Question
Hi & Good Morning Cramster Family, After I have calculated all my answers for Heat Gained ByWater, Heat Lost by Metal, Specific Heat of Metal, Average SpecificHeat, Literature Value for Specific Heat and have concludedAluminum was used, the percent error my answer is .9008 - .8305, sowhat I did was take the .8305 x 100 percent to equal 8.465percent. Would that be -8.5 percent dropping the last twosignificant digits, do I round up? Thank you kindly foranswering it is very much appreciated. Sincerely, Jeannette Hi & Good Morning Cramster Family, After I have calculated all my answers for Heat Gained ByWater, Heat Lost by Metal, Specific Heat of Metal, Average SpecificHeat, Literature Value for Specific Heat and have concludedAluminum was used, the percent error my answer is .9008 - .8305, sowhat I did was take the .8305 x 100 percent to equal 8.465percent. Would that be -8.5 percent dropping the last twosignificant digits, do I round up? Thank you kindly foranswering it is very much appreciated. Sincerely, Jeannette
Explanation / Answer
Percent error = (difference of the calculated , realvalue)x100 If difference is 0.8305 then you must divide 0.8305 byreal value and then multiply the result with 100 , round up . Your question was not clear , the follwing excercise mayhelp you . Number significant figures 83.5013 2 -8.5 1 (need not to consider the sign) -85.05 2