Answer:
NaCl is neither a salt nor a base.
Explanation:
It is a salt
The Ampere (A). You could literally google to be more efficient, all the same to me tho
Mechanical weathering is actually breaking down of rocks into smaller pieces by natural forces. Any weathering processes that can cause the physical breakdown of rocks without any type of change in the chemical composition of rocks, called mechanical weathering.
So, looking at each of the definitions in the options, we can easily choose:
1. Hydration : It's a process of absorbing water by substance.
2. Carbonation: It's a process of Carbon Dioxide dissolving in liquid (mostly water).
3. Oxidation : It's a process of oxygen reacting with some element.
4. <span>Exfoliation: It's a process where the rocks erodes by peeling off in sheets or layer by layer rather than grain by grain.
As you can see the last one </span><span>Exfoliation matches with the definition of mechanical weathering. It's one of its types.</span>
Answer:
2.23 × 10^6 g of F- must be added to the cylindrical reservoir in order to obtain a drinking water with a concentration of 0.8ppm of F-
Explanation:
Here are the steps of how to arrive at the answer:
The volume of a cylinder = ((pi)D²/4) × H
Where D = diameter of the cylindrical reservoir = 2.02 × 10^2m
H = Height of the reservoir = 87.32m
Therefore volume of cylindrical reservoir = (3.142×202²/4)m² × 87.32m = 2798740.647m³
1ppm = 1g/m³
0.8ppm = 0.8 × 1g/m³
= 0.8g/m³
Therefore to obtain drinking water of concentration 0.8g/m³ in a reservoir of volume 2798740.647m³, F- of mass = 0.8g/m³ × 2798740.647m³ = 2.23 × 10^6 g must be added to the tank.
Thank you for reading.
