Given the balanced equation representing a reaction:
2fe + 3cu2+ ==> 2fe3+ + 3cu
when the iron atoms lose six moles of electrons, how many moles of electrons are gained by the copper ions?
(1) 12 moles (3) 3 moles
(2) 2 moles (4) 6 moles

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Which compound contain an iron with a 3+ charge

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!