These atoms are bonding to increase their stability and decrease their energy levels by bonding into electron configurations that follow the Octet Rule. The Octet Rule relates to atoms wanting to have 8 valence electrons in their outer-most electron shell. Noble gases are the only elements to already have 8 valence electrons before bonding. For this reason, Noble gases are usually already stable low energy atoms that are less likely to form bonds than all the other elements on the periodic table.
Answer: This is called fulfilling the Octet Rule.
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Answer:
The entropy change for the vaporization of 18 grams of a hydrocarbon at its boiling point is 12.87 J/K.
Explanation:
Mass of hydrocarbon = 18 g
Molar mass of hydrocarbon = 114 g/mol
Moles of hydrocarbons =
The enthalpy of vaporization of hydrocarbon =
Heat required to heat 0.1579 moles of hydrocarbon = Q
Q = 4.263 kJ = 4,263 J ( 1 kJ = 1000 J)
Boiling point of hydrocarbon = T = 58.2°C = 58.2 + 273 K = 331.2 K
Entropy change for the vaporization of 18 g of a hydrocarbon:
The entropy change for the vaporization of 18 grams of a hydrocarbon at its boiling point is 12.87 J/K.
Answer:
Oxygen exists as a diatomic molecule in nature when it is not combined with any other element. It forms O2 molecule because it is stable when it is uncombined. ... By achieving octet configuration, the diatomic elements become more stable compared to the single atom. Therefore, oxygen and hydrogen are diatomic.
Explanation:
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Answer:
The correct answer is A
Explanation:
Hydrogen, oxygen, chlorine are the most abundant elements in oceans.
Oxygen is 85.84% by mass
Hydrogen is 10.82% by mass
Chlorine is 1.94% by mass
Use the equation for uniform acceleration:
distance = Vo*t + a * t^2 / 2
As the car is initially at rest, Vo = 0
=> distance = a * t^2 / 2.
Now solve for a and replace the data of time and distance:
a = 2 * distance / (t^2)
a = 2 * 120m / (6.32s)^2 = 240m / 39.9424 s^2 = 6.009 m/s^2
Which approximates to 6 m/s^2.
So, the answer is the option B.) 6 meters / second^2