Three resonance structures of the given anion are possible. One is given, but it is incomplete. Complete the given structure by adding nonbonding electrons and formal charges. Draw the two remaining resonance structures (in any order), including nonbonding electrons and formal charges. Omit curved arrows.
Answers
Answer:
Explanation:
The missing incomplete resonance structure is attached in the image below. From there, we can see the addition of the nonbonding electrons and its' formal charge which makes the resonance structure a complete resonance structure. The others two resonance structure that can be derived from the complete structure is also shown in the image. Out of these three structures, the structure that contributes most to the hybrid is the structure with the negative charge on the oxygen.
Final answer:
To complete the provided resonance structure, add nonbonding electrons and formal charges. Then, draw the two remaining resonance structures by distributing the nonbonding electrons and formal charges differently.
Explanation:
When completing the provided incomplete structure of the anion, you need to add nonbonding electrons and formal charges to make it accurate. Then, draw the two remaining resonance structures by distributing the nonbonding electrons and formal charges differently. To illustrate, let's consider the example of a nitrate ion (NO3-). The complete structure of the provided resonance form would have a double bond between the central nitrogen atom and one of the oxygen atoms, with two lone pairs on the nitrogen atom. The remaining two resonance structures would have different double bond oxygen-nitrogen combinations.
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Answers
Answer: See attachment.
Explanation:
Exceptions to the octet rule fall into three categories:
- An incomplete octet.
- An odd number of electrons.
- More than eight valence electrons around the central atom.
In addition to the 3s and 3p orbitals, xenon also has 3d orbitals that can be used in bonding. These orbitals enable xenon to form an expanded octet.
Answers
Answer:tell the instructor of the lab
Explanation:
Answers
Answer: The inital pressure of the gas is 11.9 atm
Explanation:
To calculate the initial pressure, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.
The equation given by this law is:
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
Putting values in above equation, we get:
Thus inital pressure of the gas is 11.9 atm
Answers
Answer:
Ca₃(AsO₃)₂
Explanation:
Sodium arsenite, with the chemical formula Na₃AsO₃, is formed by the cation Na⁺ and the anion AsO₃³⁻. For the molecule to be neutral, 3 cations Na⁺ and 1 anion AsO₃³⁻ are required.
Calcium arsenite would be formed by the cation Ca²⁺ and the anion AsO₃³⁻. For the molecule to be neutral, we require 3 cations Ca²⁺ and 2 anions AsO₃³⁻. The resulting chemical formula is Ca₃(AsO₃)₂.
Answers
Answer:
Explanation:
Fossil fuels are fuels that are formed by naturally processes leading to the formation of crude oil, coal and natural gas.
Scientists and engineers have used the energy from these fossil fuels to benefit the society by converting these fuels into consumable products for engines which are used for various daily life routine, such as transport (as in the case of the combustible engines in cars, trains, airplanes and ships), power generation (as in the case of gas turbines for power generation, petroleum or diesel for the engines of power generators) and even for home use in food processing (as in the case of cooking gas).
The chemical reaction mostly involved in this process especially in the case of engines is combustion reaction. Combustion reaction is an exothermic reaction in which an organic substance is burnt in excess oxygen to produce carbon dioxide. The energy conserved in this reaction (combustion reaction) is from stored potential energy (in the form of chemical energy) to thermal energy (which is the heat released when the hydrocarbon is burnt).
As mentioned earlier, one of the methods of using fossil fuels for energy is it's use in power generation by power generating sets (generators) and gas turbines. One advantage of using fossil fuel products for power generation is that it is cheaper than it's alternatives (such as solar power generation). However, one disadvantage of using fossil fuel products for power generation is that they release toxic gases/chemicals (such as carbon monoxide, CO, nitrogen oxides, NO and NO₂) into the atmosphere.
Final answer:
The energy in fossil fuels is harnessed and used mostly through the process of combustion which provides a high energy output but contributes negatively to the environment by increasing carbon dioxide levels.
Explanation:
Scientists and engineers harness and use energy in fossil fuels like coal, petroleum, and natural gas to benefit society in a number of ways, primarily through combustion. The combustion process is a chemical reaction whereby energy is released by burning these fuels amidst oxygen. This results in heat and energy, which is then converted to electricity and used for transportation, industrial production, and home heating purposes.
A common method is to burn these fuels, which in turn powers steam-driven turbines to produce electricity. The energy from the combustion of the fuels is transferred into mechanical work which is then converted into electrical energy. This process points to the principal of energy conservation which states that energy is neither created nor destroyed, but merely transformed from one form to another.
This method, however, has its pros and cons. On the positive side, fossil fuels are comparatively easy to extract, abundant, and provide a high energy output. But on the flip side, burning fossil fuels leads to environmental degradation by releasing carbon dioxide and contributing to global warming. Also, these fuels are non-renewable, and the resources are limited.
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Answers
Answer:
Explanation:
There are 2.