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Answer: f = 760 Hz

Explanation:  speed = frequency · wavelength  v = fλ.

frequency f = v/ λ = 380 m/s / 0.50 m = 760 Hz

Answer:

The vocab word is Friction.

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Explanation:

Answer:

the answer is in the photo hope it helps❤❤

Answer:

Compounds between Nonmetals and Nonmetals

Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.

Answer:

0.92 atm

Explanation:

Assuming this is the ideal gas law, PV = nRT. Plug in the values for each.

P = unknown

V = 6.0 L

n = 0.190 moles

R = 0.0821 (there are other rates of constant, such as 8.31, 62.4, but match it up to the correct units! 8.31 will answer in units of kPa and 62.4 will answer in units of mmHg, and lastly 0.0821 answers in atm.)

T = 354.0 K

Set up your equation.

P(6) = 0.190(0.0821)(354)

6p = 5.522046

Divide.

p = 0.920341...

Answer: 0.92 atm

Hope this is right!

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)

number of moles of H[tex]_2[/tex]O= 6 moles

Substituting all the given values in the above equation, we get

number of atoms/molecules=6.022×10²³x6

number of atoms/molecules= 3.612x10²⁴molecules

Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.

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Answer:

Chlorophyll

Explanation:

chlo·ro·phyll

noun

a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.

Answer:

They break down materials into smaller pieces

Explanation:

Although using different methods

Answer:  410 nm

Explanation: Energy of a photon is E = hf = hc/λ. The smaller wavelength λ, the greater energy

Explanation:

TUU-PQVH-MFG LINK for them who truely interested in Paranormal and have any doubt on Paranormal

Answer:

0.18 moles

Explanation:

Applying,

PV = nRT................... Equation 1

Where P = pressure, V = volume, n = number of moles, R = molar gas constant, T = temperature.

make n the subject of the equation

n = PV/RT............... Equation 2

Given: V = 5.3 L, T = 22 °C = (22+272) K = 295 K, P = 632 mmHg = (0.00131579×632) = 0.8316 atm,  R = 0.083 L.atm/K.mol

Substitute these values into equation 2

n = (0.8316×5.3)/(0.083×295)

n = 0.18 moles

Answer:

The tectonic style and viability of modern plate tectonics in the early Earth is still debated. Field observations and theoretical arguments both in favor and against the uniformitarian view of plate tectonics back until the Archean continue to accumulate. Here, we present the first numerical modeling results that address for a hotter Earth the viability of subduction, one of the main requirements for plate tectonics. A hotter mantle has mainly two effects: 1) viscosity is lower, and 2) more melt is produced, which in a plate tectonic setting will lead to a thicker oceanic crust and harzburgite layer. Although compositional buoyancy resulting from these thick crust and harzburgite might be a serious limitation for subduction initiation, our modeling results show that eclogitization significantly relaxes this limitation for a developed, ongoing subduction process. Furthermore, the lower viscosity leads to more frequent slab breakoff, and sometimes to crustal separation from the mantle lithosphere. Unlike earlier propositions, not compositional buoyancy considerations, but this lithospheric weakness could be the principle limitation to the viability of plate tectonics in a hotter Earth. These results suggest a new explanation for the absence of ultrahigh-pressure metamorphism (UHPM) and blueschists in most of the Precambrian: early slabs were not too buoyant, but too weak to provide a mechanism for UHPM and exhumation.

Explanation:

We are given:

Volume of gas = 3.8 L

Pressure = 460 mmHg

Temperature = 77°c = (77+273)K = 350K

Converting the pressure to atm:

Pressure(in atm)  = Pressure(in mmHg) / 760

Pressure = 460/760 = 0.6 atm

Finding the number of moles:

using the ideal gas equation:

PV = nRT                                         [where R is the universal gas constant]

replacing the given values in this equation

(0.6)(3.8) = n(0.082)(350)

n = (0.6*3.8)/(0.082*350)

n = 0.08 moles

Answer:

c... just did it on a.pex

Answer:

O C. T=1/f

Explanation:

The period of a wave is the time taken for the wave to complete a cycle while the frequency of a wave is the number of cycles completed per unit time.

The period (T) is the inverse of frequency (f) and vice versa.

Hence mathematically, i can write;

T=1/f

Answer:

NaCI (salt) in water

Explanation:

After the salt compounds are pulled away apart the sodium chloride atoms are surrounded by water molecules. Once this happens we know that the salt is dissolved resulting in a homogeneous solution!

