1) The absorbance of a cationic iron(II) sample solution was measured in a spect
ID: 1006641 • Letter: 1
Question
1) The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 L of the sample and injecting it into a cuvette already containing 2.00 mL of water (total volume is 2.00 mL + 100.0 L). The absorbance value of the diluted solution corresponded to a concentration of 6.80×106 M . What was the concentration of the original solution?
2)What did Rutherford expect to happen when he aimed particles at the gold foil?
Check ALL that apply.
A. Rutherford expected the particles to react with gold atoms forming a new compound. B. Rutherford expected the particles to stop moving after touching the gold foil. C. Rutherford expected the particles to reflect from the gold foil and return in the opposite direction. D. Rutherford expected the particles to be deflected from their straight paths as they passed through the gold foil. E. Rutherford expected the particles to travel in straight paths through the gold foil.Explanation / Answer
2.At that time, the plum pudding model of the atom was proposed by Thomson and it was thought that the positive charge was smeared out over essentially the volume of the atom. Rutherford expected the vast majority of alpha particles to be deflected.
So D
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.