In this experiment, you will use universal indicator to qualitatively measure ph. The universal indicator in this experiment is
1 answer:
The true statements is that the color of the indicator relates to the hydrogen ion concentration of the solution.
<h3>What does the color change tell you about the pH?</h3>If a solution is acidic or basic, it can be measured using the pH scale. The universal indicator is said to be added into a specific solution, the color change therefore shows the estimate of the pH of the solution.
An Acid often makes universal indicator solution to change from green toward red and their solution's pH is one that is below 7 on the pH scale.
Note that pH indicators are said to be weak acids and they show the concentration of H+ (H3O+) ions in a solution through color change.
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Select all of the following statements that are true about the universal indicator used in this experiment
The color of the indicator relates to the hydrogen ion concentration of the solution.
At pH 7 the indicator will be colorless.
The universal indicator (or parts thereof) are in equilibrium and have an associated K value.
The color of the indicator relates to the neutral ion concentration in solution.
The universal indicator is a single chemical compound.
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Answer: 3/8 of the class went to the evening session.
Explanation:
So it says on Sunday 3/4 of an 8th grade class went to see the movie.But we do not know the real population of the 8th grade class. But is says that out of the 3/4 of the students that went to the movie have of them went in the afternoon so we will multiply 1/2 by 3/4 to find out how many people went to the afternoon session.
3/4 * 1/2 = 3/8 So we know that 3/8 of the 3/4 of the class went in the afternoon so we will now subtract 3/8 from 3/4 to find out what fraction went in the evening.
=
To think about it if half of the 3/4 of the class went in the afternoon then another have will go in the evening.
Homology is simply known to be similar as a result of shared ancestry. The type of evidence for the theory of evolution is homologous structures.
- There are two types of homologous structures. They are phylogenetic/evolutionary between species and serial/iterative or homonomy that takes place within individuals.
A good example of homologous structures are the limbs of humans, cats, whales etc. These structures are due to divergent evolution.
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