Answer:
the other number is different
Explanation:
That makes the Earth, the Sun, and the rest of the solar system
<span>something like 23 thousand times as old as the human species !
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From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.
<h3>Why is color a protection mechanism?</h3>
This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.
Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.
To learn more about plants visit:
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Answer:
True
Explanation:
It's true because the pH is a measure of how basic or acid a solution is. In an acidic medium, the pH scales goes from 0 to 7. While in a basic medium goes from 7 to 14. The lower the pH value of the most acid the solution is.
1. The expression pH = -log(molar concentration of hydronium) allow to calculate the pH of a solution.
2. On the other hand, the expression pOH = -log(molar concentration of hydroxide) allow to determine the pOH of a solution.
The values of pH and pOH always obey the following expression:
pH + pOH = 14
Thus if for instance the pH becomes smaller the pOH must become bigger in order to fulfill the equation. Which means that the concentration of hydronium ions is greater than the hydroxide concentration.
For example, in an acidic medium:
if pH= 3, pOH= 11
In this case the molar concentration of hydronium is 0,001M. And the molar concentration of hydroxide ions is just 0,00000000001M.
Substitution reaction<span> (also known as single displacement </span>reaction<span> or single </span>substitution reaction) <span>is a </span>chemical change throughout that one useful cluster in an exceedingly substance<span> is replaced by another </span>useful cluster<span>.
</span>The best example<span> of a </span>substitution reaction<span> is halogenation.
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Organic compounds react at a slower rate and manufacture far more complicated<span> set of </span>product<span> than inorganic compounds.</span>
