Which sentence in the section "Measuring Sonic Booms" BEST supports the conclusion that sonic booms are not dangerous?

A. Air molecules are pressing down on us all the time.

B. However, we do not feel them because our bodies are used to the pressure.

C. Sonic booms pack air molecules tightly together, so this means the air pressure is greater.

D. Most structures in good condition can withstand sonic booms.
Next

Answer: no

Explanation: theres a chance but generally no because there can be different substances in different amounts which can have similar volumes

solids are similar to liquids in that both are condensed states, with particles that are far closer together than those of a gas. However, while liquids are fluid, solids are not. The particles of most solids are packed tightly together in an orderly arrangement. The motion of individual atoms, ions, or molecules in a solid is restricted to vibrational motion about a fixed point. Solids are almost completely incompressible and are the densest of the three states of matter.

Answer:

17 kJ/mol

Explanation:

got it on edge

The given  statement "Gaseous ammonia reacts with dioxygen gas to produce nitrogen monoxide gas and water" is A. true because This is an example of a chemical reaction called an oxidation-reduction reaction, which is a type of chemical reaction that involves the transfer of electrons between two species.

In this reaction, the oxygen in the dioxygen gas acts as an oxidizing agent, taking electrons from the ammonia. The ammonia in turn acts as a reducing agent, providing electrons to the oxygen. As a result, the ammonia is oxidized, producing nitrogen monoxide and water, which are the products of this reaction.

This reaction can be written as follows: 4NH3 + 5O2 --> 4NO + 6H2O.

The oxidation-reduction reaction between gaseous ammonia and dioxygen gas produces nitrogen monoxide gas and water as products, making the statement  A. true.

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The concentration of hydrogen ions in the solution of pH 2.0 is 0.01 mol/L

The pH of a solution is a measure of the concentration of hydrogen ions, H+ in the solution.

The relationship between pH and the concentration of hydrogen ions is given by the equation:

pH = -log[H+]

Rearranging the equation gives:

[H+] = 10^(-pH)

Substituting pH = 2.0 into this equation gives:

[H+] = 10^(-2.0)

[H+] = 0.01 mol/L

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Answer: the answer is D which is “Both processes involve the folding of the cell membrane”

Answer:

24.3

Explanation:

Two containers of gas have the same volume, temperature and pressure. One container has a sample of oxygen gas having a mass of 3.95g. The other container has a gas with a mass of 2.99g. Determine the molar mass of the gas in the second container.

O2 has a molar mass of 16 X 2 =32

the number of moles for O2 is the weight divided by the molar mass or, but since the two container have the same P,V, AND T they have the same number of moles since

PV =nRT

SO

the weight of the gas in the second container divided by its molar mass =

0.123

or

2.99/? = 0.123

so

? = 2.99/o.123 = 24.3

Answer:

open system im also on this quiz

Explanation:

Answer:c

Explanation:

A buffer solution is defined as a solution that resists a change in pH when a small amount of acid or base is added to it. the buffer capacity of the solution will prevent the pH from changing too much.

The buffer solution containing nitrous acid, HNO2, and potassium nitrite, KNO2, will experience the following changes when a small amount of HClO4 is added to it: The HClO4 added to the buffer solution will react with the potassium nitrite, KNO2, to form the salt, KClO4.T

he HNO2 will be converted to nitric acid, HNO3, by the HClO4.The HNO3 formed in the previous step will react with the potassium nitrite, KNO2, to form nitric oxide, NO, and potassium nitrate, KNO3.The net effect of adding HClO4 to the buffer solution containing nitrous acid, HNO2, and potassium nitrite, KNO2, will be to shift the buffer solution to a more acidic pH range.

However, the buffer capacity of the solution will prevent the pH from changing too much.

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The signs of ΔH° and ΔS° must be positive and negative, respectively, for a reaction to be spontaneous at high temperatures but nonspontaneous at low temperatures.

