Why is electron affinity positive when the second electron is added to oxygen

Just make up some random stuff and send it to me on discord Spawn#5567 Download docx

Which half-reaction would likely occur at the anode of a fuel cell that uses hydrogen as a fuel? hydrogen atoms becoming hydrogen ions hydrogen ions joining with oxygen to form water hydrogen ions becoming hydrogen atoms hydrogen atoms joining with

If 1.98 moles of C are reacted with an excess of Cu2O how many moles of CO would be produced? moles

Which of processes of water cycle occur by releasing energy

During the day, the temperature of the sand in a desert rises as the sand is heated by the sun. After the sun sets, the sand cools. What happens to the heat energy in the sand as it cools? A) It is destroyed. B) It is used by the sand to do work.

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

What is the nuclear charge of an alpha particle?

How many protons electrons and neutrons does 13C contain