Question

A student used standard solutions of aspirin in a FeCl3-KCl-HCl mixture to plot a graph of molarity versus absorbance for diluted aspirin solutions of known concentration. The student determined the slope of the graph to be 4,598 M-1cm-1. Next the student measured out 0.283 grams of a headache medicine tablet and dissolved it in 10.0 ml of NaOH and then added enough water to make a 100 ml solution. Five ml of this solution was then added to another 100 ml flask and diluted to the mark with enough FeCl3-KCl-HCl mixture. The solution was then measured for absorbency as 0.315

Answer 1

The student performed an experiment to determine the absorbance of a diluted aspirin solution. The data collected will help calculate the molarity of the headache medicine tablet.

Step-by-step explanation:

The student used a standard solution of aspirin to create a graph of molarity versus absorbance. The slope of the graph was determined to be 4,598 M-1cm-1. The student then measured out 0.283 grams of a headache medicine tablet and dissolved it in NaOH, resulting in a 100ml solution. Five ml of this solution was added to another flask and diluted with FeCl3-KCl-HCl mixture. The absorbance of this solution was measured as 0.315.

Answer 2

is any thing which has mass volume and empty space