Answer: C. Z is an intermediate.
Explanation: The given reaction is
And the rate equation is rate = k [X_2][Y]
From this, we can imply that either the concentration of Z is very small in comparison tot he other reactants or the reactant Z is an intermediate which is available only for the given small amount of time.
There can be various steps in the mechanism for the proposed reaction and Z can also react in any of the steps. It is not necessary that it should react in a step other than the rate determining step.
This might be possible that the activation energy for Z to react is very low But since it has made a new kind of product that is XZ, then the former cannot be true.
Sublimation;When anything solid turns into a gas without first becoming liquid, <span> When the surface layer of snow or ice turns into fog or steam without melting, </span>
These elements show variable oxidation states because their valence electrons are in two different sets of orbitals, that is (n-1)d and ns. The energy difference between these orbitals is very less, so both the energy levels can be used for bond formation. Thus, transition elements have variable oxidation states.
Mn−3d54s2 configuration shows highest oxidation state +7.
<h3 /><h3>Why do transition metals have more than one oxidation state?</h3>
Transition metals can have multiple oxidation states because of their electrons. The transition metals have several electrons with similar energies, so one or all of them can be removed, depending the circumstances. This results in different oxidation states.
<h3>How do you know which oxidation state is the highest?</h3>
To find the highest oxidation state in non-metals, from the number 8 subtract the number of the group in which the element is located, and the highest oxidation state with a plus sign will be equal to the number of electrons on the outer layer.
Learn more about oxidation state here:
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brainly.com/question/25551544</h3><h3 /><h3>#SPJ4</h3>
Answer:
605.4 J
Explanation:
When a certain substance absorbs a certain amount of energy, its temperature increases according to the equation:
where
Q is the heat absorbed
m is the mass of the substance
C is the specific heat capacity of the substance
is the change in temperature
In this problem, we have:
m = 15.5 g is the mass of the piece of aluminium
C = 0.902 J/g⁰C is the specific heat of the aluminium
is the change in temperature of the aluminium (in fact, at thermal equilibrium, the block of aluminium reaches the same final temperature as the coffee)
Therefore, the energy absorbed is