Explanation:
It is known that the oxidation of
to
is catalyzed by
. In this process, two steps are involved as follows.
(a)
whereas, the second step is
(b)
Balancing the above reaction by multiplying equation (a) by 2 as follows.
(c)
Now, on adding both reaction equations (b) and (c) the net reaction equation will be as follows.
Thus, we can conclude that the equation for the final overall oxidation of
by
to give
is as follows.
There are 1.48 × 10²⁵ molecules of zinc oxide in a 2 kg sample. Details about number of molecules can be found below.
<h3>How to calculate number of molecules?</h3>
The number of molecules of a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number.
According to this question, there are 2000g of ZnO in a sample. Zinc oxide has a molar mass of 81.38 g/mol.
no of moles = 2000g ÷ 81.38g/mol
no of moles = 24.57mol
number of molecules = 24.57 × 6.02 × 10²³
number of molecules = 147.95 × 10²³
Therefore, there are 1.48 × 10²⁵ molecules of zinc oxide in a 2 kg sample.
Learn more about number of molecules at: brainly.com/question/11815186
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<span>they are the last organisms to appear.
hope that helps
</span>
Answer:
kul and yours hope it was great
Answer:
350mmHg
Explanation:
Use Dalton law
Total=P gas 1+p gas 2+ P gas 3
825=P1+350+125
825=P1+475
825-475= P1
P1= 350 mm Hg