Answer:
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Explanation:olkkjl
Answer:
The coefficient of O2 is 11
Explanation:
Step 1:
The equation for the reaction:
FeS2 + O2 → SO2 + Fe2O3
Step 2:
Balancing the equation. The equation can be balance as follow:
FeS2 + O2 → SO2 + Fe2O3
There are 2 atoms of Fe on the right side and 1 atom on the left. It can be balance by putting 2 in front of FeS2 as shown below:
2FeS2 + O2 → SO2 + Fe2O3
There are 4 atoms of S on the left side and 1 atom on the right side. It can be balance by putting 4 in front of SO2 as shown below:
2FeS2 + O2 → 4SO2 + Fe2O3
Now, there are a total of 11 atoms of O on the right side and 2 atoms on the left side. It can be balance by putting 11/2 in front of O2 as shown below:
2FeS2 + 11/2O2 → 4SO2 + Fe2O3
Multiply through by 2 to clear the fraction as shown below:
4FeS2 + 11O2 → 8SO2 + 2Fe2O3
Now the equation is balanced.
The coefficient of O2 is 11
The on that is considered a physical change is : A. Sawing a piece of wood in half
When you cut a piece of wood, the chemical compound within the wood will not change at all, which mean that it's a physical change
hope this helps
Nuclear fusion
Explanation:
For a given mass, the energy released is greatest for a reaction involving nuclear fusion.
Nuclear reactions generally release far much more energy compared to chemical energy because they involve the interaction between strong nuclear forces. There are two main types of nuclear reactions which are fusion and fission.
Nuclear fusion powers the sun and releases the greatest amount of energy.
- In nuclear fusion, light atoms combines to form heavier ones.
- The reaction degenerates into chain reaction in which huge amount of energy is released.
- This reaction occurs in the core of sun and furnishes the solar system with radiant energy.
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Transmutation brainly.com/question/3433940
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Answer:
it takes about 29.5 days for the moon to complete a cycle