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
ELEN [110]
2 years ago
10

Which of the following changes to a pipe would increase the conductance by a factor of 12?

Chemistry
1 answer:
ivanzaharov [21]2 years ago
6 0

C. Tripling the length and reducing the radius by a factor of 2 is the change to a pipe would increase the conductance by a factor of 12.

<u>Explanation:</u>

As we know that the resistance is directly proportional to the length of the pipe and it is inversely proportional to the cross sectional area of the pipe.

So it is represented as,

R∝ l /A [ area is radius square]

So k is the proportionality constant used.

R = kl/A

Conductance is the inverse of resistance, so it is given as,

C= 1/R.

R₁ = kl₁ / A₁

R₂ = kl₂/A₂

R₂/R₁ = 1/12 [∵ conductance is the inverse of resistance]

        = l₂A₁ / l₁A₂

If we chose l₁/l₂= 3 and A₂/A₁= 4 So R₂/R₁= 1/3×4 = 1/12

So tripling the length and reducing the radius by a factor of 2 would increase the conductance by a factor of 12.

You might be interested in
What is the force that accelerates objects towards Earth?
geniusboy [140]
The force that accelerates objects towards Earth is gravity.
6 0
2 years ago
A burning splint will burn more vigorously in pure oxygen than in air because ________. a burning splint will burn more vigorous
GrogVix [38]
A burning splint will burn more vigorously in pure oxygen than in air because <span>oxygen is a reactant in combustion and concentration of oxygen is higher in pure oxygen than is in air.
Oxygen concentration in air is approximately 20%, the rest of are nitrogen, carbon dioxide and other gases. Oxygen is oxidazing reactant, that means oxygen give electrons in chemical reactions.
</span>
6 0
2 years ago
Read 2 more answers
What are the typical properties of covalent substances ?
Lelu [443]
Covalent compounds are compounds that share electrons. They tend to have properties like lower melting points and lower conductivity.
4 0
3 years ago
Which of the following statements is true?
Kazeer [188]
Only one: the nucleus of an atom is made up of protons and neutrons.
Why others are false:
Boiling point of a substance is not dependent on the volume because it’s a intensive property.
During sublimation, a solid changes directly into gas.
Electrons orbit the nucleus of an atom in circular orbits (kinda unsure of this one.)
3 0
2 years ago
Read 2 more answers
Write the net ionic equation for any precipitation reaction that may be predicted when aqueous solutions of calcium iodide and c
Hitman42 [59]

<u>Answer:</u> The net ionic equation is written below.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of calcium iodide and chromium (III) sulfate is given as:

3CaI_2(aq.)+Cr_2(SO_4)_3(aq.)\rightarrow 3CaSO_4(s)+2CrI_3(aq.)

Ionic form of the above equation follows:

3Ca^{2+}(aq.)+6I^{-}(aq.)+2Cr^{3+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)+2Cr^{3+}(aq.)+6I^-(aq.)

As, chromium and iodide ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

3Ca^{2+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)

Hence, the net ionic equation is written above.

8 0
3 years ago
Other questions:
  • Calculate Delta n (change in moles of gaseous substances) for each of the following balanced chemical equations...
    8·1 answer
  • When light strikes a transparent material, most of the light is absorbed or reflected.
    15·2 answers
  • Which two formulas represent compounds
    7·1 answer
  • What is the factor that affects how easily an electron can be removed from an atom?
    13·1 answer
  • Which is true about models in science?
    15·2 answers
  • On the periodic table, in which period is copper?
    11·1 answer
  • Whats the number of moles of O2(g) needed to completely react with 8 moles of CO(g).
    12·1 answer
  • Use the solubility rules from the Lab 4 introduction and your knowledge of qualitative separation schemes from the lab to answer
    14·1 answer
  • A gray whale can travelan average of 120<br> km per day as it migrates.
    6·2 answers
  • What would the empirical formula be for the molecular compound CoH904?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!