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1 year ago

What is the percentage of energy used each year in the United

Chemistry

1 answer:

Tcecarenko [31]1 year ago

6 0

The amount of energy that is required each year for the purpose of agriculture is only about 10%.

<h3>What is energy consumption?</h3>

Energy is a very important part of civilization. In the current time, energy is necessary for all kinds of productions and agriculture is not an exception.

As such, the amount of energy that is required each year for the purpose of agriculture is only about 10%.

Learn more about energy consumption:brainly.com/question/16025398

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vitfil [10]

Explanation:

The temperature of the molten iron remained constant at 2750°C because of the heat absorbed to effect the phase change and not to change the temperature.

The heat of vaporization is a latent or hidden heat absorbed by substances that causes a phase change from liquid to gas.

In essence, the heat is used to break intermolecular bonds between the particles of the melted vat.
If enough heat is no supplied the molten vat will not boil off and become vapor.
In transitioning from liquid to gas, heat is absorbed by a body to effect the phase change.
When the body acquires enough heat, the particles are able to break off and boil.
At the 2750°C mark, this is what is happening.

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2 years ago

BRAINLIEST IF CORRECT

tensa zangetsu [6.8K]

Answer

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3 years ago

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Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide.

prohojiy [21]

Answer:

2-methylene propylbenzene

Explanation:

The Wittig Reaction is a reaction that converts aldehydes and ketones into alkenes through reaction with a phosphorus ylide.

The ketone in this case is 1-phenylpropan-1-one. The provided phosphonium ylide is shown in the image attached. The reaction involves;

i) alkylation

ii) addition

The product of the major organic product of the reaction is 2-methylene propylbenzene.

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2 years ago

Why aren’t subatomic particles, which are smaller than an atom, considered to be the building blocks of matter?

Elena L [17]

Concrete is formed of sand. Is it incorrect to suggest that some houses are built using concrete blocks?

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2 years ago

Part a use these data to calculate the heat of hydrogenation of buta-1,3-diene to butane. c4h6(g)+2h2(g)→c4h10(g)

Reptile [31]

<u>Answer:</u> The heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

<u>Explanation:</u>

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as $\Delta H$

The equation used to calculate enthalpy change is of a reaction is:

$\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]$

For the given chemical reaction:

$C_4H_6(g)+2H_2(g)\rightarrow C_4H_{10}(g)$

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

$\Delta H_{rxn}=[(1\times \Delta H_{(C_4H_{10})})]-[(1\times \Delta H_{(C_4H_6)})+(2\times \Delta H_{(H_2)})]$

We are given:

$\Delta H_{(C_4H_{10})}=-2877.6kJ/mol\\\Delta H_{(C_4H_6)}=-2540.2kJ/mol\\\Delta H_{(H_2)}=-285.8kJ/mol$

Putting values in above equation, we get:

$\Delta H_{rxn}=[(1\times (-2877.6))]-[(1\times (-2540.2))+(2\times (-285.8))]\\\\\Delta H_{rxn}=234.2J$

Hence, the heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

4 0

3 years ago