Answer:
For 8 moles of iron 6 moles of oxygen are required.
Explanation:
Given data:
Number of moles of oxygen needed = ?
Number of moles of Fe = 8 mol
Solution:
Chemical equation:
4Fe + 3O₂ → 2Fe₂O₃
Now we will compare the moles of iron and oxygen from balance chemical equation.
Fe : O₂
4 : 3
8 : 3/4×8 = 6
So for 8 moles of iron 6 moles of oxygen are required.
Answer:
C
Explanation:
should be different numbers of neutrons
Answer:
A physicist
Explanation:
Physics is that aspect of science that deals with nature and matter in relation to energy. Electricity is a source for energy
Answer:
<h3>
C. 3</h3>
Explanation:
there are three electrons in a 2p sub-energy level of s neutral nitrogen atom.
ions because it’s still the same element, however the charge has changed
