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AveGali [126]
4 years ago
15

A lower yield of phosphonium salt is obtained in refluxing benzene than in xylene (Experi- ment 43A). Look up the boiling points

for these solvents, and explain why the difference in boiling points might influence the yield
Chemistry
1 answer:
77julia77 [94]4 years ago
7 0

Answer:

Benzene has a boiling point of 80.1 ºC, while xylene has a boiling point of 139 ºC, indicating that benzene has a lower temperature than xylene, this means that the reaction will be carried out at a lower temperature.

High temperatures will favor creating products with higher performance since more energy is available. Instead at lower temperatures, the reaction may not continue at the same rate, so the products will form very slowly and will not form completely, resulting in poor yield.

Explanation:

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Idk how to do this at all!!!
sergey [27]
Hello there!

I am not really sure which part you are talking about but let me answer some of them.

First, you need to read the information they gave you about glucose etc..

13- What is produced in photosynthesis?
"Photosynthesis is essential for all life on earth, because it provides food and oxygen."

Thus, the answer is: Photosynthesis produced food and oxygen.

14- What is the glucose used for?
"The glucose produced is used by the plant for energy and growth."

Thus, the answer is: The glucose used for energy and growth of the plants.

15- What is the oxygen used for?
"The oxygen produced is released into the air for us to breath."

Thus, the answer is: The oxygen used for us to breath.


I hope this helps!

Let me know if you have questions about the answer.

 
3 0
3 years ago
Calculate the standard enthalpy of formation of carbon disulfide (CS2) from it's elements, given that C(graphite) + O2(g) → CO2(
ch4aika [34]

Answer:

Standard enthalpy of formation of Carbon disulfide CS2 = 87.3 KJ/mol

Explanation:

forming CS2 means that it should in the product side

C(graphite) + O2 → CO2                  ΔH = -393.5

2S(rhombic) + 2O2 → 2SO2            ΔH = -296.4 x 2

CO2 + 2SO2 → CS2 + 3O2             ΔH = -1073.6 x -1

the second reaction is multiplied by 2 so that the SO2 and O2 can cancel out.

the third reaction is reversed (multiplied by -1) so that CS2 will be on the product side.

after adding the reaction and cancelling out similarities, the final reaction is: C(graphite) + 2S(rhombic) → CS2

Add ΔH to find the enthalpy of formation of CS2

ΔHf = (-393.5) + (-296.4 x 2) + (-1073.6 x -1) = 87.3 KJ/mol

be aware of signs

3 0
3 years ago
What are the five steps a flavor chemist needs to review before starting a flavor project
Katyanochek1 [597]

Answer:

flavorists, work primarily in the food, beverage, pharmaceutical, cosmetic, and pet industries. They use scientific and analytical tools, along with creativity, to boost natural flavors and create new ones

5 0
4 years ago
What are the major parts of the ecosystem
eduard

Answer:

Ecosystems have lots of different living organisms that interact with each other. The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.

Explanation:

Hope this helps

4 0
3 years ago
Calculate no of moles in 42g of carbon ?
kondaur [170]

Answer:

\huge\boxed{n = 3.5\ moles}

Explanation:

<u><em>Given :</em></u>

Mass in grams = m = 42 g

Molar Mass = M = 12

<u><em>Required:</em></u>

No. of moles = n = ?

<u><em>Formula :</em></u>

m = m / M

<u><em>Solution:</em></u>

n = 42 / 12

n = 3.5 moles

4 0
3 years ago
Read 2 more answers
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