In an experiment, a student placed a beaker on a balance and…
In an experiment, a student placed a beaker on a balance and the mass of the beaker was 132.5 grams. The student then added some copper to the beaker, the mass increased to 147.3 grams. How many moles of copper did the student have? (enter your answer with 3 decimal places and no units, the understood unit is mole)