= (Number of new pennies) / (Total number of pennies) 3. Calculating Average Atomic Mass
The atomic number would be 1 , because all the coins are pennies. In the real world, the atomic number is determined by the number of protons; in this analogy, the "proton" is what makes a penny a penny. isotopes of pennium lab answer key
[ \frac\textTotal mass of all pennies\textTotal pennies = \frac54.8820 = 2.744 \text g ] = (Number of new pennies) / (Total number of pennies) 3