Answer:
Titrations. Because a noticeable pH change occurs near the equivalence point of acid-base titrations, an indicator can be used to signal the end of a titration. When selecting an indicator for acid-base titrations, choose an indicator whose pH range falls within the pH change of the reaction.
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Answer:
Carbon dioxide as well as water are needed for photosynthesis.
Explanation:
There are 4 significant digits: 3405.
