1013 %Mass Measurements (procedure)The mass of three metal rounds is measured, one at a time, in grams and oz onanalytical balance, and data entered in the appropriate column in Table 2. First,one of the metal rounds is placed on analytical balance, set on gram (g) unit, anddata obscrved and recorded to the nearest hundredths of a gram on the Data Table2, first row, second column. Then, the unit on the balance is switched to ounce(oz) scale and the mass of the same metal round is measured in oz and the data isentered first row, third column. The same procedure of measuring the mass ingram and oz continues for the second and third metal rounds, and data entered intheir respective second and third rows and columns.AssignmentFrom the theoretical mass in gram and oz measurement data in the second andthird columns, calculate the ratio of mass in the units of the two measurementsystems, by dividing the mass gram to the mass in ounce, in each row and enterthe value in the last column (ratio g/oz). The mean of the ratios (observedmean), which should be near the standard value (28.35 g/oz) is calculated byadding the ratios in the three replications and dividing it by three. The percenterror of your measurements is calculated using the following formula.% Error=*/Standard value-observed mean/x 100Standard value*absolute difference (no negative sign)Table 2. Mass MeasurementsReplicateMass (g)Mass (oz.)(20 /3) oT## 21.462.74083.11000Mean% Error马a0aD

Question

Accepted Answer

%Error  ={(Standard value-observed mean)/Standard value}x100
ratio = mass (g) /mass (oz)