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igor_vitrenko [27]
2 years ago
14

In a compressional wave, when the particles are far apart, what is the part known as

Chemistry
1 answer:
mixas84 [53]2 years ago
3 0

Answer:

The answer is: <em>"Rarefactions"</em>

Explanation:

In a longitudinal wave, particles of the medium vibrate in a direction that is parallel to the direction that the wave travels. Places where particles of a medium crowd closer together are called compressions, and places where the particles spread farther apart are called rarefactions.

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how many moles of water are in 1.23 x 10^18 water molecules? I need the answer in scientific notation ?
Ann [662]

Answer:

Moles=2.04×10^(-6)

Explanation:

No. Of moles=no. Of particles/ Avogadro's no

(Where no. Of particles may be atoms molecules or compounds)

Moles=1.23×10^18/6.022×10^23

Moles=0.204×10^(-5)

Moles=2.04×10^(-6)

8 0
3 years ago
A chemist weighed out 19.9 g of aluminum. Calculate the number of moles of aluminum she weighed out.
vodomira [7]
Aluminum is 26.982 grams per mole, so 26.982/19.9 will give you the moles 1.3558794
3 0
3 years ago
List the factor on which Ka of a weak acid depends​
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8 0
3 years ago
PLZ HELP
shusha [124]
Use the equation for density :
Density = mass / volume
Density = 120 / 480
Density = 0.25

5 0
3 years ago
Read 2 more answers
Indicate what happens to the concentration of Pb2+ in each half cell
Taya2010 [7]

Answer:

Your questions requires diagrams of the cell to get which one is on the left or right. However, see the attached file below

The correct answer is (d) the left half-cell will decrease in concentration; and the right half-cell will increase in concentration.

Explanation:

The concentration of the Pb2+ increases in the oxidation half cell while the concentration of the Pb2+ decreases in the reduction half cell during the reaction.

In the Left Beaker (Left half cell), their is less concentration

Pb(s) ---> Pb2+(aq) + 2 e- Concentration of Pb2+(aq) increase ; Electrons going out from this side

In the Right Beaker (right half cell), their is more concentration

Pb2+(aq) + 2 e- ---> Pb(s) Concentration of Pb2+(aq) decrease ; Electrons coming in to this side

Electrons will flow from Left to Right direction.

3 0
3 years ago
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