What is the total number of carbon atoms in a molecule of ethanoic acid?(1) 1 (3) 3(2) 2 (4) 4
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Electrons located in the outermost shell of an atom are called _________ electrons. a. valence b. Border c. Octet d. rim
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2C8H18+25O2----> 16CO2+18H2O when balanced. 10/114.229 g/mol = .087543... mol, converting to moles by dividing by molar mass. The ratio is 25/2, using the integers in front of the molecules in the balanced equation. so you just multiply .087543... by the ratio. That's 1.09429, which you multiply by the molar mass of O2, 31.9988 g/mol. The answer is 35.02 g O2
35.2 grams of oxygen are required to react with 10.0 grams of octane
Complete combustion of Hydrocarbons with Oxygen will be obtained by CO₂ and H₂O compounds.
If O₂ is insufficient there will be incomplete combustion produced by CO and H and O
Hydrocarbon combustion reactions (specifically alkanes)
For gas combustion reaction which is a reaction of hydrocarbons with oxygen produces CO₂ and H₂O (water vapor). can use steps:
Balancing C atoms, H and last atoms O atoms
Octane combustion reaction
C₈H₁₈ + O₂ ---> CO₂ + H₂O
To equalize the reaction equation we give the reaction coefficients with variables a, b and c while the most complex compounds, namely Octane, we give the number 1
So the reaction becomes
C₈H₁₈ + aO₂ ---> bCO₂ + cH₂O
C atom on the left 8, right b, so b = 8
left H atom = 18, right 2c so 2c = 18 ---> c = 9
Atom O on the left 2a, right 2b + 2c, so 2a = 2b + 2c
2a = 2.8 + 9
2a = 16 + 9
2a = 25
a = 25/2
The equation becomes:
C₈H₁₈ + 25/2O₂ ---> 8CO₂ + 9H₂O or be
2C₈H₁₈ + 25O₂ ---> 16CO₂ + 18H₂O
To find the mass O2, we find the mole first from the mole ratio with Octane
- 1. We are looking for the octane mole
Mr. octane = 8.Ar C + 18.Ar H
Mr. octane = 8.12 + 18.1
Mr octane = 96 + 18
Mr octane = 114
known octane mass: 10 grams then the mole:
mol = gram / Mr
mol = 10/ 114
mol = 0.088
- 2. We look for the O₂ mole
because of the ratio of the reaction coefficient between O2 and octane = 25: 2 then the mole of O₂ =
25/2 x 0.088 = 1,1
So that the mass O₂ =
mole. Mr = 1.1 32
mass = 35.2 grams
a combustion reaction
the type of chemical reaction
The combustion of alkanes, alkenes, and alkynes
Complete combustion of a sample of a hydrocarbon
Keywords: Complete combustion of Hydrocarbons, alkanes, equalize the reaction equation
B. 1s2 2s2 2p6 3s2 3p3
C. 1s2 2s2 2p6 3s1 3p3
D. 1s2 2s2 2p6 3s2 2d3
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Answer:
1s2 2s2 2p6 3s2 3p2
Explanation:
you're welcome
bond?
(1) H2 (3) O2
(2) N2 (4) Cl2
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Answer: The correct answer is Option 2.
Explanation:
Covalent bond is defined as the b which is formed by the sharing of electrons between the atoms forming a bond.
Non-polar covalent bond is defined as the bond which is formed when there is no difference in electronegativity between the atoms. When atoms of the same element combine, it results in the formation of non-polar covalent bond. For Example: etc..
For the given options:
- Option 1:
Hydrogen is the 1st element of the periodic table having electronic configuration
This element needs 1 electron to attain stable electronic configuration and will form single covalent bond with another hydrogen atom.
- Option 2:
Nitrogen is the 7th element of the periodic table having electronic configuration
This element needs 3 electrons to attain stable electronic configuration and will form triple covalent bond with another nitrogen atom.
- Option 3:
Oxygen is the 8th element of the periodic table having electronic configuration
This element needs 2 electrons to attain stable electronic configuration and will form double covalent bond with another oxygen atom.
- Option 4:
Chlorine is the 17th element of the periodic table having electronic configuration
This element needs 1 electron to attain stable electronic configuration and will form single covalent bond with another chlorine atom.
Hence, the correct answer is Option 2.
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An addition of acid increases the solubility of calcium phosphate because the hydrogen ions can easily dissociate and form salts. And example is from the reaction 3H2SO4 + Ca3(PO4)2 → 2H3PO4 + 3CaSO4. CaSO4 is the salt of sulfuric acid and calcium phosphate.
Mass remains constant.
B)
Only the form changes.
Kinetic energy changes.
D)
Something chemically new is formed.
Science
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Answer:
"Something chemically new forms" is the incorrrect statement
Explanation:
When a substance changes its state, it retains its mass even though its form and kinetic energy changes. It is simply moving between states, that is: loosing energy or gaining it. its chemical composition does not change.
Have a good day dude
Answer:
Science...Only the form changes.Kinetic energy changes.
Explanation:
SCIENCE