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timsher
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Hey guys, I'm really lost on this question...could somebody please point me in the right direction?
Thanks!
Thanks!
The annual world use of liquid hydrocarbon fuels for transportation purposes currently generates about 10^17 kJ. If we could instead run our transportation system by oxidizing hydrogen gas to gaseous water, we would likely have to obtain the hydrogen by electrolyzing water. Suppose we made and stored enough hydrogen for 100 years by electrolyzing seawater. By how much would the level of the oceans decrease (in m)?
The field of energy-related chemistry focuses on the study of how energy is involved in chemical reactions and processes. This includes understanding the role of energy in bond formation and breaking, as well as the energy changes that occur during chemical reactions.
In chemistry, energy is typically measured in joules (J) or kilojoules (kJ). The amount of energy involved in a chemical reaction can be determined through various methods, such as calorimetry or thermodynamic calculations.
Energy-related chemistry has many applications, including the production of fuels from renewable resources, the development of more efficient batteries and solar cells, and the study of how energy is stored and transferred in biological systems.
The states of matter (solid, liquid, gas) are determined by the amount of energy present in a substance. As energy is added or removed, substances can change states. For example, adding energy to a solid can cause it to melt into a liquid, and removing energy from a gas can cause it to condense into a liquid.
One common misconception is that energy is consumed or destroyed during a chemical reaction. In reality, energy is conserved and can only be converted from one form to another. Another misconception is that energy is only related to heat, when in fact it can also be in the form of light, electricity, or mechanical motion.