Answer:
option C = all elements are balanced
Explanation:
In given chemical equation all elements are balanced.
Chemical equation:
MgO + 2LiCl → MgCl₂ + Li₂O
This is balanced chemical equation. We can see that there are one Mg atom and one oxygen atom is present in reactant side and also in product side. So, both are balanced.
In case of lithium there are two Li atoms in reactant side and also in product side , it is also balanced.
There are two chlorine atoms are present in reactant side and also in product side. Chlorine atoms are balanced.
The answer is neutrons and protons.
Hope you got it!!
pH=6.98
Explanation:
This is a very interesting question because it tests your understanding of what it means to have a dynamic equilibrium going on in solution.
As you know, pure water undergoes self-ionization to form hydronium ions, H3O+, and hydroxide anions, OH−.
2H2O(l]⇌H3O+(aq]+OH−(aq]→ very important!
At room temperature, the value of water's ionization constant, KW, is equal to 10−14. This means that you have
KW=[H3O+]⋅[OH−]=10−14
Since the concentrations of hydronium and hydroxide ions are equal for pure water, you will have
[H3O+]=√10−14=10−7M
The pH of pure water will thus be
pH=−log([H3O+])
pH=−log(10−7)=7
Now, let's assume that you're working with a 1.0-L solution of pure water and you add some 10
