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During a lab activity, students calculate the density of an element to be 7.78 g/cm3. The density listed on the periodic table is 7.13 g/cm3. Calculate the percent error and identify the element.

Respuesta :

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7,13+x*7,13=7,78

7,78-7,13=7,13x

0,65=7,13x

0,09=x

Percentage error = 9%
Element: Zn
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Answer:

Percent error = 9.12 %

The element is zinc

Explanation:

The percent error can be calculated using the formula:

%error = [tex]\frac{|Accepted Value - Experimental Value|}{AcceptedValue}[/tex] * 100%

%error = [tex]\frac{7.78-7.13}{7.13}[/tex] * 100 % = 9.12%

To identify the element we need to look in the periodic table for any element that has such a density. In this case it's zinc, Zn.

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