Na (atomic no. 11) reacts with Cl (atomic no. 17) to become stable. In the reaction, Na will ____________, while Cl will _______
1 answer:
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Answer:
Look on the picture.
Explanation:
He could find only 2 isomers of n-hexane alkenes for this reaction. Other two could be marked from other direction.
Answer :
The enthalpy of reaction is, -187.6 kJ/mol
The total heat will be, -2251 kJ
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
(a) The formation of will be,
The intermediate balanced chemical reaction will be,
(1)
(2)
(3)
We are multiplying equation 1 by 2 and then adding all the equations, we get :
(b) The expression for enthalpy of reaction will be,
Therefore, the enthalpy of reaction is, -187.6 kJ/mol
(c) Now we have to calculate the total heat.
or,
where,
= enthalpy change = -187.6 kJ/mol
q = heat = ?
n = number of moles of coal =
Now put all the given values in the above formula, we get:
Thus, the total heat will be, -2251 kJ
<h2>Hello!</h2>
The answer is:
Since there is not information about the solute but only its mass, we need to assume that we are calculating the molar concentration of a solution or molarity. So, need to use the following formula:
Now, we know that the mass of the solute is equal 3.5 moles and the volume is equal to 1500 mL or 1.5L
Then, substituting into the equation, we have:
Have a nice day!