1-A
2-D
Activation energy is the minimum amount of energy needed for a reaction to happen.
At STP for any gas, 22.4 liters = 1 mole.
78.4 L * 1mole/22.4L = 3.50 moles
Answer:
1- Environmental Value System or EVS is a worldview that molds the way both individuals and the societies they form perceive and therefore evaluate environmental concerns.
2-Entropy/ the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work.
3-Equilibrium/a state of balance between opposing forces or actions that is either static
4-Feedback/a return of information about a result or the returned portion of a process.
5-Feedback,negative/ is a self-regulatory system in which it feeds back to the input a part of a system's output so as to reverse the direction of change of the output.
6-Feedback,positive/ is the amplification of a body's response to a stimulus.
7-Gaia/ all organisms and their inorganic surroundings on Earth are closely integrated to form a single and self-regulating complex system
8-Model/a physical and/or mathematical and/or conceptual representation of a system of ideas, events or processes.
Non-polar Covalent bonding is the type of bonding that takes place when two atoms share a pair of electrons with each other. In order to form a molecule, these two electrons are glued to one or more atoms. One important contribution of non-covalent bonding is the oxygen we breathe. On the other hand, polar covalent bonding happens when a pair of electrons are being shared unequally because one of the atoms spends way too much time with another electrons rather than with the atoms.
The principal quantum number, <span>nn</span>, designates the principal electron shell. Because n describes the most probable distance of the electrons from the nucleus, the larger the number n is, the farther the electron is from the nucleus, the larger the size of the orbital, and the larger the atom is. n can be any positive integer starting at 1, as <span><span>n=1</span><span>n=1</span></span> designates the first principal shell (the innermost shell). The first principal shell is also called the ground state, or lowest energy state. This explains why <span>nn</span> can not be 0 or any negative integer, because there exists no atoms with zero or a negative amount of energy levels/principal shells. When an electron is in an excited state or it gains energy, it may jump to the second principle shell, where <span><span>n=2</span><span>n=2</span></span>. This is called absorption because the electron is "absorbing" photons, or energy. Known as emission, electrons can also "emit" energy as they jump to lower principle shells, where n decreases by whole numbers. As the energy of the electron increases, so does the principal quantum number, e.g., n = 3 indicates the third principal shell, n = 4 indicates the fourth principal shell, and so on.