Answer:
by pumping blood throughout the body.
Explanation:
Carbon-Oxygen
We breathe in oxygen, we breathe out carbon dioxide.
Answer:
Radiation therapy is the use of high energy radiation to kill cancer cells.
When fireworks go off, they produce smoke, which is evidence of a new substance being created.
At the equivalence point, the NaF completely reacts with the HCl
The correct option that gives the equivalence point when titrating NaF solution with HCl(aq), occur at a pH value is option c);
c) <u>Below 7 because it is determined by HF (aq)</u>
Reason:
The ionic equation of the reaction taking place in the titration is presented as follows;
- Na⁺ (aq) + F⁻ (aq) + H⁺ (aq) + Cl⁻(aq) → HF (aq)+ Na⁺(aq) + Cl⁻(aq)
Therefore, by removing the spectator ions, we get;
Therefore;
The net ionic equation is the formation of hydrofluoric acid, HF, which is a
weak acid, therefore, the pH value will be <u>below 7 because it is determined </u>
<u>by HF</u>
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Learn more about equivalence point here: titration
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