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
Fofino [41]
3 years ago
6

How does sound wave travel through air

Chemistry
1 answer:
Alina [70]3 years ago
7 0

Sound is made when air molecules. Vibrate and move in a wave pattern, so sound moves in waves of compressions and refractions (expansion).

Hope this helps! :)

You might be interested in
How to calculate the mass of fraction of all elements in calcium carbonate<br>(CaCO3)​
MrMuchimi

Answer:

I have made it in above figure hope it helps

7 0
3 years ago
Which of he following is a secondary alkanol?
hodyreva [135]

Answer: Thus CH_3CH(OH)CH_3 is a secondary alkanol.

Explanation:

Alkanol are compounds which contains carbons bonded by single bonds and contains hydroxy (-OH) as functional group.

Primary alkanol are those compounds which contain hydroxyl group attached a carbon which is further attached to a single carbon atom. Example: CH_3CH_2CH_2OH and CH_3CH_2CH_2CH_2OH

Secondary alkanol are those compounds which contain hydroxyl group attached to a carbon which is further attached to two more carbon atoms.Example: CH_3CH(OH)CH_3

Tertiary alkanol are those compounds which contain hydroxyl group attached to a carbon which is further attached to three more carbon atoms. Example: C(CH_3)_3OH

Thus CH_3CH(OH)CH_3 is a secondary alkanol.

5 0
3 years ago
A solid piece of aluminum (51.0 g) was added to a solution of sodium hydroxide (84.1 g) in water, A balanced equation for this r
EastWind [94]
M_{Al}=26,98\frac{g}{mol}\\&#10;m=51g\\\\&#10;n=\frac{m}{M_{Al}}=\frac{51g}{26,97\frac{g}{mol}}\approx1,89mol\\\\\\&#10;M_{NaOH}=39,4\frac{g}{mol}\\&#10;m=84,1g\\\\&#10;n=\frac{m}{M_{NaOH}}=\frac{84,1g}{39,4\frac{g}{mol}}\approx2,14mol

<span>2 NaOH(aq)+ 2 Al(s)+ 2 H</span>₂<span>O → 2 NaAlO</span>₂<span>(aq)+ 3 H</span>₂<span>(g)
</span>  2mol      :     2mol           :                                  3mol
2,14mol   :     1,89mol      :                                  2,835mol
remains         completely consumed
2,14-1,89=0,25mol


A) Al

B)  

M_{NaOH}=39,4\frac{g}{mol}\\&#10;n=0,25mol \Rightarrow \ \ \ m=n*M_{NaOH}=0,25mol*39,4\frac{g}{mol}=9,85g

C)
n=2,835mol\\&#10;M_{H_{2}}=2,02\frac{g}{mol} \Rightarrow \ \ \ m=n*M_{H_{2}}=2,835mol*2,02\frac{g}{mol} \approx 5,73g

7 0
3 years ago
Who found the periodic table​
Whitepunk [10]

Answer: Dmitri Mendeleev

Explanation: He invented it, since he wanted to arrange all the elements.

5 0
3 years ago
What can you infer if the fossil of a marine organism is found in an area that is now dry land?
Deffense [45]

Answer:

<em>Fossils also help us to infer why dinosaurs and other organisms became extinct. Fossils tell us that there was a mass extinction at the time of the dinosaurs. They died out about 65 million years ago, along with more than half of all the other animal and plant species. ... Without plants, dinosaurs could not survive.</em>

Explanation:

<em><u>hope</u></em><em><u> it</u></em><em><u> will</u></em><em><u> help</u></em><em><u> you</u></em><em><u> have</u></em><em><u> a</u></em><em><u> great</u></em><em><u> day</u></em><em><u> bye</u></em><em><u> and</u></em><em><u> Mark</u></em><em><u> brainlist</u></em><em><u> if</u></em><em><u> the</u></em><em><u> answer</u></em><em><u> is</u></em><em><u> correct</u></em>

<em><u>kai6417</u></em>

<em><u>#</u></em><em><u>c</u></em><em><u>a</u></em><em><u>r</u></em><em><u>r</u></em><em><u>y</u></em><em><u> </u></em><em><u>on </u></em><em><u>learning</u></em>

4 0
2 years ago
Other questions:
  • What mass of carbon dioxide could be made from 100 tonnes of calcium carbonate?
    12·1 answer
  • What is the order, from simplest to most complex, for the classification of matter
    14·1 answer
  • If the reaction produced 15.5 g CO2, how many grams of heptane were burned?
    13·1 answer
  • Apply the appropriate word to the definition indicated please! Not all words have to be used
    11·2 answers
  • 11. A new compound has just been developed. Its formula is:
    14·1 answer
  • In a given substance, as the temperature of a substance increases, the volume of that substance _____.
    7·1 answer
  • Which species contains the lowest number of electrons
    6·1 answer
  • HELPPPP POR FAVORJDSJSJKDKDKDKKDKDK
    5·1 answer
  • Pick the compound with a higher percent lonic character than KCI.<br><br> (MgF ; SrCl ; NaF ; CaBr)
    15·1 answer
  • Imagine that you are a water molecule in a group of many
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!