Percent error is a measure of experimental accuracy. It is calculated as the ratio of the difference of the average measurement and the known values divided by the known value: % error =(knownvalueaveragemeasurementknownvalue)100 The density of a substance is determined by making three measurement of 2.98,2.77, and 2.86g/mL. The known value is 2.5g/mL. Calculate the percent error of the measurements