3 years ago

Why is energy required to break a covalent bond

2 answers:

6 0

Because when a chemical reaction occurs. molecular bonds are broken and other bonds are formed to make different molecules. Like for example: two bonds of water molecules are broken up into hydrogen and water form. Energy is required to break a bond.

Hope this helped :)

zmey [24]3 years ago

4 0

Energy is always required to break a bond, which is known as bond energy.

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sweet [91]

So let's convert this amount of mL to grams:

$\frac{13.6g}{1mL}*1.2mL=16.32g$

Then we need to convert to moles using the molar weight found on the periodic table for mercury (Hg):

$\frac{1mole}{200.59g}*16.32g=8.135*10^{-2}mol$

Then we need to convert moles to atoms using Avogadro's number:

$\frac{6.022*10^{23}atoms}{1mole} *[8.135*10^{-2}mol]=4.90*10^{22}atoms$

So now we know that in 1.2 mL of liquid mercury, there are $4.90*10^{22}atoms$ present.

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Lily took 57 seconds to walk from classroom to library. If the distance between the classroom and library was 38 m, at what aver

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Are photosynthesis and cellular respiration part of the land-based carbon cycle of water-based carbon cycle

Dmitrij [34]

It would be the water based carbon cycle

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3 years ago

When the substance dissolves the solution is not transparent true or false

bogdanovich [222]

Answer:

Some substances dissolve when you mix them with water. When a substance dissolves, it might look like it has disappeared, but in fact it has just mixed with the water to make a transparent (see-through) liquid called a solution.

Explanation:

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On average, how many hours of sleep do teenagers need each night? 7 hours 7.5 hours 8 hours 8.5 hours

Marrrta [24]

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