Answer: C
Explanation:
C just because the other choices dont really make sense. They use these fibers as a way to see what clothes, shoe strings, carpets, etc was there it help identify a person at the scene. Hope this helps!!
<h2>Enthalpy Difference</h2>
Explanation:
- The 2nd Law of Thermodynamics states that when energy is converted from one form to another, some is always lost due to difference in the enthalpy of the system, which always increases.
- Enthalpy may be defined as the amount of energy that is stored.
- During a chemical reaction, the system will absorb or gives out energy in the form of heat and light.
- The change in energy during a chemical reaction is due to the difference in the energy amount of reacting species and species that are formed.
The answer in this question is FALSE. Hydrogen atom has electronic configuration 1s^1. It needs only one more electron to make a closed sub-shell. Therefore, a stable hydrogen atom does not have an octet but a duplet. Therefore, the statement is false.
Answer:
It is used to represent whole numbers
Explanation:
Answer:
Answer - D (looking through a pieacef glass)
Explanation:
The light ray appears to bend as it passes through the surface of the glass. This 'bending of a ray of light' when it passes from one substance into another substance is called refraction. The bending of a ray of light also occurs when the ray comes out of glass or water and passes into the air.