Question

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?

Answer 1

a.
team 1: calculates 0.392 J/gºC
b.
team 2: calculates 0.395 J/gºC
c.
both teams
d.
neither team

Answer 2

Plug in to the equation and resolve

Answer 3

into*

Answer 4

I legit dont have anything to do this with, and Ive been struggling with this question for a little bit. Im not exactly sure what to do because this is the complete oppisite of what I was learning when i was in an actual class.

Answer 5

are you in college or high school ?

Answer 6

High school

Answer 7

look , true = the accepted value based on reference

Answer 8

in this case true = 0.385 J/g C

Answer 9

I probably seem really stupid, Im not, I just switched to online Biology and we didnt learn did last semester.
But thank you!

Answer 10

HEY take it easy

Answer 11

so what exactly is troubling you ?

Answer 12

in genreal,
observed - 0.385 X 100 < = 2 % error
or in other words:
percent error < = 2 %

Answer 13

plug the values in the observed and find the answer out

Answer 14

Ok, thank you! I appreciate it

Answer 15

\[ |Approximate Value - Exact Value| × 100% divide by exact value, i forgot that lol

Answer 16

it says i he only gives them a 2% or less or would it be both?

Answer 17

so*

Answer 18

observed - 0.385(units) x 100 / 0.385(units) <= 2 % . t

Answer 19

s

Answer 20

the units cancel out

Answer 21

also "observed" have the same units

Answer 22

one question where are the values observed by each team ?