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Nadusha1986 [10]
3 years ago
9

Do we generally break chemical bonds when we cool molecules?

Chemistry
1 answer:
olga_2 [115]3 years ago
7 0
The breaking of chemical bonds never releases energy to the external environment. Energy is only released when chemical bonds are formed. In general, a chemical reaction involves two steps: 1) the original chemical bonds between the atoms are broken, and 2) new bonds are formed. These two steps are sometimes lumped into one event for simplicity, but they are really two separate events. For instance, when you burn methane (natural gas) in your stove, the methane is reacting with oxygen to form carbon dioxide and water.
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Answer: 20L of H2O

Explanation:

C3H8 + 5O2 → 3CO2 + 4H2O

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From the equation,

112L of O2 produced 89.6L H2O

There for 25L of O2 will produce XL of H2O i.e

XL of H2O = (25 x 89.6)/112 = 20L

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3 years ago
PLA is a bioplastic that is biodegradable. Explain how is is created and why it is biodegradable.
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<h3>PLA consists of renewable raw materials and is biodegradable in industrial composting plants. </h3><h3>However, due to the lack of infrastructure, it is difficult to </h3><h3>compost PLA industrially or to</h3><h3> recycle it.</h3>
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antoniya [11.8K]

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A group of atoms bonded together by different chemical reactions. It is the smallest fundamental unit of a chemical compound.

Explanation:

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