2 years ago

PLEASE HELP WORTH 100 POINTS !!!!!

Chemistry

2 answers:

Rasek [7]2 years ago

5 0

Answer: Imidogen

Explanation: I just looked it up.

8_murik_8 [283]2 years ago

4 0

Answer:

Imidogen

Explanation:

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What are the three common fossil fuels?

JulsSmile [24]

Coal, oil, and natural gas are the 3 common fossil fuels

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3 years ago

12. Study the chemical reaction below, what are the product(s) in the reaction and what are the reactant(s) in the reaction (Sho

natita [175]

Explanation:

The reactants are Aluminium and Copper chloride.

The products are Copper and Aluminium chloride.

5 0

2 years ago

Butane C4H10 (g),(Hf = –125.7), combusts in the presence of oxygen to form CO2 (g) (Delta.Hf = –393.5 kJ/mol), and H2O(g) (Delta

shusha [124]

Answer: The enthalpy of combustion, per mole, of butane is -2657.4 kJ

Explanation:

The balanced chemical reaction is,

$2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

The expression for enthalpy change is,

$\Delta H=[n\times H_f_{products}]-[n\times H_f_{reactants}]$

Putting the values we get :

$\Delta H=[8\times H_f_{CO_2}+10\times H_f_{H_2O}]-[2\times H_f_{C_4H_{10}+13\times H_f_{O_2}}]$

$\Delta H=[(8\times -393.5)+(10\times -241.82)]-[(2\times -125.7)+(13\times 0)]$

$\Delta H=-5314.8kJ$

2 moles of butane releases heat = 5314.8 kJ

1 mole of butane release heat = $\frac{5314.8}{2}\times 1=2657.4kJ$

Thus enthalpy of combustion per mole of butane is -2657.4 kJ

3 0

2 years ago

zzz [600]

Answer:

i think kinetic energy sorry if I'm wrong.

6 0

2 years ago

For which structure(s) does the electron-bearing carbon atom have a formal charge of zero

AlladinOne [14]

Formal charge can be calculated from the following formula

Formal charge = valency of central atom - (number of lone pair of electrons + number of covalent bonds)

a) for methylene:

Formal charge = 4 -( 2+ 2) = 0

b) For methyl free radical

Formal charge = 4- (3 +1) = 0

6 0

2 years ago