Answered

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Calculate the percent error in the atomic weight if the mass of a Zn electrode increased by 0.3681g and 6.514x10-3 moles of Zn was produced. You may assume the molar mass of elemental zinc is 65.38 g/mol.
a. -13.5%
b. 13.52%
c. -13.52%
d. 13.5%

Sagot :

firdausahmed79

Answer:

13.5%

Explanation:

To answer this you need to understand that percentage error can never be negative as we use absolute value in the equation

To get molar/atomic mass = mass/moles

=0.3681g/(6.514×10^-3)moles

=56.509g/moles

percentage error = (65.38-56.509)/65.38 ×100

=13.56% (this is what I'm getting without rounding off your question wasn't specific on how many d.p to use)

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