Question
The density of copper is listed as 8.94 g/cm to the third. Two students each make three density determinations of samples of the substance. Student A's results are 7.3 g/mL, 9.4 g/mL, and 8.3 g/mL. Student B's results are 8.4 g/cm to the third, 8.8 g/cm to the third, and 8.0 g/cm to the third. Comparing the two results how close are they in precision and accuracy?
Answers
The average of student B is 8.40 g/cc. The average of student A is 8.33 g/cc.
The range of A is 8.0-8.8 or 0.8 from low to high.
The range of B is 7.3 to 9.4 or 2.1 from low to high.
Which do you think is closest to the accepted value? Which has the most closely spaced values?
The range of A is 8.0-8.8 or 0.8 from low to high.
The range of B is 7.3 to 9.4 or 2.1 from low to high.
Which do you think is closest to the accepted value? Which has the most closely spaced values?
yes
yeas
Related Questions
Consider a copper lattice with an excessive average of one vacancy in every 100 unit cells. What wil...
Copper is a metal that is used for many purposes. It is mined from the earth using various methods....
Students listed methods to help conserve the world's copper supply. Which method might actually incr...