Astudent calculates the density of iron as 6.8 g/cm3 using lab data for mass and volume. a handbook reveals that the correct value is 7.39 g/cm3. what is the percent error?

7.983761 %

Explanation:

Step 1: What is percent error ?

⇒Percent error is calculated using the following formula:

⇒% error  =  | Experimental value-theoretical value/theoretical value |  x 100%

⇔ this can be written as well as : error = (| Experimental value/ theoretical value | - | Theoretical value / Theoretical value | ) * 100%

⇒ which, after simplifying, will become :

%error = (| Experimental value - theoretical value  - 1 |) x 100%

For this case, this means :

%error = ( |6.8 g/cm³ - 7.39g/cm³  - 1 | ) x100%

%error = | 0.92016238 -1 | x100%

%error = |-0.07983761 | x100%

%error = 0.07983761 x100%

%error = 7.983761 %

The %error is 7.983761 %

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