Reactivity; is the chemical property that describes the likelihood and a rate at which a substance undergoes a chemical change or a chemical reaction. A chemical change is the process by which a substance becomes a new and different substance. A chemical reaction occurs when a substance undergoes chemical changes to form a new substance.
Answer:
Option D. 3 ppm isopropanol.
Explanation:
From the question given above, the following data were obtained:
Mass of isopropanol = 6 mg
Mass of water = 2 Kg
Isopropanol concentration =?
Concentration = mass isopropanol / mass of water
Isopropanol concentration = 6 mg / 2 kg
Isopropanol concentration = 3 mg/Kg
Next, we shall convert 3 mg/Kg to ppm. This can be obtained as follow:
Recall:
1 mg/Kg = 1 ppm
Therefore,
3 mg/Kg = 3 ppm
Thus, the isopropanol concentration is 3 ppm.
Answer:
HCL and CaCl2
Explanation:
Since calcium hydroxide is a base, then it needs an acid to neutralise it.
HCL is an acid, it can neutralize calcium hydroxide through reacting the two together.
The resultant salt shall be calcium chloride ( CaCl2 )
Reaction of calcium hydroxide and HCl results into Ca(OH)Cl, CaCl2,
Where Ca(OH)Cl is an aqueous solution and calcium chloride is a base.
Hope the answer helps out.
