answer. (a) The thermometer uses actually read 1.4C too high. (b) Some of the solvent was spilled before the solute was added.
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...