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2 years ago

How many non bonded electron pairs are in the tetracyanoethylene molecule?

Chemistry

2 answers:

algol [13]2 years ago

8 0

Each of the Nitrogen atoms has 2 non bonded valence electrons, meaning that there are 4 pairs total.

Ganezh [65]2 years ago

3 0

Answer:

There are 4 non bonded electron pair in tetracyanoethylene

Explanation:

In tetracyanoethylene, four cyano groups are attached with an ethylene moiety.
Non bonded electron pairs in tetracyanoethylene molecule are present on N atoms in cyano groups.
Each N atom in a cyano group contains one non bonded electron pair.
There are 4 cyano groups in tetracyanoethylene.
Hence there are 4 non bonded electron pair in tetracyanoethylene.
Lewis structure of tetracyanoethylene has been given below.

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How would life be different if there were 10 hours in a day

Anna71 [15]

Answer:

If there was only 10 hours in a day, including the night time it would be complexly new environment. Say you are up for 7 hours and sleep 3, in those 7 hours you would go to work for probably 4 hours, come home and do stuff for 3 then go to bed and do it all over again.

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2 years ago

Butane (C4 H10(g), Hf = –125.6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Hf = –393.5 kJ/mol ) and water (H2 O,

WITCHER [35]

Answer: Enthalpy of combustion (per mole) of $C_4H_{10} (g)$ is -2657.5 kJ

Explanation:

The chemical equation for the combustion of butane follows:

$2C_4H_{10}(g)+4O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

The equation for the enthalpy change of the above reaction is:

$\Delta H^o_{rxn}=[(8\times \Delta H^o_f_{CO_2(g)})+(10\times \Delta H^o_f_{H_2O(g)})]-[(1\times \Delta H^o_f_{C_4H_{10}(g)})+(4\times \Delta H^o_f_{O_2(g)})]$

We are given:

$\Delta H^o_f_{(C_4H_{10}(g))}=-125.6kJ/mol\\\Delta H^o_f_{(H_2O(g))}=-241.82kJ/mol\\\Delta H^o_f_{(O_2(g))}=0kJ/mol\\\Delta H^o_f_{(CO_2(g))}=-393.5kJ/mol\\\Delta H^o_{rxn}=?$

Putting values in above equation, we get:

$\Delta H^o_{rxn}=[(8\times -393.5)+(10\times -241.82)]-[(2\times -125.6)+(4\times 0)]\\\\\Delta H^o_{rxn}=-5315kJ$

Enthalpy of combustion (per mole) of $C_4H_{10} (g)$ is -2657.5 kJ

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2 years ago

Help please

andrew11 [14]

Answer:

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Explanation:

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Solubility is dependent on temperature. The solubility curve is a graphical representation of the dependence of solubility on temperature for different chemical species.

If we study the solubility curve closely, we will see that K2Cr2O7 has the highest solubility at 100°C. This means that if the trends continue, this substance will also have the highest solubility at 120°C.

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2 years ago

Read 2 more answers

Why is the temperature needed to freeze ocean water lower than the temperature needed to freeze the surface of a freshwater lake

shepuryov [24]

Ocean water freezes just like freshwater, but at Lower temperature. Fresh water freezes At 32°F but see water freezes at about 28.4°F because of the salt in it it can be melted down to use as drinking water

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2 years ago

Isotopes of the same element have different numbers of<br> protons<br> electrons<br> neutrons

MrRa [10]

Answer:

Protons and electrons

Explanation:

They have a different number of neutrons giving them a different atomic weight while having the same charge

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3 years ago