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
Bumek [7]
4 years ago
7

Describe the function of a cilia.

Chemistry
2 answers:
MrRa [10]4 years ago
4 0

Answer:

hope it helps..

Explanation:

'Motile' (or moving) cilia are found in the lungs, respiratory tract and middle ear. ... These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation.

SCORPION-xisa [38]4 years ago
3 0

Answer: to keep airway clear of mucus and dirt allowing us to breathe easy

Explanation:

You might be interested in
Fossil fuels are what resource
just olya [345]

Answer:

Fossil fuels are hydrocarbons, primarily coal, fuel oil, or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.

Explanation:

fossil fuels are continually formed by natural processes, they are generally classified as non-renewable resources because they take millions of years to form, and known viable reserves are being depleted much faster than new ones are generated.

6 0
4 years ago
3O2(g) 2O3(g); Keq = 1
zavuch27 [327]
It is the third one this is simple


8 0
4 years ago
In each reaction box place the best reagent and conditions from the list below benzene 3 boxes
den301095 [7]

Answer : The correct answer is 1) AlCl₃ - CH₃Cl 2) HNO₃ -H₂SO₄ at room temperature 3) Fuming HNO₃ -H₂SO₄ at 90-100 ⁰ C heat .

I think this reaction is forming 2,4,6- trinitrotoluene from benzene, since the product is not mentioned. Following are the steps to convert Benzene to 2,4,6 trinitrotoluene .

Step 1: Conversion of Benzene to Toluene .

Benzene can be converted to toluene by Friedel Craft Alkylation of benzene . In this reaction reagent AlCl₃ and Ch3Cl is used . Electrophile CH³⁺ is produced which attached on carbon of benzene and formation of Toluene and HCl occur.

Benzene     \frac{AlCl3}{Ch3Cl}>   Toulene + HCl

Step 2 : Conversion of Toluene to dinitrotoluene.

Dinitritoluene is prepared from toluene by Nitration . This reaction uses Electrophilic substitution mechanism . The reagents used are HNO₃ and H₂SO₄ at room temperature . These reagents produces NO₂⁺ ( nitronium ion ), a electrophile which attacks on C2 and C4 Carbon atoms of Toluene.

Toluene Tolune   \frac{HNO3 -H2SO4}{30-40 degree C} ->  2,4- dinitrotoluene

Step 3) Conversion of Dinitro toluene to trinitrotoluene.

This reaction is extended nitration of toluene . Further nitration is done in extreme condition . The temperature of reaction is increased to 90- 100 ⁰ C . Due to which there is more production of NO²⁺ ion occurs from HNO₃ -H₂SO₄ and they attack on C6 carbon atom of dinitrotoluene which forms 2,4,6- trinitrotoluene.

Dinitrotoluene 2,4 -dinitrotoluene   \frac{fuming HNO3-H2So4}{90-100 C} ->  2,4,6-trinitrotoluene.

So over all reaction uses three reagents in order :

Benzene  \frac{AlCl3}{CH3Cl}  -> Toluene  \frac{HNO3-H2So4}{room temp}  -> 2,4-dinitrotoluene  \frac{Fuming HNO3 -H2SO4}{Heating at 90-100 C}  -> 2,4,6-trinitrotoluene .

3 0
4 years ago
Read 2 more answers
The rate constant for a certain reaction is k = 4.50×10−3 s−1 . If the initial reactant concentration was 0.400 M, what will the
SIZIF [17.4K]

<u>Answer:</u> The concentration of reactant after the given time is 0.0205 M

<u>Explanation:</u>

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}

where,  

k = rate constant  = 4.50\times 10^{-3}s^{-1}

t = time taken for decay process = 11.0 min = 660 s  (Conversion factor:  1 min = 60 s)

[A_o] = initial amount of the reactant = 0.400 M

[A] = amount left after decay process =  ?

Putting values in above equation, we get:

4.50\times 10^{-3}s^{-1}=\frac{2.303}{660s}\log\frac{0.400}{[A]}

[A]=0.0205M

Hence, the concentration of reactant after the given time is 0.0205 M

4 0
3 years ago
Why is earth’s interior layered?
leonid [27]

This is due to the different properties of the depth of the earth. The interior of the earth is made of heavier metals such as nickel and is hotter than the upper layers. The great pressure in these deep depths keep the elements from melting even at very high temperatures. The upper layers are made up of lighter elements such as iron and magnesium - and are less dense. These layers experience less pressure and temperatures than the deep interiors. Therefore their properties is a bit different. This also allows these layers to be semi-plastic than the soil core.

5 0
3 years ago
Other questions:
  • Write a mechanism for the bromination of acetanilide with bromine in acetic acid. Be as complete as possible and include all rel
    6·1 answer
  • A ___alcohol has a OH radical bonded to a terminal carbon atom.
    13·2 answers
  • Write the empirical formula for C6H6
    14·2 answers
  • Which of the following cycles does not involve living organisms?
    12·2 answers
  • 46.
    13·1 answer
  • "a sample of helium gas at 27.0 °c and 4.20 atm pressure is cooled in the same container to a temperature of -73.0 °c. what is t
    6·1 answer
  • Which best describes a chemical reaction that follows the law of conservation of matter?
    13·1 answer
  • Hydrogen’s emission spectrum includes a line of violet light that has a frequency of 7.31 x 1014 Hz. What is the energy (in joul
    11·1 answer
  • How are photosynthesis and cellular respiration related?
    10·1 answer
  • Two<br>moin tunetons of carbohydraus​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!