A police siren passes you with a frequency of 5000 Hz. Which correctly describes the sound wave after the police car passes you? The speed of sound is 340 m/s.

A. siren wavelength of 0.0068 meters, frequency you hear = less than 5000 Hz

B. siren wavelength of 0.0068 meters, frequency you hear = 5000 Hz

C. siren wavelength of 0.0068 meters, frequency you hear = more than 5000 Hz

D. siren wavelength of 5000 meters, frequency you hear = 5000 Hz

35.5 g of tetrachloroethane is added if 15 grams of chlorine is used with excess [tex]C_2H_2[/tex].

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is  the same for both the reactants and the products.

Balanced chemical equation:

[tex]2Cl_2 (g) + C_2H_2 (g)[/tex] → [tex]C_2H_2Cl_4(l)[/tex]

In your case, 2 moles of chlorine gas are needed to produce 1 mole of tetrachloroethane, which implies that there's a 2:1 mole ratio between the two.

Calculating the mass of tetrachloroethane.

[tex]m[/tex][tex]C_2H_2Cl_4(l)[/tex] = [tex]15 g[/tex] [tex]Cl_2 (g)[/tex] X [tex]\frac{2 mol \;of \;Cl_2}{70 g \;Cl_2}[/tex] X [tex]\frac{1 mol \;of \;C_2H_2Cl_4(l)}{2 mol \;Cl_2}[/tex] X [tex]\frac{167.8 g \;C_2H_2Cl_4(l))}{1 mol \;C_2H_2Cl_4}[/tex]

[tex]C_2H_2Cl_4(l)[/tex] = [tex]17.75 g[/tex]

[tex]C_2H_2Cl_4(l)[/tex] = [tex]35.5 g[/tex]

Hence, 35.5 g of tetrachloroethane is added if 15 gram of chlorine is used with excess [tex]C_2H_2[/tex]

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Answer:

P2=672.1 torr

Explanation:

use the formula P1V1=P2V2, plug in the numbers so your equation should look like this (763.9)x(98.8)=P2(112.3) answer should be P2=672.1 torr

The resultant pressure of the sample of gas is 510.9 torr.

Relation between the pressure and volume will be represented by the ideal gas equation PV = nRT, and for the given question required equation is:

P₁V₁ = P₂V₂, where

P₁ & V₁ are the pressure and volume of initial sample.

P₂ & V₂ are the pressure and volume of final sample.

On putting values from the question to the equation, we get

P₂ = (768.6)(93.2) / (140.2) = 510.9 torr

Hence resultant pressure is 510.9 torr.

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The mass of iron (III) oxide that will be produced would be 22.1 grams

From the equation of the reaction:

[tex]3KOH + Fe(NO_3)_3 --- > 3KNO_3 + Fe(OH)_3[/tex]

The mole ratio of iron (III) nitrate to iron (III) hydroxide is 1:1.

Mole of 50 g iron (III) nitrate = 50/241.86 = 0.207 moles

Equivalent mole of iron (III) hydroxide = 0.207 moles

Mass of 0.207 moles iron (III) hydroxide = 0.207 x 106.87 = 22.1 grams

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Answer:

Hello there! I believe the answer you need is d= M/V. Have a good day,night or miday. Sorry if I'm wrong.

The moles of phosphorous which are present in 750 grams of phosphorous is 24.27 moles.

Relation between the mass and moles of any substance will be represented as:

Moles of phosphorous which are present in 750 grams will be calculated as:

n = 750g / 30.9g/mol = 24.27 moles

Hence the resultant moles of phosphorous is 24.27 moles.

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Answer:Expert-verified answer

n(NaOH) = 0.037 moles of NaOH. HOPE THIS HELPS!!Apr 20, 2020

Explanation:

The correct type of heat transfer for A, B, and C are conduction, convection and radiation respectively.

Heat transfer is a process in which amount of heat will be transferred from one object to any other object by various means.

Hence at A, B and C heat transfer done through conduction, convection and radiation respectively.

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Answer:

heat transfer for A, B, and C are conduction, convection and radiation respectively.

hope you like it

Based on their pOH values, the difference in [OH– ] concentration between point A and point B is 10^6.

