To accurately answer how many amino acids were changed, it's essential to clarify the context in which the question is asked, as there are numerous situations where amino acids can be altered. For example, in the study of genetic mutations, amino acid changes can occur through substitutions in an organism's DNA sequence. Such changes can lead to the alteration of a protein's structure and function, potentially causing diseases or contributing to evolutionary adaptations. Additionally, in protein engineering and design, scientists intentionally change amino acids in a protein's sequence to alter its properties or improve its function for various applications, including therapeutics and industrial processes. The exact number of amino acids changed can be determined by comparing the amino acid sequence before and after the mutation or engineering process.

Titanium, with the symbol Ti, is a chemical element that lays in the fourth group of the periodic table and has an atomic number of 22. This atomic number is crucial because it tells us the number of protons found in the nucleus of an atom of titanium. Since atoms are electrically neutral under standard conditions, the number of electrons equals the number of protons. Therefore, a titanium atom has 22 electrons. These electrons are arranged in shells around the nucleus, following the electron configuration of [Ar] 3d^2 4s^2. The presence of these electrons plays a significant role in titanium's chemical properties, including its renowned strength, corrosion resistance, and ability to alloy with other metals. Titanium's electron configuration makes it an important element in various industrial applications, such as in aerospace, medical devices, and even jewelry. Understanding the electron structure is essential for comprehending how titanium interacts with other elements, its reactivity, and its uses in technology and materials science.

Titanium, with the symbol Ti, is a chemical element that lays in the fourth group of the periodic table and has an atomic number of 22. This atomic number is crucial because it tells us the number of protons found in the nucleus of an atom of titanium. Since atoms are electrically neutral under standard conditions, the number of electrons equals the number of protons. Therefore, a titanium atom has 22 electrons. These electrons are arranged in shells around the nucleus, following the electron configuration of [Ar] 3d^2 4s^2. The presence of these electrons plays a significant role in titanium's chemical properties, including its renowned strength, corrosion resistance, and ability to alloy with other metals. Titanium's electron configuration makes it an important element in various industrial applications, such as in aerospace, medical devices, and even jewelry. Understanding the electron structure is essential for comprehending how titanium interacts with other elements, its reactivity, and its uses in technology and materials science.

There are 22 electrons in titanium.

Diesel fuel does not typically degrade or "eat" PVC (polyvinyl chloride) pipe or containers. PVC is a thermoplastic polymer that is widely used in construction and industrial applications due to its durability and resistance to chemicals, including many fuels. However, prolonged exposure to diesel might cause slight swelling or softening of the PVC surface, but this effect is generally minimal and would not result in significant damage. In some cases, diesel might interact with lower-quality or thinner PVC materials more noticeably. Nonetheless, for most practical purposes, storing diesel in or running it through PVC piping will not cause any significant issues. It's always recommended to use appropriate materials designed for fuel handling, such as HDPE (high-density polyethylene) or metal containers/pipes, especially when dealing with large volumes or long-term storage.