The compound Fe(NO2)2 is Iron (II) Nitrite.
Hope I could help :)
It would most likely be D because that’s how most of the things would be processed but sorry if I’m wrong.
25 moles of C3H8 will be produced from 75 moles of CO2.
<h3>Mole calculation</h3>
To find the value of moles of a product from the number of moles of a reactant, it is necessary to observe the stoichiometric ratio between them:

Analyzing the reaction, it is possible to see that the stoichiometric ratio is 1:3, so we can perform the following expression:
C3H8 CO2


So, 25 moles of C3H8 will be produced from 75 moles of CO2.
Learn, more about mole calculation in: brainly.com/question/2845237
<h3>0.020 × 1000 × 100</h3>
<h2>= 2000 mg of Sn</h2>
hope that helps !