Answer:
Energy levels tell us how many <u>electrons </u>there are in an atom.
Hope this helps!
Answer:
1. Magnesium + Oxygen --> Magnesium oxide
2.Iron + Oxygen --> Iron oxide
3.Copper + Oxygen --> Copper oxide
Explanation:
When an Element such as Magnesium or any other Elements are reacted eith Oxygen it forms an Oxide.
If you ever need the symbol equation here it is too :
1. Mg + O --> MgO
2.Fe + O --> FeO
3.Cu + O--> CuO
Answer:
yes it was true ang it's in the book of mythology
Answer is: <span>b.20.0 L </span><span>liters of ammonia are needed to react completely.
</span>V(NO) = 30 L.
n(NO) = V(NO) ÷ Vm.
n(NO) = 30 L ÷ 22,4 L/mol.
n(NO) = 1,34 mol.
From chemical reaction: n(NO) : n(NH₃) = 6 : 4 (3 : 2).
n(NH₃) = 4 · 1,34 mol ÷ 6.
n(NH₃) = 0,892 mol.
V(NH₃) = 0,892 mol · 22,4 L/mol.
V(NH₃) = 20 L.
