Answer:
pH = 13.7.
Explanation:
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In this case, as we set up the chemical reaction between nitric acid and sodium hydroxide:
It is possible to realize there is a 1:1 mole ratio of acid to base, thus, we next compute the moles of each one:
In such a way, since the base react with more moles, there is leftover that we compute as shown below:
Afterwards, we compute the concentration given the new volume of 500 mL (0.500 L), as both volumes are added up:
Now, since sodium hydroxide is such a strong base, we compute the pOH first:
And the pH:
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The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical "reactions," no reaction is actually occurring.
If heat flows into the surroundings, the random motions of the molecules in the surroundings increase. Thus, the entropy of the surroundings increases. The second law of thermodynamics states that the total entropy of the universe always increases for a spontaneous process.
Cellular respiration.
I think because it’s the opposite of photosynthesis which uses carbon dioxide and water to create organic molecules (glucose)
The answer is 80 atomic mass