Answer:
chemical safety goggles do not have lens.
Explanation:
We use lenses to make a clear picture of anything.
They may be used to magnify an object.
Lens can be used in microscope to magnify the image of a microscopic object.
Telescope is used to see far objects, clearly.
Magnifying glass is a simple lens used for magnifying the image of any small ojbect or image or letter.
However chemical safety glasses uses simple glass.
Answer:
The de-exitation of electron to its lower energy level cause the emission spectrum of an element.
Explanation:
The electron is jumped into higher level and back into lower level by absorbing and releasing the energy.
The process is called excitation and de-excitation.
Excitation:
When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits. For example if electron jumped from K to L it must absorbed the energy which is equal the energy difference of these two level. The excited electron thus move back to lower energy level which is K by releasing the energy because electron can not stay longer in higher energy level and comes to ground state.
De-excitation:
When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. This energy is exactly equal to the energy difference between the orbits. These radiations gives the emission spectrum of that element. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.
The atomic emission spectrum of an element is produced by the energy released when an electron transitions from a higher to a lower energy level. This energy is emitted as light, creating a unique spectrum that can be used to identify the element.
The atomic emission spectrum of an element is caused by the energy released when an electron in an atom moves from a higher energy level to a lower energy level. When an atom absorbs energy, it moves its orbiting electrons to a higher energy level. However, these electrons cannot maintain this high energy state for long, forcing them to transition back to their original or lower energy level. The energy they release during this transition is emitted in the form of light, creating a unique emission spectrum.
For example, hydrogen has a characteristic series of emission lines in its spectrum (Balmer series) because the electrons in a hydrogen atom can occupy specific energy levels. When these electrons drop from a higher energy level to a lower one, they emit light of specific wavelengths, creating the unique atomic emission spectrum of hydrogen.
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A substance with a pH of 6 is considered slightly acidic. The pH scale, which measures the concentration of hydrogen ions, ranges from 0 to 14 where a pH of 7 is neutral. A substance with a pH below 7 is acidic, while a substance with a pH above 7 is considered basic or alkaline.
A substance with a pH of 6 is often considered slightly acidic. The pH scale measures the concentration of hydrogen ions (H+) in a substance and ranges from 0 to 14 where a pH of 7 is considered neutral. Anything below 7 indicates an acidic solution, and anything above 7 is considered basic or alkaline. So, a substance with a pH of 6 is closer to the neutral point, but is still acidic as it falls below 7. Since one unit on the pH scale represents a decrease in hydrogen ion concentration by a factor of 10, a solution with a pH of 6 is 10 times less acidic than one with a pH of 5, but 10 times more acidic than a neutral solution at pH 7.
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Answer:
i don’t understand what you are saying?
Explanation:
Answer:
O-16 isotope is most likely to have the greatest abundance in nature.
Explanation:
Atomic mass of an isotopes of oxygen elements:
Average atomic mass of an oxygen atom = 15.994 amu
Isotope with the value of atomic mass closest to the average atomic mass of the oxygen atom will have the greatest abundance in nature. As it will be found in much more greater extent in nature.
Where as isotope which is least close to the average atomic mass will have less abundance in nature.
O-16 isotope is most likely to have the greatest abundance in nature.
15.995 amu ≈ 15.994 amu
Explanation:
In chemistry, internodes refer to the points in the structure of a molecule or molecular chain where carbon atoms are located. Internodes are carbon atoms that are directly connected by a single bond. These carbon atoms are often called "C" followed by a number indicating their position in the chain. Carbon atoms that are not internodes are called "terminal carbons" and are bonded to other atoms or chemical groups. The structure of internodes and terminal carbons is important for understanding the geometry and reactivity of organic molecules.