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3 years ago

One method of favoring the formation of an ester is to add excess acetic acid.

Chemistry

1 answer:

AleksandrR [38]3 years ago

4 0

Answer: True

Explanation:

An ester refers to the class of organic compounds which react with water in order to produce organic acids, inorganic acids or alcohol. They are usually gotten from carboxylic acids.

A method of favoring the formation of an ester is to add excess acetic acid. Therefore, the above statement is true.

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Helppp ! Please :’)

Over [174]

Answer:

$\boxed{\sf \lambda \: = 1.282 \times {10}^{ 3} nm}$

Explanation:

Suppose an electron makes transition from n initial (ni) to n final (nf) then formula for wavelength is given by,

$\frac{1}{ \lambda} = R_H {Z}^{2} \big(\frac{1}{{n_f^2}} - \frac{1}{{n_i^2}} \big)$

Where,

λ is wavelength of photon
Rʜ is rydberg constant, the value of Rʜ is

109690 Cm-¹ in Puri Sharma Pathania standard book of physical chemistry &

109737 Cm-¹ according to Wikipedia

Z is the atomic number of atom, for hydrogen Z =1,

& according to given data, ni = 5, nf = 3

Solution:

Let's solve for wavelength,

Substituting all the given data in above formula,

$\frac{1}{ \lambda} = 109690 \times {1}^{2} \big(\frac{1}{{3^2}} - \frac{1}{{5^2}} \big)$

$\frac{1}{ \lambda} = 109690 \times {1}^{2} \big(\frac{1}{{9}} - \frac{1}{{25}} \big)$

$\frac{1}{ \lambda} = 109690 \times {1}^{2} \times \frac{25 - 9}{25 \times 9}$

$\frac{1}{ \lambda} = 109690 \times {1}^{2} \times \frac{16}{225}$

$\frac{1}{ \lambda} = 7800.18 \: \: cm ^{ - 1}$

$\lambda = 1.282 \times {10}^{ - 4} cm$

Now we know that, 1 cm = 10000000 nm,

Converting the wavelength from Cm → Nm

$\lambda \: = 1.282 \times {10}^{ - 4} \times {10}^{7}$

$\lambda \: = 1.282 \times {10}^{ - 4 + 7}$

$\sf \lambda \: = 1.282 \times {10}^{ 3} nm$

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2 years ago

Do all animals adapt in the same way to survive?

Nezavi [6.7K]

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3 years ago

What is the mass of 5.6 moles of Iron (III) Oxide?

Ronch [10]

Answer:

312.731

Explanation:

it had a long answer but im sure ur teacher wanted u to round it

hope this helps!

~goldfishareswag/brianna

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3 years ago

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Uv gel enhancements rely on ingredients from the monomer liquid and ________ chemical family.

pishuonlain [190]

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4 years ago

What is the wavelength of a photon having a frequency of 1.65x10^15 Hz? (c = 3.00 × 108 m/s, h = 6.63 × 10–34 J · s)

olga_2 [115]

Answer

here.

Explanation:

https://www.chegg.com/homework-help/questions-and-answers/habib-chami-attempt-1-question-12-3-points-wavelength-photon-frequency-165-x-10-15-hz-c-30-q48412138

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