Hydrogen ions H +(aq) (from the water) are discharged at the negative electrode as hydrogen gas, H 2(g)
Answer:
Higher
Explanation:
When an object sublimates, it goes straight from the solid to the gas phase. Since this involves heating up, the object's molecules move faster, which therefore gives it higher kinetic energy. Hope this helps!
Answer:
moles O₂ needed = 0.19 mole
Explanation:
4Fe(s) + 3O₂(g) => 2Fe₂O₃(s)
1.396g Fe(s) = 1.396g/56g/mol = 0.025 mole Fe(s)
0.025 mole Fe(s) reacts with 3/4(0.025 mole O₂(g) = 0.019 mole O₂(g)
It is not used up in a reaction. This is because a catalyst is added to a reaction in order to speed it up, but only for that—it doesn’t react with anything, so it isn’t a product nor reactant of any reaction
so:
so:
it means that
in
of acid there is
moles of acid
so:
it means that:
in
of water there is
moles of water
therefore:
So your answers are:
and the mole fraction is: