The accepted value for the density of gold metal is 19.31 g/cm^3. If a student measured the mass and volume of a sample of gold, and obtained a value of 19.03 g/cm^3, the percent difference would be ______(a) -1.5%(b) 1.5%(c) -0.5%(d) 0.5%The question was asked in quiz.This question is from Errors in Data and Calculations topic in chapter Presentation and Analysis of Data of Bioprocess Engineering

The accepted value for the density of gold metal is 19.31 g/cm^3. If a

1.	The accepted value for the density of gold metal is 19.31 g/cm^3. If a student measured the mass and volume of a sample of gold, and obtained a value of 19.03 g/cm^3, the percent difference would be ______(a) -1.5%(b) 1.5%(c) -0.5%(d) 0.5%The question was asked in quiz.This question is from Errors in Data and Calculations topic in chapter Presentation and Analysis of Data of Bioprocess Engineering
Answer» Correct answer is (a) -1.5% To ELABORATE: % DIFFERENCE = [(19.03 – 19.31) G/19.31 g] x 100% = – 1.5% A percent difference can be POSITIVE or negative; the sign shows whether the experimental value is HIGHER or lower than the actual or theoretical value. This distinction is not used in precision since all values are experimental.

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