Answer: C
Explanation:
The one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals.
Separate Salt and Water Using Distillation
If you want to collect the water, you can use distillation. This works because salt has a much higher boiling point than water. One way to separate salt and water at home is to boil the salt water in a pot with a lid.
hope this helps!!
Answer:
In math class how would you explain an object that had symmetry?? this is for sciens about plants and animals??
Explanation:
In math class how would you explain an object that had symmetry?? this is for sciens about plants and animals??
The statement that is correct concerning Hess's law is D. Hess' Law of Constant Heat Summation expresses that paying little respect to the numerous stages or ventures of a response, the aggregate enthalpy change for the response is the whole of all progressions. This law is an indication that enthalpy is a state work.
<span>Cracking of hydrocarbons involves thermal decomposition.
This means that large hydrocarbon molecules break into
smaller molecules when they are heated. The <span>hydrocarbons
</span>are boiled and the <span>hydrocarbon gases </span>are either
mixed with steam and heated to a very high temperature or
passed over a hot <span>powdered </span>aluminium oxide catalyst.
The catalyst works by providing the <span>hydrocarbon gases
</span>with a convenient surface for the cracking to take place.</span>
<span>For example, decane (an alkane with 10 carbons)
can be cracked to produce octane and ethene.</span>
decane<span> octane + ethene.
<span>C10H22</span>(g) <span>C8H18</span>(g) + C2<span>H4</span>(g)</span>
<span>Octane is used as petrol.
Ethene is used in the manufacture of polymers.</span>
<span>Cracking an alkane produces a smaller alkane plus an alkene.
If you add up the number of hydrogen atoms in the
above reaction, you will see that there are 22 on each side.
An alkene is produced because the original alkane does
<span>not </span>have enough hydrogen atoms to produce two more<span> alkanes</span>.</span>
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<span>hope this helps </span>
