Question

The density of an unknown metal was determined to be 2.85 g/ml. the actual density was 2.70 g/ml. what is the percent error in this determination?

Answer 1

% error =
`(|experimental - theoretical|)/(theoretical)` x 100%

Experimental: 2.85
Actual (theoretical): 2.70

% error =
`(2.85-2.70)/(2.70)` x 100% = .055555 x 100% = 5.56%