The accepted value for the density of iron is 7.87 g/cm3. a student records the mass of a 20.00 cm3 block of iron as 153.8 grams. what is the percent error for the density measurement?

a. 2.29%

b. 2.34%

c. 19.4%

d. 7.69%

The density of an object can be calculated using the formula Density = Mass/Volume.

Experimental Density:

Density = 153.8g / 20.00 cm^3

Density = 7.69g/cm^3

Percent error equation:

% Error = | Theoretical Value - Experimental Value|/Theoretical Value * 100

% Error = | 7.87g/cm^3 - 7.69g/cm^3|/7.87g/cm^3 * 100

% Error = 2.29%

Therefore a is the correct answer.