<span>If all chemical reactions that release free energy tend to occur spontaneously,why haven't all such reactions already occurred? One reason is that most reactions require an input of energy to get started.Before it is possible to form new chemical bonds,even bonds that contain less energy,it is first necessary to break the existing bonds,and that takes energy.The extra energy required to destabilize existing chemical bonds and initiate a chemical reaction is called activation energy.</span>
The simplest Organic compounds are made up of only Carbon and Hydrogenatoms only. Compounds of Carbon andHydrogen only are called Hydrocarbons. The simplest Hydrocarbon is methane, CH4.
10%.
Less energy goes to the consumer, as most of the energy was spread out.
Answer:
In order for scientists to know how old a fossil is they use the process of fossil dating of relative dating. The most common method of dating is the Uranium-lead dating. There are multiple minerals used for uranium-lead dating, the most common/preferred is Zircon. The mineral zircon is ideal because:
- Zircon is a hard mineral, this makes it impervious to weathering.
- It is resistant to chemical and mechanical weathering, and metamorphism
Explanation:
One, because of the octet rule, every element wants to be like the noble gases, have a full shell, which is 8 electrons.
