Answer: 
Explanation:
To calculate the moles, we use the equation:

Given mass of theobromine
= 0.064 g
Molar mass of theobromine 

4 covalent ---because bromine is a non-metal and each atom must share electrons in order to satisfy the octet rule. In a covalent bond, two atoms share a pair of electrons. IOnic bonds form as a result of the transfer of electrons from one atom to another.