Answer:
C. Hydrogen Ions.
Explanation:
The pH level of soils is measured based upon the acidity or basicity level in the soil. The pH scale usually measures between 0-14. 7 is the neutral pH level of soil and a pH level below 7 is considered acidic and above 7 is alkaline.
So, soil with a high amount of hydrogen ions (H+) will be considered acidic. As the amount of hydrogen ions increases in the soil, the pH level of the soil decreases, making it acidic.
Therefore, option C is correct.
Answer:
40 mL
Explanation:
V2=P1V1/P2
You can check this by knowing that P and V at constant T have an inverse relationship. Hence, this is correct.
<span>I was correct... 1 is adding more reactant molecules and 2 was decreasing in ch3br concentration over time </span>
Evaporation is a physical change. You can tell by the fact that when somthing evaporates, its chemical identity does not change. The only thing that changed is its physical properties.
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