The spontaneity of a reaction is determined by the Gibbs free energy change (ΔG). The Gibbs free energy change is related to the enthalpy change (ΔH) and entropy change (ΔS) of the system through the equation ΔG = ΔH - TΔS, where T is the temperature in Kelvin.

For a reaction to be spontaneous at high temperatures but nonspontaneous at low temperatures, the ΔH term should dominate at high temperatures, driving the reaction towards spontaneity. This implies that ΔH must be positive, indicating an endothermic reaction. This is because the positive ΔH term counteracts the negative TΔS term at high temperatures, allowing the reaction to proceed.

Similarly, the ΔS term should dominate at low temperatures, making the reaction nonspontaneous. For this to occur, ΔS must be negative, indicating a decrease in the system's entropy during the reaction. The negative ΔS term overwhelms the positive ΔH term at low temperatures, resulting in a positive ΔG and nonspontaneity.

Therefore, the signs of ΔH° and ΔS° must be positive and negative, respectively, for the described behavior of spontaneity at high temperatures and nonspontaneity at low temperatures.

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The valency of iron (Fe) in this equation is 2

While, the valency of chlorine is 1

Therefore, we know that iron wants to give away 2 electrons to attain octet configuration, and chlorine wants to get an electron to attain octet configuration.

Also while find the products the number of atoms is similar to the oppostie valency

Fe = 1 atom , Cl = 2 atoms

Which will form FeCl₂

Happy to help :)

If you need any help pls ask

Answer:

8

Explanation:

Rocky planets:

Mercury

Venus

Earth (We are here)

Mars

Gas giants:

Jupiter

Saturn

Uranus

Neptune

Hi!there are 8 planets in the solar system they are=

(there was one more planet Pluto but in 2006 scientists said that Pluto was not a planet but a drawf planet)

Answer:

Question:

A spring with a spring constant of 30 N/m is stretched 0.2 m from its equilibrium position. How much work must be done to stretch it an additional 0.1 m?

Elastic Potential Energy:

The work that needs to be done by any object is a form of energy. The work can be defined in terms of the work-energy theorem, which states that the work can either be the difference in the kinetic energy of a system or the difference in the potential energy of a system. There is a special type of potential energy reserved exclusively for

Answer:

based on texture/ feel, oder/smell, melting/boiling point

Explanation:

Answer:

Smell it, drink it, throw it at someone.

Explanation:

If none of that hurts or kills anyone, you can mark everything that would off the list.

26 g of chlorine must have reacted with the 29-g sample of potassium in order to form 55 g of potassium chloride.

In order to calculate the amount of chlorine that must have reacted with a 29-g sample of potassium to form 55 g of potassium chloride, you need to use the following equation:

Solving for x, you get x = 26 g. Therefore, 26 g of chlorine must have reacted with the 29-g sample of potassium in order to form 55 g of potassium chloride.

Potassium chloride (KCl) is an ionic compound composed of potassium and chlorine, with a chemical formula of KCl. Potassium chloride is a white crystalline solid that is highly soluble in water.

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Ka = [H+] [X-] ÷ [HX] is the acid dissociation constant for an acid at equilibrium.

Chemical equilibrium is the condition in which no net change in the amounts of reactants and products occurs.

HX(aq) ↔ H+(aq) + X-(aq)

[H+] = [X-]

Ka = [H+] [X-] ÷ [HX]

Hence, Ka = [H+] [X-] ÷ [HX] is the acid dissociation constant for acid at equilibrium.

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The criteria that must be followed for an element to be made are :

A new element is made/discovered when the nuclide of the element has an atomic number that is significantly different from the atomic numbers of existing elements. some the first elements discovered in laboratories are ; curium , americium, and berkelium. with atomic number ( Z ) significantly different from each other

when the new element ( discovered ) element meets the required criteria they can then be added to the periodic table.

Hence we can conclude that the criteria that must be followed for an element to be made are ; Element will have an atomic number ( Z ) that is different from the atomic number of existing elements. and The atomic number of the new element should exist for at least  10⁻¹⁴ s.

