A homogenous non crystalline substance consisting of large molecules
Answer:
Surface mining
Explanation:
The method covered in the question above is called Surface mining.
Surface mining refers to the practice of extracting ores that are in the soil at medium and shallow depths, that is, they are close to the surface. This type of extraction of ores, exploits the mineral deposits until it causes its depletion, creating small depressions in the land that can be used to create landfills. The main ores found in this type of extraction are: limestone, clay, marble, coal, plaster, among others.
<span>The southernmost province of the country that occupies approximately one-sixth of the Iberian Peninsula is the province of Algarve in Portugal. The Algarve, with its capital Faro, is the region that is most visited in Portugal. It is also well-known for its Mediterranean golf resorts and beaches.</span>
Should've put this in mathematics, you know? But don't worry, mistakes happen!
Though, in order to do this problem, we need to add 20 for the total gallon.
Let's use X for a placeholder to determine the amount, as the gallon of 25% alcohol and percentages can be in decimal forms. It'd be 0.25x gallons worth of alcohol afterwards. We then add 20-x gallons to 5% of alcohol, which is 0.05(20-x).
This would then allow us to find the sum of 20 gallons to 20% of alcohol, containing at least 0.2(20) gallons of the alcohol.
We'd then be able to develop this equation;
0.25x + 0.05(20-x) = 0.2(20).
And then so on the sequence continues...
0.25x + 1 - 0.05x = 4
0.2x = 3
x = 3/0.2
We'd then be able to come to a conclusion that;
1. X equals 15 gallons of 25% alcohol
2. 20-x equals 5 gallons of 5% alcohol.
