Question

The accepted value for the heat of vaporization of carbon dioxide is 571 J/g. After doing this lab with carbon dioxide, a student calculates it to be 563 J/g. What is her percent error?

2.45%

-3.33%

-1.40%

0.525%

Answer 1

aceepted value of heat of vaporization of carbon dioxide = 571 J / g

calculated value = 563 J / g

percent error = (accepted - calculated / accepted ) x 100

                      = (571 - 563 / 571 ) x 100

                     = - 1.40 %

answer : - 1.40 %