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beks73 [17]
3 years ago
10

The particles of longitudinal waves vibrate by pushing together and moving apart parallel to the direction in which the wave tra

vels. The place on the wave that is pushed closest together is called the and the place that is pulled farthest apart is called the
Chemistry
1 answer:
pashok25 [27]3 years ago
4 0

Answer:

The question should be correctly written as:

The particles of longitudinal waves vibrate by pushing together and moving apart parallel to the direction in which the wave travels. The place on the wave that is pushed closest together is called the _____ and the place that is pulled farthest apart is called the _______

The answer to the question is:

The particles of longitudinal waves vibrate by pushing together and moving apart parallel to the direction in which the wave travels. The place on the wave that is pushed closest together is called the <u>compressions</u> and the place that is pulled farthest apart is called the <u>rarefactions.</u>

Explanation:

Longitudinal waves are waves consisting of a periodic disturbance or vibration in which the displacement of the individual particles of the medium is parallel to the direction of wave travel. In other words, longitudinal waves are waves that move in the same direction, or are parallel to their source. Examples of longitudinal waves include: sound waves. ultrasound waves. seismic P-waves.

A compression is where the particles of the medium are closest together, it happens when molecules are forced together. Compression is like the crest or peak of the wave.

Rarefaction occurs when molecules are given extra space and allowed to expand. Rarefaction is the opposite of compression and is where the particles are stretched apart and they are regions of low pressure.

A demonstration of compression and rarefaction can be seen in sound waves, where, sound waves can be regarded as a succession of compressions followed by rarefactions.

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How many grams of silver chromate will precipitate when 150. mL of 0.500 M silver nitrate are added to 100. mL of 0.400 M potass
sergiy2304 [10]

The amount of silver chromate that precipitates after addition of solutions is 12.44 g.

Number of moles:

The number of moles is the product of molarity of the solution and its volume. The formula is expressed as:

Moles = Molarity x Volume

Calculations:

Step 1:

The molecular formula of silver nitrate is AgNO3. The number of moles of silver nitrate is calculated as:

Moles of AgNO3 = 0.500 M x (150/1000) L

= 0.075 mol

Step 2:

The molecular formula potassium chromate is K2CrO4. The number of moles of potassium chromate is calculated as:

Moles of K2CrO4 = 0.400 M x (100/1000) L

= 0.04 mol

Step 3:

The balanced chemical reaction between AgNO3 and K2CrO4 is:

2AgNO3 + K2CrO4 -----> Ag2CrO4 + 2KNO3

The required number of moles of K2CrO4 = 0.075 mol/2 = 0.0375 mol

The given number of moles of K2CrO4 (0.04 mol) is more than the required number of moles (0.0375 mol). Therefore, AgNO3 is the limiting reagent.

Step 4:

According to the reaction, the molar ratio between AgNO3 and Ag2CrO4 is 2:1. Hence, the number of moles of Ag2CrO4 formed is 0.0375 mol.

The molar mass of Ag2CrO4 is 331.74 g/mol.

The mass of Ag2CrO4 is calculated as:

Mass = 0.0375 mol x 331.74 g/mol

= 12.44 g

Learn more about precipitation here:

brainly.com/question/13859041

#SPJ4

6 0
2 years ago
What percentage of the formula mass of Na2SO4 does sodium constitute?
Ganezh [65]

Molar mass of Na2SO4*10H2O is 322.1949 g/mol

4 0
3 years ago
You are running a lemonade stand with your friend. You prepared 10 liters of 0.7 molarity lemonade, but your friend did online r
mr Goodwill [35]

Answer:

add 7.5L of water

Explanation:

M1×V1=M2×V2

M is molarity, V is volume

0.7 × 10 = 0.4 × V2

V2= 17.5L

vol. of water to add= 17.5 - 10 = 7.5L

7 0
3 years ago
HURRY HELP 10 POINTS ILL GOVE BRAINLIEST I HAVE TO PASS PICTURE PROVIDED
kramer

Answer:

C₃H₄O₄

Explanation:

In order to get the empirical formula of a compound, we have to follow a series of steps.

Step 1: Divide the percent by mass of each element by its atomic mass.

C: 34.6/12.01 = 2.88

H: 3.9/1.01 = 3.86

O: 61.5/16.00 = 3.84

Step 2: Divide all the numbers by the smallest one, i.e., 2.88

C: 2.88/2.88 = 1

H: 3.86/2.88 ≈ 1.34

O: 3.84/2.88 ≈ 1.33

Step 3: Multiply all the numbers by a number that makes all of them integer

C: 1 × 3 = 3

H: 1.34 × 3 = 4

O: 1.33 × 3 = 4

The empirical formula is C₃H₄O₄.

5 0
3 years ago
Could some some one help with 2 4 5 7 8​
sesenic [268]

Answer:

For number 2, your answer is C.

Explanation:

The nucleus is positively charged because the proton is positive and a neutron is neutral. An electron has a negative charge.

6 0
2 years ago
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