metals tend to form cations
nonmetals tend to form anions
this is because metals lose electrons,
and nonmetals gain electrons
Answer: 3.5 moles
Explanation:
For every 2 moles of sulfur consumed, there are 3 moles of oxygen consumed.
This means that sulfur is the limiting reactant, meaning that 2(3)=6 moles of oxygen will be consumed.
Thus, 9.5-6=3.5 moles of oxygen will remain.
Answer:
it is not clear
but I think you are mean a oxidation state for element or compound ( molecule )
like -4 in [Cr(CO)4]4−
According to Arrhenius definition of acid bases: An acid donates ions in aqueous solution and a base donates hydroxide ions in aqueous solution.
So the given statement that a substance that forms hydroxide ions in aquoeus solution is true.
Example of a base giving hydroxide ions in water: