Consider the following unbalanced equation for the combustion of hexane: αC6H14(g)+βO2(g)→γCO2(g)+δH2O(g) Part A Balance the equation. Give your answer as an ordered set of numbers α, β, γ, ... Use the least possible integers for the coefficients. α α , β, γ, δ = nothing Request Answer Part B Determine how many moles of O2 are required to react completely with 5.6 moles C6H14. Express your answer using two significant figures. n n = nothing mol Request Answer Provide Feedback
Answers
Answer:
2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O
α =2
β = 19
γ = 12
δ = 14
53.2moles of O₂
Explanation:
Proper equation of the reaction:
αC₆H₁₄ + βO₂ → γCO₂ + δH₂O
This is a combustion reaction for a hydrocarbon. For the combustion of a hydrocarbon, the combustion equation is given below:
CₓHₙ + (x + )O₂ → xCO₂ +
H₂O
From the given combustion equation, x = 6 and n = 14
Therefore:
β = x + = 6 +
= 6 + 3.5 = 9
γ = 6
δ = =
= 7
The complete reaction equation is therefore given as:
C₆H₁₄ + 9O₂ → 6CO₂ + 7H₂O
To express as whole number integers, we multiply the coefficients through by 2:
2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O
Problem 2
From the reaction:
2 moles of hexane are required to completely react with 19 moles of O₂
∴ 5.6 moles of hexane would react with k moles of O₂
This gives: 5.6 x 19 = 2k
k =
k = 53.2moles of O₂
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Answer:
Ions of opposite charge strongly attract each other; those of like charges repel. As a result ions in an ionic compound are arranged in a particular manner.
Explanation:
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Answer:
49.4 mol Oxygen
Explanation:
Mg(NO3)2 ----- 6 O
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x = 8.24*6/1 = 49.44 mol ≈ 49.4 mol Oxygen
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.
Learn more about Fossil Fuels and Energy here:
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(B) effect of a magnetic field on nucleus spin
(C) masses of the atoms involved in the bond
(D) the type of vibration being observed
Answers
Answer:
The factors that govern the position of an IR absorption peak are:
(A) strength of the bond
(C) masses of the atoms involved in the bond
(D) the type of vibration being observed
Explanation:
In infrared spectroscopy the molecules absorb the frequencies that are characteristic of their structure. These absorptions occur at resonance frequencies, that is, the frequency of the absorbed radiation coincides with the frequency of vibration. The energies are affected by the shape of molecular potential energy surfaces, the masses of atoms and the associated vibronic coupling. The resonance frequencies are also related to the strength of the bond and the mass of the atoms at each end of it. Therefore, the frequency of vibrations is associated with a particular normal movement mode and a particular type of link.
Answers
Answer:
400 Joules
Explanation:
From the question,
The total kinetic energy of the water balling when hits the ground is given as
K.E = 1/2mv².................. Equation 1
Where K.E = Kinetic Energy of water ballon, m = mass of water balloon, v = velocity of water ballon
Given: m = 2 kilograms, v = 20 meters/second.
Substitute these values into equation 1
K.E = (2×20²)/2
K.E = 2×400/2
K.E = 400 Joules
Answers
Answer:
Moles = 0.375
Explanation:
Moles= m/M
= 12/32 = 0.375mol