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
seropon [69]
3 years ago
14

The surface tension of water is 7.28 ✕ 10−2 J/m2 at 20°C. Predict whether the surface tension of octane would be higher or lower

than that of water at the same temperature. Explain your answer.
Physics
1 answer:
qaws [65]3 years ago
7 0

Explanation:

It is known that octane is a hydrocarbon and London dispersion forces are the main intermolecular forces which are present in it.

Whereas water molecules tend to form hydrogen bonding forces which are actually much stronger than dipole-dipole interactions. This means that more energy is necessary to separate water molecules from one another than to separate octane molecules from one another.

Hence, we can conclude that surface tension of octane is expected to be lower than that of water when the two are considered at the same temperature.

You might be interested in
SELECT ALL THE CORRECT ANSWERS
Aleonysh [2.5K]
I think the answer is x
3 0
3 years ago
A capacitor with plates separated by a distance d is charged to a potential difference ΔVC. All wires and batteries are disconne
Tom [10]

Answer:

Explanation:

Initial separation of plate = d

final separation = 2d

The capacitance of the capacitor will reduce from C to C/2 because

capacitance = ε A / d

d is distance between plates.

As the batteries are disconnected , charge on the capacitor becomes fixed .

Initial charge on the capacitor

= Capacitance x potential difference

Q = C ΔV

Final charge will remain unchanged

Final charge = C ΔV

Final capacitance = C/2

Final potential difference = charge / capacitance

= C ΔV /  C/2

= 2 ΔV

Potential difference is doubled after the pates are further separated.

6 0
3 years ago
Study the following reaction carefully. What classification should this reaction have?
Mariulka [41]

Answer:

Synthesis reaction

Explanation:

Synthesis reaction: two or more compounds combine to form one.

A + B → C

Decomposition reaction: one compound forms two or more.

C → A + B

Single replacement reaction: an element in one compound is replaced with another element.

AB + C → AC + B

Double replacement reaction: elements in two compounds replace each other.

AB + CD → AC + BD

6 0
3 years ago
Read 2 more answers
True or false. A convection current is the circular motion of a fluid caused by the rising of heated fluid
xz_007 [3.2K]
True that is what a convection current is
7 0
3 years ago
Uma wants to recreate the discovery of superconductivity. Which describes the materials needed?
zaharov [31]

Answer:

B)a tool to drop temperatures, mercury, an electric current, and a tool to measure resistance

7 0
2 years ago
Read 2 more answers
Other questions:
  • The energy of a photon of light emitted by an electron equals the
    11·1 answer
  • How is a wavelength measured in a compressional wave?
    13·1 answer
  • A student uses a spring with a spring constant of 130 N/m in his projectile apparatus. When 56 J of
    15·1 answer
  • Cool the matter back down to a solid state. How does its shape compare to its original shape?Why? *
    8·1 answer
  • -) Given that 1 inch = 0.0254 m, 1 mile = 1760 yards and 1 yard = 36 inches. Convert 5
    6·1 answer
  • You are riding in a train that is traveling at a speed of 120km /h how long will it take to travel 950 km
    13·1 answer
  • Given the word equation below:
    10·1 answer
  • Fill in the blank.
    8·2 answers
  • If a boat and its riders have a mass of 1100 kg and the boat drifts in at 1.3 m/s how much work does Sam do to stop it
    8·1 answer
  • How are atoms in a molecule held together?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!