Atoms<span> are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the </span>atom, which is called the nucleus<span>. Electrons are extremely lightweight and exist in a cloud orbiting the </span>nucleus.
D. Should be correct- the other ones don’t make sense
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Hello!</h2>
The answer is:
The third option, 79.8%
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Why?</h2>
To calculate the percent yield we need to divide the actual yield by the theoretical yield, and then, multiply it by 100 in order to find the percent.
So, we from the statement we know the following information:

Let's use the following formula and substitute the given information:


Hence, we have that the correct option is the third option, the percent yield is 79.8%.
Have a nice day!
No. of moles in 134g of Mg, n=134/24 =5.58 moles
No. of atoms = n* Avogadro number
= 5.58 X 6.022 X 10^23
=33.60 X 10^23 atoms