Question

After going trick-or-treating with your niece, you help her count the candy bars she collected that night. Using the equal-arm balance you gave her on her birthday (the same balance from the immediately preceding problem; uncertainty of plusminus 0.06 g), you measure the mass of an unopened package of M&M's. You obtain a value of 39.57 g. Your niece then opens the package and you both eat some M&M's. (She's very sweet to share them with you.) The remaining M&M's, still in the package, are placed on the balance. You measure a new mass value of 25.74 g. Using the given information, determine the following quantities. Explain your reasoning. the best estimate for the mass of the eaten M&M's, and the largest and smallest reasonable values for the mass of the eaten M&M's.

Answer 1

1. Mass which has been eaten up is about 13.83 $\pm$ 0.06 gram

2. Largest value is 13.89 g and smallest is 13.76 g , if mass of get moistured after opening is not in consideration.