Explanation:
As you know, the conjugate base of an acid is determined by looking at the compound that's left behind after the acid donates one of its acidic hydrogen atoms.
The compound to which the acid donates a proton acts as a base. The conjugate base of the acid will be the compound that reforms the acid by accepting a proton.
In this case, sulfurous acid has two protons to donate. However, the conjugate base of sulfurous acid will be the compound left behind after the first hydrogen ion is donated.
1. Fact: A dead organism is still an organic being.
Evidence: Non-living things differentiate from living beings due to differences in organic and non-organic chemical compounds. On top of this, non-living things were never alive in the first place.
2. Fact: The Linnaeus system, although still recognized as the perfect class system, has changed.
Evidence: Initially, Kingdom was the highest class in the system; however, later on, scientists introduced a class above this- the Domain.
3. Fact: The tiger and goldfish are not closely related.
Evidence: Although all living things share common ancestors from billions of years ago, they branched off and continued to do so since then. The only relation these two organisms share is distant DNA patterns.
4. An organism's kingdom is no longer only based on physical appearance.
Evidence: Although before the rise of genetics and evolutionary sciences this may have been the case, it isn't anymore. We now have the ability to analyze DNA, as well as actually pick apart what makes the organism what it is.
5. Mammals are indeed in the same domain as plants.
Evidence: All plants, fungi, protists, and animals posses eukaryotic cells; therefore placing them in the same domain.
the pH of an aqueous solution with [paba] = 0. 030 m and ka = 2. 2 × 10⁻⁵
<h3>What is pH ?</h3>
pH is a measure of how acidic/basic water is.
The range goes from 0 - 14, with 7 being neutral.
pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
H₂NC₆H₄COOH ----> H₂NC₆H₄COO⁻ + H⁺
0.030M 0 0
0.030-x x x
= x² / 0.030-x
x = 8.01 * 10⁻⁴
[H⁺] = x = 8.01 * 10⁻⁴
pH = -log[ H⁺]
=-log[ 8.01 * 10⁻⁴]
pH = 3.09
Therefore the pH of an aqueous solution with [paba] = 0. 030 m and ka = 2. 2 × 10⁻⁵
Answer:
A lot of people rejected it outright. Christians were persecuted and killed for their beliefs, and there were no cars, etc for easy transportation. Most people had to walk everywhere since horses and the like were only for the rich and royal. Hope this helps, please give me brainliest :)
Explanation:
Hund's Rule<span>. </span>Hund's rule<span>: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin. so D. is the answer</span>