How many copper atoms are in a copper penny with a mass of 3.10 g? (Assume that the penny is composed of pure copper.)

How many cm are in  24.2 ft?

What is the formula for determining The Maximum Number of Electrons Using Allowed Quantum Numbers?  

Convert 1.76 yards to centimeters.

Identify the common substance that has the lowest density.

Round the following number to four significant figures and express the result in standard exponential notation:           0.35462

Define an atom.

BONUS POINTS – Do not skip this question! Explain the difference between the Bohr model for the hydrogen atom and the quantum-mechanical model for the hydrogen atom and the the quantum-mechanical model.  Is the Bohr model consistent with Heisenberg’s uncertainty principle?

How many cm are in  24.2 ft?

How many copper atoms are in a copper penny with a mass of 3.10 g? (Assume that the penny is composed of pure copper.)