In what way is Model A better than Model B? Model A shows the types of elements in the compound, but Model B does not. Model A s
2 answers:
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Answer: The pressure of the He is 2.97 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
Given : =total pressure of gases = 6.50 atm
= partial pressure of Nitrogen = 1.23 atm
= partial pressure of oxygen = 2.3 atm
= partial pressure of Helium = ?
putting in the values we get:
The pressure of the He is 2.97 atm
The given chemical reaction is:
The standard heats of formation of are:
Δ) = -285.8kJ/mol[/tex]
Δ) = -187.6 kJ/mol[/tex]
Calculating the change in heat:
Δ=∑ΔH
-∑ΔH
= [{2 * (-285.8 kJ/mol)} -{2*(-187.6 kJ/mol)}]
= -196.4 kJ/mol
Therefore, the change in enthalpy for the given reaction is -196.4 kJ/mol