Critical Thinking: How are Volcanoes connected to the formation of the atmosphere and oceans????
1 answer:
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1) Left up: a chemical change. We can see new substance (red-blue) is formed from one blue and one red atom.
In chemical change new substances are formed, the atoms are rearranged and the reaction is followed by an energy change.
2) Left down: a chemical change. We can see new substance (red-blue) is formed from two blue and one red atoms.
3) MIddle: a physical change. There is no new substance. Bonds are not broken.
4) Right up: a chemical change. Bonds are broken.
5) Right down: a physical change. Change of state of matter.
Explanation:
As the given chemical reaction equation is as follows.
Also, it is given that for 2 moles the energy required is 130 kcal. This means that energy required for 1 mole is calculated as follows.
1 mole =
= 65 kcal
Hence, energy required for 7 moles will be calculated as follows.
Energy required =
= 455 kcal
Thus, we can conclude that energy required to produce 7.00 mol on the basis of given reaction is 455 kcal.