The class is about heat, waves, and light. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

A 3-g copper penny has a positive charge of 6.6 uC. What fraction f of its electrons has it lost? f = abc sin(x Ox10 Submit Reset Reset All .First find the total charge of all the electrons in the penny. .There are 6.022 x 102 atoms of copper (one mole) in every 63.55 grams of copper, each of which has 29 electrons..as you can check by looking at the periodic table on the inside back cover of the text