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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! :)

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When both –NH2 and –COOH replace hydrogen atoms on the same carbon atom, a(n) ____ is formed. a. amine c. carboxylic acid b. ami
Mice21 [21]

-NH_{2} represents amine functional group and COOH represents carboxylic acid functional group. When these both functional groups are substituted onto a single carbon atom, then amino acid is formed.

The organic compound consists of -NH_{2} functional group and COOH functional group with a side chain is said to be an amino acid.

A: amine group is -NH_{2}.

C: carboxylic acid  group is COOH

B: amino acid represents -NH_{2} functional group and COOH functional group which are substituted onto a single carbon atom.

D: carbohydrate:  the general formula of carbohydrate is (CH_{2} O)_{x}.

Hence, amino acid is the correct answer.





4 0
3 years ago
A cube of ice melts in a beaker to form 10 g of water. What is the best estimate of the mass of the ice cube?
prohojiy [21]
I think the answer is 10g
when you freeze a specific amount of water into an ice cube, only the form and the density is changed, while the mass will be pretty much the same. 
Probably the mass of the melted water will be a little bit less than the cube (if count the mass that released to the air) , but the amount will NOT BE SIGNIFICANT.
6 0
3 years ago
Read 2 more answers
Are these gases lighter than or denser than air? How can you tell?
kotegsom [21]
Some Gases are lighter than air
Remember,Air is a mixture of gases
So you cant tell!
It depends on the gas
Hope i helped
3 0
3 years ago
Assuming fixed shape when heated?​
Fittoniya [83]

Answer:

Assuming that the atmospheric pressure is standard, the temperature will rise steadily until it reaches 100°C

3 0
3 years ago
Where would (aq) (s) go in Cr(NO3)3+K3PO4
Ivenika [448]

Answer:

Cr(NO3)3 (aq) +K3PO4 (s)

Explanation:

7 0
3 years ago
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