A homogenous mixture of two or more substances is known as a(n) Select one: a. element b. compound c. solution d. atom
1 answer:
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Answer:
The forward reaction is occurring at a faster rate than the reverse reaction.
Explanation:
Reaction quotient (Q) of the given reaction is -
where [NO], and
represents concentrations of respective species at a certain time.
Here = 0.80 M,
= 0.050 M and [NO] = 0.10 M
So,
Hence
It means that forward reaction is faster than reverse reaction at that point. Because then only concentration of NO is higher than concentrations of and
which makes Q higher than K.
Answer:
The change in internal energy during the combustion reaction is- 545.71 kJ/mol.
Explanation:
First we have to calculate the heat gained by the calorimeter.
where,
q = heat gained = ?
c = specific heat =
= Initial temperature =
= Final temperature =
Now put all the given values in the above formula, we get:
Now we have to calculate the enthalpy change during the reaction.
where,
= enthalpy change = ?
q = heat gained = -477.5 J
n = number of moles methanol =
Therefore, the change in internal energy during the combustion reaction is- 545.71 kJ/mol.