The pH is determined by the concentration of Hydrogen ions [H+]. The higher the concentration of H+ ions, the lower the pH of a substance. If the concentration of H+ is greater than OH-, the material is acidic, i.e. the pH value is less than 7

In this case, the formula for this will be:

[tex]pH= -log[H+][/tex]

So we have:

[tex][OH]= 14-1= 10^{-13}\\[OH] = 14-7=10^{-7}[/tex]

Therefore, the difference in [OH– ] concentration between point A and point B is 10^6.

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Answer: 10^6

Explanation: edge2023

#a

#b

#c

This is reversible reaction

Answer:

Since the water is heavier, it displaces the lighter ice,

Explanation:

hope that helps

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

According to above statement, HCl ( Hydrochloric acid ) is a strong acid, which when mixed in water dissociates complete in water to form H+ and Cl- ions that means 100% dissociation. but acids weaker than HCl shows relatively less dissociation.

That is less than 100% dissociation when mixed in water ~

This information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

Dissociation is defined as the breaking up of a compound into simpler constituents or components or parts. Ionic compounds dissociates in the water solution. Stronger acids have 100% ability to dissociate.

So we can conclude that this information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

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Answer:

1.94 Moles H2O

Explanation:

1 grams Water to mol = 0.05551 mol

so 35 x 0.05551 = 1.9427952271627198, which rounds to 1.94 moles

1 mole of any gas at standard temperature and pressure (273 K and 1 atm) occupies a volume of 22.4 L.

Answer:

2.059800664 x 10^47 moles

Explanation:

When servers break state, county, or municipal alcohol laws when serving alcohol, the server could be fined and the establishment could lose its liquor license.

This is defined as governmentally issued permit for the service of alcohol in an area over a period of time.

When alcohol law is broken, there may be a fine or the revoking of the liquor license.

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Answer:

Element are substances made up of the same kind of atoms

If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink.

Osmosis is the net movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

This may sound odd at first, since we usually talk about the diffusion of solutes that are dissolved in water, not about the movement of water itself.

If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink.

In an isotonic environment, there is no net water movement, so there is no change in the size of the cell.

When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.

Therefore If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink.

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Boyle's law gave the relation between the pressure and the volume of the gas. The equation can be represented as PV = constant (T and n are constant).

Boyle's law gave the inverse relationship between the pressure and the volume of the hypothetical ideal gas when the moles and the temperature are constant. It can be shown as PV = constant.

The volume of the gas can be compressed by increasing the pressure, and the volume of the gas can be expanded by decreasing the pressure of the gas.

Therefore, Boyle's law gave the PV = constant.

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Answer:

24 oral syringes

Explanation:

Explanation:

because the energy it can't be calculated

Radioactive decay of a nucleus is common in nuclei that are heavy

A radioactive nucleus is a nucleus that decays by spontaneous disintegration. It is common in Many nuclei that have  atomic number above 82.

Hence, radioactive decay of a nucleus is common in nuclei that are heavy and are capable of breaking apart.

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Answer:

Hydronium (H3O+) ions

Explanation:

Acids increase the concentration of hydronium ions in water and thus lower the pH (make it more acidic)

Answer:

The answer for this question is Hydrogen Ions

Answer:

I Would Go Back To When There Were Cavemen Because I Would Love To See How Things Went On And How Women/Men Handled Themselves

Explanation:

Why Would I Travel To When Cavemen Were Here?

Because I Have A Fuji Film And I Would Love To Come Back To This Day And Show Everyone That Cavemen/Dinosoars ARE Real

This question involves the concept of binding energy.

The amount of energy released by this reaction is "a) 1.22 x 10¹³ m/s".

The amount of energy that is released during the radioactive decay of any element is known as binding energy. This can be given by using the following formula:

[tex]E=\Delta mc^2[/tex]

where,

Therefore,

E = (1.35 x 10⁻⁴ kg)(3 x 10⁸ m/s)²

E = 1.22 x 10¹³ m/s

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Answer:

I'm pretty sure by type and size (I might be wrong).