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dem82 [27]
3 years ago
15

A police car is approaching the corner. Explain what happens to the frequency of sound as it draws closer. What will you hear?

Chemistry
1 answer:
barxatty [35]3 years ago
8 0
The frequency stays the same it just gets louder
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When these bond to make ccl4, what is the shape of a ccl4 molecule? linear circular tetrahedral trigonal planar
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Its tetrahedral since there's four chlorine molecules around carbon
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4 years ago
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a seismic station in gainesville florida recorded the arrival of the first p wave at 1:30:00 and the first s wave from the same
kvasek [131]

Answer:

4 hours and 30 minutes

Explanation: because first wave was 1:30:00 and the second is 1:34:30

1:30:00 goes into 1:34:30 4 hours and 30 minutes.

6 0
2 years ago
A window washer does not want to change her position.
Mrrafil [7]
The answer should be C) Balanced because if she doesn't want to change spots/move, than she doesn't want to be in motion which means she wants to stay still and that would be balanced.
5 0
4 years ago
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Which statement is true for gases, but not for solids or liquids? A. The particles are in motion. B. The particles rarely touch
andriy [413]

Answer:

B. The particles rarely touch each other.

Explanation:

The particles of gases are far apart, so they rarely touch each other. The particles of liquids can slide past each other, and the particles of solids are locked in place next to each other.

In all three states of matter, the particles

  • Have a definite volume
  • Are in constant motion
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7 0
3 years ago
In order to prepare very dilute solutions, a lab technician chooses to perform a series of dilutions instead of measuring a very
NeTakaya

Answer: 5.70\times 10^{-6}M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n= moles of solute

Given : 0.360 g of KNO_3 is dissolved in 500 ml of solution.

Moles=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{0.360g}{101g/mol}=3.56\times 10^{-3}mole  

V_s = volume of solution  = 500 ml

Molarity=\frac{3.56\times 10^{-3}\times 1000}{500}=7.12\times 10^{-3}M

According to the neutralization law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 7.12\times 10^{-3}M

V_1 = volume of stock solution = 10.0 ml

M_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 500.0 ml

7.12\times 10^{-3}M\times 10.0=M_2\times 500.0

M_2=1.42\times 10^{-4}M

b)  On further dilution

M_1 = molarity of stock solution = 1.42\times 10^{-4}M

V_1 = volume of stock solution = 10.0 ml

M_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 250.0 ml

1.42\times 10^{-4}M\times 10.0=M_2\times 250.0

M_2=5.70\times 10^{-6}M

Thus the final concentration of the KNO_3 solution is 5.70\times 10^{-6}M

4 0
3 years ago
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