Answer:
Hydrogen concentration = 7.94×10^-3 M
Explanation:
from potenz Hydrogen ( pH ) definition
pH = -log[H+]
2.1 = -log[H+]
2.1/-log = -log[H+]/-log
10^-2.1 = [H+]
[H+] = 7.94×10^-3M
Answer:
the process by which plants make their food by there own with the help of sunlight and water is known as photosynthesis
Answer:
last one is your answer.....
Answer:
The filter selectively transmits the red and blue portions of the incident white light spectrum, but absorbs most of the green wavelengths.
Explanation:
hope it's helpful to you
Explanation:
When two or more substances are mixed together in such a way that their particles are evenly distributed throughout the mixture then it is known as a solution.
Basically, a solution is a homogeneous mixture which can be present in any phase.
A solution contains both solute and solvent.
A colloid is defined as a substance in which solute particles are microscopically distributed throughout the solvent. In a colloid both solvent and solute are present in liquid phase.
Hence, a solution can be easily distinguished from colloids.
Therefore, we can conclude that following statements about solutions are true:
- They contain solutes and solvents.
- Their particles must be evenly distributed.
- They may contain solid, liquid, and gas simultaneously.
- They are always easy to distinguish from colloids.
- They are homogeneous matter.
