Answer:
Assuming a penny is made of pure copper Cu, then the molar mass of Cu can be used to determine the number of atoms in a penny.
The number of atoms in a mole is the Avogadro constant [math]N_{0}[/math]
The molar mass of Cu is [math]M_{Cu} =[/math] 63.546 grams per mole Cu
How Much Does A Penny Weigh? U.S. pennies since 1982 weigh 2.5 grams or 3.11 grams
Use the Moles to Grams Conversion Formula to solve for moles N[math]_{Cu}[/math]
Choose the mass of a penny to be [math]m_{penny}[/math] = 2.5 g for this question. (Repeat it with [math]m_{penny}[/math] = 3.11 g for yourself.)
Solution:
Find the number of moles of Cu in a penny [math]N_{Cu}[/math]
Find then number of atoms using
Step-by-step explanation: