1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
galina1969 [7]
3 years ago
7

Nylon 6,6 may be formed by means of a condensation polymerization reaction in which hexamethylene diamine [NH2-(CH2)6-NH2] and a

dipic acid react with one another with the formation of water as a byproduct. What masses of________(a) hexamethylene diamine and(b) adipic acid are necessary to yield 26 kg of completely linear nylon 6,6? This polymerization reaction occurs according to the following equation:

Chemistry
1 answer:
Burka [1]3 years ago
3 0

Answer:

Mass of hexamethylenediamine= 13,470.62 g

Mass of adipic acid =  16,940.13 g

Explanation:

Nylon -6,6 is synthesized by poly-condensation of hexamethylenediamine [NH₂-(CH₂)₆-NH₂] and adipic acid (C₆H₁₀O₄).

Both of these are taken in equal equivalents and reacted to form nylon 6,6 and by-product water is also formed.

Molecular mass of hexamethylenediamine [NH₂-(CH₂)₆-NH₂] =116.21 g/mol

Molecular mass of adipic acid (C₆H₁₀O₄) = 146.1412 g/mol

Molecular mass of Nylon 6,6 (C₁₂H₂₀N₂O₂) = 224.3 g/mol

Using unitary method :

Mass of hexamethylenediamine required for 26,000 g of Nylon 6,6 if 116.21 g/mol is required for 224.3 g/mol, is:

= \frac{26,000 *  116.21}{224.3}

= 13,470.62 g

Mass of adipic acid required for 26,000 g of Nylon 6,6 if 146.1412 g/mol is required for 224.3 g/mol, is:

= \frac{26,000 *  146.1412}{224.3}

= 16,940.13 g

You might be interested in
Scoring: Your score will be based on the number of correct matches minus the number of incorrect matches. There is no penalty fo
jarptica [38.1K]

Answer:

a. Too close to zero

b. ΔS > 0

c. Too close to zero

d. ΔS < 0

e.  ΔS > 0

Explanation:

In order to answer this question we need to compare the change in number of mol in the gas state for the products vs the reactants.

An increase in number moles gas leads to a positive change in entropy. Conversely a decrease will mean ΔS is negative.

Now we can solve the parts in this question.

a. H₂ (g) + F₂ (g)   ⇒  2 HF (g)

We have no change in the number of moles gas products minus reactants. Therefore is too close to zero to decide since there is no change in mol gas.

b. 2 SO₃ ( g) ⇒ 2 SO₂ (g) + O₂ (g)

We have three moles of gas products starting with 2 mol gas SO₂, therefore ΔS is positive.

c. CH₄ (g) + 2 O₂ (g)   ⇒ CO₂ (g) + 2 H₂O (g)

Again, we have the same number of  moles gas in the products and the reactants (3), and it is too close to zero to decide

d.  2 H₂S (g) + 3 O₂(g) ⇒ 2 H2O (g) + 2 SO₂ (g)

Here the change in number of moles gas is negative ( -1 ), so will expect ΔS < 0

e. 2H₂O₂ (l)   ⇒ 2H₂O(l) +- O2(g)

Here we have 1 mol gas and 2 mol liquid  produced from 2 mol liquid reactants, thus the change in entropy is positive.

3 0
3 years ago
What is woven into farbic?​
LenaWriter [7]

Woven fabric is any textile formed by weaving. Woven fabrics are often created on a loom, and made of many threads woven on a warp and a weft. Technically, a woven fabric is any fabric made by interlacing two or more threads at right angles to one another.

4 0
3 years ago
PLEASE HELP ME!!!! I DON'T UNDERSTAND
Sunny_sXe [5.5K]

Answer:

I think the answer is c. It would have difficulty moving.

Explanation:

The skeleton helps the vertebrate move and supports its body, so it will most likely have trouble moving.

8 0
2 years ago
Sulfur dioxide has a vapor pressure of 462.7 mm Hg at –21.0 °C and a vapor pressure of 140.5 mm Hg at –44.0 °C. What is the enth
stealth61 [152]

Answer : The value of \Delta H_{vap} is 28.97 kJ/mol

Explanation :

To calculate \Delta H_{vap} of the reaction, we use clausius claypron equation, which is:

\ln(\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}[\frac{1}{T_1}-\frac{1}{T_2}]

where,

P_1 = vapor pressure at temperature -21.0^oC = 462.7 mmHg

P_2 = vapor pressure at temperature -44.0^oC = 140.5 mmHg

\Delta H_{vap} = Enthalpy of vaporization = ?

R = Gas constant = 8.314 J/mol K

T_1 = initial temperature = -21.0^oC=[-21.0+273]K=252K

T_2 = final temperature = 45^oC=[-41.0+273]K=232K

Putting values in above equation, we get:

\ln(\frac{140.5mmHg}{462.7mmHg})=\frac{\Delta H_{vap}}{8.314J/mol.K}[\frac{1}{252}-\frac{1}{232}]\\\\\Delta H_{vap}=28966.6J/mol=28.97kJ/mol

Therefore, the value of \Delta H_{vap} is 28.97 kJ/mol

4 0
3 years ago
You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years?
Degger [83]
After 3 years, the substance will go through 4 half lives. You can do 230*(1/2)^4, which is 14.375.
6 0
3 years ago
Other questions:
  • The molecule h2so4is ionized to h+ ions and so4- ions in water. would you predict this to result in a solution that is acidic or
    14·1 answer
  • Solution A has a pH of 4.
    11·1 answer
  • The following reaction is done at
    13·2 answers
  • why is often necessary to follow extensive purification procedures in the isolation of organic compounds?​
    13·1 answer
  • Conclusions drawn from personal beliefs are:
    6·2 answers
  • At a certain temperature the vapor pressure of pure heptane is measured to be . Suppose a solution is prepared by mixing of hept
    15·1 answer
  • What is true of both galvanic and electrolytic cells?
    10·2 answers
  • Zinc-64 undergoes beta decay as shown:
    12·1 answer
  • How many moles of gas are in a 30 liter compressed air tank if the
    15·2 answers
  • Are two atoms of the same element identical
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!