There are 3.20 x 10^22 atoms of copper in the outer shell of pennies. How many grams of
copper is this?
if you can please find the formula and molar mass please!

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

How many moles of oxygen react with 12 moles of aluminum

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms