Students in Mr. Klein's chemistry class are conducting an experiment to calculate the specific heat of a copper sample. Mr. Klein requires each lab team to repeat the experiment until their percent error is 2% or less. Percent error is calculated using observed values (those students calculate from their lab results) and the true value (the accepted value based on reference). The formula for percent error is: (observed - true) x 100 true If the accepted value for the specific heat of copper is 0.385 J/g°C, which of the following lab teams have an unresolved problem on their hands

a.

team 1: calculates 0.392 J/gºC

b.

team 2: calculates 0.395 J/gºC

c.

both teams

d.

neither team

Question

Chemistry

Shirley Bryan

16 October, 04:42

Students in Mr. Klein's chemistry class are conducting an experiment to calculate the specific heat of a copper sample. Mr. Klein requires each lab team to repeat the experiment until their percent error is 2% or less. Percent error is calculated using observed values (those students calculate from their lab results) and the true value (the accepted value based on reference). The formula for percent error is: (observed - true) x 100 true If the accepted value for the specific heat of copper is 0.385 J/g°C, which of the following lab teams have an unresolved problem on their hands

a.

team 1: calculates 0.392 J/gºC

b.

team 2: calculates 0.395 J/gºC

c.

both teams

d.

neither team

+3

Answers (1)

Know the Answer?

Rascal · Answer 1

Percent error in team 1 value:

(0.392 - 0.385) / 0.385 x 100

= 1.81%

Percent error in team 2 value:

(0.395 - 0.385) / 0.385 x 100

= 2.60%

B. Team 2 has an unresolved issue in on their hands, resulting in greater than acceptable error.