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lord [1]
3 years ago
6

For each system listed in first column of the table below, decide (if possible) whether the change described in the second colum

n will increase the entropy For each system listed in first column of the tabl of the system, decrease For each system listed in first column of the tabl , or leave unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column.SystemChange?SA few moles of nitrogen (N2) gas.The nitrogen is compressed from a volume of to a volume of while the temperature is held constant at <?S0=?S0>?S0not enough informationA few grams of liquid acetone ((CH3)2CO).The acetone evaporates at a constant temperature of <?S0=?S0>?S0not enough informationA few moles of nitrogen (N2) gas.The nitrogen is cooled from to and is also expanded from a volume of to a volume of <?S0=?S0>?S0not enough informationFor each system listed in first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy For each system listed in first column of the tabl of the system, decrease For each system listed in first column of the tabl , or leave unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column.SystemChange?SA few moles of nitrogen (N2) gas.The nitrogen is compressed from a volume of to a volume of while the temperature is held constant at <?S0=?S0>?S0not enough informationA few grams of liquid acetone ((CH3)2CO).The acetone evaporates at a constant temperature of <?S0=?S0>?S0not enough informationA few moles of nitrogen (N2) gas.The nitrogen is cooled from to and is also expanded from a volume of to a volume of <?S0=?S0>?S0not enough information
Chemistry
1 answer:
Olin [163]3 years ago
4 0
The answer could be 25
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For a covalent bond to be polar, the two atoms that form the bond must have differing atomic weights.
sertanlavr [38]

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in ionic bond one of the 2 atoms attract the electrons from the another and don't share it so the electronegativity must be different to make the attract tendency different.

so,

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3 years ago
Given the enthalpies of reaction
Tju [1.3M]

2SO₂+O₂⇒2SO₃  ΔH=-197 kJ

<h3>Further explanation</h3>

Based on the principle of Hess's Law, the change in enthalpy of a reaction will be the same even though it is through several stages or ways

Reaction

2SO₂+O₂⇒2SO₃

Given :

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Reverse

SO₂(g) ⇒S(s)+O₂(g ΔH = +297 kJ (sign change to +) x 2

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2.2S(s)+3O2(g)→2SO3(g) ΔH=-791kJ

Add both reactions and remove/subtract the same compound for different sides

1. 2SO₂(g) ⇒2S(s)+2O₂(g) ΔH =  +594 kJ

2.2S(s)+3O₂(g)→2SO₃(g) ΔH=-791kJ

--------------------------------------------------------+

2SO₂+O₂⇒2SO₃  ΔH=-197 kJ

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Answer:

Explanation:

Carbon (coke) burns in air to form carbon dioxide gas.

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