D) physical and chemical changes
Answer:
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ZnO
is the answer for what is the chemical formula for zinc?
First we calculate the concentration of HCl:
Moles = mass / Mr
= 25 / 36.5
= 0.685 mol
Concentration = 0.685/1.5 = 0.457 mol / dm³
For a strong monoprotic acid, the concentration of hydrogen ions is equal to the acid concentration.
pH = -log[H+]
pH = -log(0.457)
= 0.34
The term that refers to compounds that can form hydrates but do not contain water molecules is anhydrous.
