Question : Four different types of volumetric glassware were used to determine t
ID: 914707 • Letter: Q
Question
Question:
Four different types of volumetric glassware were used to determine the density of water. Five measurements were made using each glassware. The average and standard deviation of the five measurements are listed in the table below. Which glassware gives the most precise measurement of the water density? PLEASE EXPLAIN HOW YOU GOT YOUR ANSWER.
Glassware
Average density of water (g/mL)
Standard deviation of water (g /mL)
Type 1
0.95
0.08
Type 2
0.99
0.03
Type 3
0.90
0.10
Type 4
0.85
0.22
Glassware
Average density of water (g/mL)
Standard deviation of water (g /mL)
Type 1
0.95
0.08
Type 2
0.99
0.03
Type 3
0.90
0.10
Type 4
0.85
0.22
Explanation / Answer
Since the standard density of water is 1g/ml and in case type 2 it is nearest to that with least deviation. So it would give most precise deviation.