Answer:
has Two oxygen atoms
Explanation:
Oxygen is a diatomic element hence exists as O2 for majority of its existence in our atmosphere. Although small portion does exist in form of O3 which protects earth from sun's harmful ray, the majority portion of oxygen has O2 which is the oxygen we breathe.
A special type of combination is combustion. One of the key reactants in a combustion reaction must always involve an oxygen. This is the defining characteristic of combustion. When a combustible matter is burned, it reacts with the oxygen in air in the presence of heat. Moreover, one of its end products must be water. Let's take glucose as our example of a hydrocarbon.
C6H12O6(s) + 6O2(g) -----> 6CO2 (g) + H2O(g)
Therefore, when a solid glucose interacts with oxygen gas, it yields carbon dioxide and water vapor.
A lack of swage structures in overcrowded cities will lead to poor public health, the less structures to hold the mass of peoples sewage will have bacteria in the air causing bacterial infections. <span />
Valence electrons are the electrons in the outermost shell of an element on the periodic table. Atoms want to be able to have a full outer shell and they can share or trade electrons in order to achieve this. Valence electrons are also super super important in chemical reactions. The number of valence electrons determines what group that specific atom or element is in on the periodic table. This affects the reactivity of the element.
Answer:
Could be either spontaneous or nonspontaneous depending on the temperature
Explanation:
For a reaction to be spontaneous, Gibbs free energy must be negative.
The relation between enthalpy, entropy and temperature is as follows:
ΔG is change Gibbs free energy, ΔH is change in enthalpy, ΔS is change in entropy and T is temperature.
In the given condition, ΔH is negative and ΔS is negative. As ΔS is also negative then ΔG cannot be negative at all temperature (Particulary at high temperature) and thus, reaction could be nonspontaneous.
Therefore, in the given the reaction, could be either spontaneous or nonspontaneous depending on the temperature.
