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prohojiy [21]
2 years ago
15

Which of the following explains why 1-pentyne has a slightly higher boiling point than 1-pentene? Group of answer choices The C-

C triple bond in 1-pentyne is more polar than the C-C double bond in 1-pentene. 1-Pentyne has more carbons than 1-pentene. 1-Pentyne has more carbons per hydrogen than 1-pentene. 1-Pentyne is linear while 1-pentene is trigonal planar.
Chemistry
1 answer:
nydimaria [60]2 years ago
8 0

Answer:

Correct options: (1) The C-C triple bond in 1-pentyne is more polar than the C-C double bond in 1-pentene and (2) 1-Pentyne is linear while 1-pentene is trigonal planar.

Explanation:

  • 1-pentyne has linear structure due to presence of triple bond. Therefore, 1-pentyne molecule cam come closer to each other as compared to 1-pentene (trigonal planar) and exert more van der waal intermolecular force.
  • Presence of more number of pi-electrons in triple bond makes 1-pentyne more polarizable. Hence van der waal force is more stronger in 1-pentyne as compared to 1-pentene.
  • Van der waal force is not so strong as compared to dipole-dipole force or H-bonding.
  • Therefore 1-pentyne has slightly higher boiling point than 1-pentene.

Correct options: (1) The C-C triple bond in 1-pentyne is more polar than the C-C double bond in 1-pentene and (2) 1-Pentyne is linear while 1-pentene is trigonal planar

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Mama L [17]

The mass of ethanol present in the vapor is 8.8×10⁻²g. when liquid and vapor ethanol at equilibrium.

The volume of the bottle = 4.7 L

Mass of ethanol = 0.33 g

Temperature (T1) = -11 oC = 273-11 = 262 K

P1 = 6.65 torr

Now we will calculate the mole by applying the ideal gas equation:-

PV = nRT

Or, n = PV/RT

Where P is the pressure

 T is the temperature

 R is the gas constant = 0.0821 L atm mol-1K-1

 V is the volume

Substituting the values of P, V, T, and R the mole of ethanol is calculated as:-

  = 0.001913 mol C2H6

Conversion of the mole to gm

Molar mass of ethanol (M) = 46.07 g/mol

Mass of C2H6O =0.001913 mol C2H6O 46.07 g/mol = 0.088 =  8.8×10⁻²g.

Hence, the mass of ethanol present in the vapor is found to be  8.8×10⁻²g.

Learn more about mole here:-brainly.com/question/15374113

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8 0
1 year ago
Classify the items based on whether they are or are not matter.
Phantasy [73]

Answer:

Matter:

toothpaste

gasoline

bacteria

cell

Not matter:

happiness

sound

Explanation:

Matter is something that has mass and volume. Happiness is just a feeling, it doesn't exist in 3d world. Sound is a wave or just the movement of matter (particles of matter). Others have masses and volumes.

6 0
2 years ago
Determine the final temperature of sample with a specific heat of 1.1 J/g°C and a mass of 385 g if it starts out at a temperatur
Assoli18 [71]

Answer:

T2 =21.52°C

Explanation:

Given data:

Specific heat capacity of sample = 1.1 J/g.°C

Mass of sample = 385 g

Initial temperature = 19.5°C

Heat absorbed = 885 J

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature - initial temperature

885J = 385 g× 1.1 J/g.°C×(T2 - 19.5°C )

885 J = 423.5 J/°C× (T2 - 19.5°C )

885 J / 423.5 J/°C = (T2 - 19.5°C )

2.02°C = (T2 - 19.5°C )

T2 = 2.02°C + 19.5°C

T2 =21.52°C

8 0
3 years ago
In at least three sentences, explain three disadvantages associated with hydrogen fuel use.
Dmitry_Shevchenko [17]

Here are some disadvantages, is that nitrogen dioxide is a toxic gas and it can still be harmful when ingested by human, also critics of hydrogen fuel cells argue that although these cells do not emit carbon after burning, they give out nitrogen dioxide and other emissions.

Hope this helps

7 0
3 years ago
Enter a balanced equation for the reaction between aqueous lead (II) nitrite and aqueous lithium chloride to form solid lead (II
Dominik [7]

Answer:

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Explanation:

Let's consider the reaction between aqueous lead (II) nitrite and aqueous lithium chloride to form solid lead (II) chloride and aqueous lithium nitrite.

Pb(NO₂)₂(aq) + LiCl(aq) ⇒ PbCl₂(s) + LiNO₂(aq)

This is a double displacement reaction. We will start balancing Cl by multiplying LiCl by 2.

Pb(NO₂)₂(aq) + 2 LiCl(aq) ⇒ PbCl₂(s) + LiNO₂(aq)

Now, we have to balance Li by multiplying LiNO₂ by 2.

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The equation is now balanced.

4 0
3 years ago
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