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Barred spiral galaxies have a bright linear feature called a bar that straddles the nucleus, with the arms unwinding from the ends of the bar.

This is one key difference from regular spiral galaxies that can describe a barred spiral galaxy efficiently.

Answer:

something cyan colored?

Answer:

19.32 g/cm³

Explanation:

The density will remain the same no matter how many times you cut the gold.  The density is g/cm³ or g/mL.  Density is essentially how many grams 1 mL of a compound weighs.

Answer:

\(\boxed {\boxed {\sf 19.32 \ g/cm^3}}\)

Explanation:

Density is the mass per volume (g/mL or g/cm³). It is an intrinsic property. This means it is not dependent on the amount and all samples of the same substance have the same density.

Therefore, if a piece of gold has a density of 19.32 grams per cubic centimeter and it is cut in half, the two pieces will have the same density.

Answer:

There are various types of proteins with a number of different functions they perform. These functions can include:

Hope this helps!

Answer:

provide structure

transport substances

fight diseases

regulate cell processes

send messages

create movement

Explanation:

'cause i did it edge 2020

Answer:

A reaction in which two or more reactants combine to form only one product is called a synthesis reaction.

Explanation:

The correct formula of the molecule is C4H9O2.

The model of a compound is a representation of the molecule. It gives us an idea of what the molecule looks like as well as its molecular formula.

Looking at the structure of the compound as shown in the model in the question, the correct formula of the molecule is C4H9O2.

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Answer:C4H9O2.

Explanation:

When light is incident on the ion, wavelengths around 500 nm will be absorbed, and the remaining wavelengths will be transmitted or reflected. This provides insight into the electronic structure of the titanium(III) ion and its interaction with light.

The titanium(III) ion, [Ti(H2O)6]3+ in water, absorbs light that is centred around 500 nm. The colour of light absorbed by the ion can be inferred from the visible spectrum of electromagnetic radiation, which ranges from about 400 to 700 nm. Wavelengths around 400-450 nm appear violet, 450-495 nm blue, 495-570 nm green, 570-590 nm yellow, 590-620 nm orange, and 620-700 nm red. Since the titanium(III) ion absorbs light around 500 nm, we can infer that it absorbs light in the green portion of the visible spectrum. Therefore, the titanium(III) ion appears to be a green color.

The absorption of light by compounds can provide insight into the colour of the compound. When light is incident on a compound, certain wavelengths are absorbed, and the remaining wavelengths are transmitted or reflected. The absorbed wavelengths of light depend on the electronic structure of the compound. In the case of the titanium(III) ion, [Ti(H2O)6]3+, it is observed that light centered around 500 nm is absorbed. This means that the electronic structure of the ion allows it to absorb light in the green portion of the visible spectrum. Since the visible spectrum ranges from approximately 400 to 700 nm, it can be inferred that the titanium(III) ion appears to be green in colour. Therefore, when light is incident on the ion, wavelengths around 500 nm will be absorbed, and the remaining wavelengths will be transmitted or reflected. This provides insight into the electronic structure of the titanium(III) ion and its interaction with light.

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Answer: Physical properties, but not in its identity

Explanation:

Physical changes only change the substances physical properties, not the substance’s identity

The effects of volcanic eruption include acid rain and destruction of lives and property.

The term abiotic factors refers to those factors that are non living such as rainfall, topography, etc. The adaptation of organisms in avoiding unfavorable condition due to a change in abiotic factor is hibernation of a snake from September to December.

A volcanic eruption is a sudden outburst of molten magma from the earth's crust. The effects of volcanic eruption include acid rain and destruction of lives and property.

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Answer:

Nvr XD

Explanation:

Answer:

the world may never know

Explanation:

In the trophic pyramid, producers are situated at the bottom part and peak predators at the top part of the pyramid.

Trophic pyramid is a kind of basic structure which gives idea about the relative position of consumers and producers related to the food chain.

According to the trophic pyramid:

Hence, at the top of the pyramid peak predator is present and at the bottom producers are present.

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