The complete chemical reaction of aqueous Sodium sulfate and aqueous Barium nitrate is

The right side and the left side of the reaction have equal number of elements, therefore it is balanced.
Answer:
<h2>Oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.</h2>
<h3>Valence electrons are the electrons in the outermost shell, or energy level, of an atom. </h3>
<h3>Configuration of oxygen's valence electrons as 2s²2p⁴.</h3>
Explanation:
#Let's Study
#I Hope It's Help
#Keep On Learning
#Carry On Learning

Answer:
physical change because even though gas formation was observed the water was undergoing a state change which means that it's original properties are preserved
Light bulb -it produces heat and light
toaster - it produces heat and the metal strips glow producing light