Answer:
Name Molecular Formula Structural Formula
ethane C2H6 CH3CH3
propane C3H8 CH3CH2CH3
butane C4H10 CH3CH2CH2CH3
pentane C5H12 CH3(CH2)3CH
When an atom has an equal number of electrons and protons it has an equal number of negative charge (the electrons) and positive electric charges (the protons). The total electric charge of the atomic is therefore zero
Answer:
[Ar]4s²
Explanation:
The electronic configuration of calcium is given as follows;
1s²2s²2p⁶3s²3p⁶4s²
The electronic configuration of argon, Ar is 1s²2s²2p⁶3s²3p⁶
Given, that there is a similarity be tween the electronic configuration of all the shells of the an atoms of argon and an atom calcium, except for the added valence shell electrons in calcium, the electronic configuration of calcium can be represented by the symbol of an atom of argon, followed by the electonic configuration of the valence shell as follows
The electronic configuration of calcium with argon as base = [Ar]4s².
For the reaction c2h6 (g) → c2h4 (g) + h2 (g) δh° is 137 kj/mol and δs° is 120 j/k ∙ mol. the reaction is spontaneous at high temperatures. the correct answer is option(b).
A spontaneous reaction is one that favors the creation of products in the environment in which it is taking place. A campfire that is roaring is an exothermic example of a spontaneous reaction (there is a decrease in the energy of the system as energy is released to the surroundings as heat).
There are some reactions that are only spontaneous at very high temperatures according to the Gibbs Free Energy equation. The reaction is spontaneous at high temperatures if both S, or entropy, and H, or enthalpy, are positive. We want the Gibbs free energy to be negative according to the formula G = H - T - S.
The complete question is:
For the reaction
C2H6 (g) → C2H4 (g) + H2 (g)
ΔH° is +137 kJ/mol and ΔS° is +120 J/K ∙ mol. This reaction is ________.
A) spontaneous at all temperatures
B) spontaneous only at high temperature
C) spontaneous only at low temperature
D) nonspontaneous at all temperatures
To know more about spontaneous reaction refer to: brainly.com/question/1217654
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