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Answer:

NaCI (salt) in water

Explanation:

took the quiz

Answer: Finding the [H3O+] and pH of Strong and Weak Acid Solutions The larger the Ka, the stronger the acid and the higher the H+ concentration at equilibrium. hydronium ion, H3O+, 1.0, 0.00, H2O, 1.0×10−14, 14.00.

Explanation:The hydrogen ion in aqueous solution is no more than a proton, a bare ... the interaction between H+ and H2O .

The given [tex]H_3O^+[/tex] ion concentration of a solution is an acidic solution and has a pH of 5.

pH can be calculated by using the following equation:

pH = -1(log[H3O+])

Where [H3O+] is the concentration of hydronium ions (hydrogen ions).

The concentration is given as 1 × [tex]10^-^5[/tex] mole per liter.

So, if [H3O+] = 1x[tex]10^-^5[/tex] mol/L,

then the pH = -1(log(1 × [tex]10^-^5[/tex] )) = 5

So, the pH of the given solution is 5. The value is less than 7. Hence it is considered an acidic solution.

Therefore, The given solution is an acidic solution with a pH of 5.

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Answer:

where is the answer??

Please do not just take the points without answering the question.

Explanation:

Sodium is the element having one valance electron and 3 energy level and is a metal.Its atomic number is 11 .So in first energy level ,there is 2 electrons ,in second energy level,there is 8 electrons and in third energy level,there is one electron.The one electron in the third energy level is called valance electron and it is a metal in the sence it has only one valance electron and it can easily loose it and gain +ve charge.

Answer: A

Explanation:

The correct structure of the name of the compound given is  CH₃CH₂C=CC (CH₃)₃.

Dimethyl hexyne is an organic compound. Its chemical formula is C8H14. The compound hexyne is used to make a complex compound, agrochemical, and pharmaceutical compounds.

Thus, the correct option is A, CH₃CH₂C=CC (CH₃)₃.

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Answer:

It is True.

Explanation:

Investigators use this tactic to see if the suspect is recalling by memory and if they will change their story after being asked to recall backwards.

Answer:

True

Explanation:

Correct on the test

Answer:

5.9 × 10² kJ

Explanation:

When carbon disulfide, CS₂, forms from its elements, heat is absorbed. The corresponding value for the standard enthalpy of formation of carbon disulfide is 117.36 kJ/mol. The thermochemical equation that represents this process is:

C(graphite) + 2 S(s, rhombic) ⇒ CS₂(g)   ΔH°f = 117.36 kJ/mol

117.36 kJ of heat are absorbed when 1 mole of CS₂ is formed. The amount of heat absorbed when 5.0 moles of CS₂ are formed is:

5.0 mol × 117.36 kJ/mol = 5.9 × 10² kJ

Answer:

Carbon

Explanation:

At room temperature20–22 °C (68–72 °F), nitrogen and oxygen are gases, while bromine is a liquid.

Answer:

While the Affordable Care Act (ACA) has made health insurance more affordable for ... for the majority of Americans who have coverage through employer-based plans. ... Why Average Americans Cannot Afford Health Care ... Almost half of our nation's income goes to the top 10 percent of the population.

Explanation:

Here are three ideas based on affordability:

Public transportation

Meal planning and cooking at home

Renting textbooks

Public transportation: Using public transportation such as buses and trains can be a more affordable option compared to owning and maintaining a personal vehicle.

Meal planning and cooking at home: Eating out at restaurants or buying pre-made meals can be expensive, especially if done frequently. Planning meals ahead of time and cooking at home can be a more affordable option.

Renting textbooks: Instead of purchasing new textbooks for each class, consider renting textbooks for the duration of the semester. This can be a more affordable option than buying new textbooks, especially if the textbooks are only needed for a short period.

These ideas are generally less expensive because they involve reducing unnecessary expenses and finding more affordable alternatives. By using public transportation instead of owning a car, you can save on the cost of purchasing and maintaining a vehicle.

Similarly, by cooking at home and renting textbooks, you can avoid the cost of eating out at restaurants and buying new textbooks.

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Answer:350 mmHg

Explanation:

use Dalton’s law:

P Total = P gas 1 + P gas 2 + P gas 3

825= P1+ 350+ 125

350+125=475

825-475= 350

P1= 350 mmHg

Answer:

The taxonomic units in modern taxonomy are domain, kingdom, phylum (division is sometimes used in botany in place of phylum), class, order, family, genus, and species.

The evidence used by scientists use to classify organisms are essentially form and evolutionary relationships.

Evolutionary relationships.

The diversity of living organisms on earth is very overwhelming. Human beings have come up with ways of organizing, or classifying, biological diversity throughout human history.

Organisms can be classified according to any number of criteria, including overall similarities, colors or ecological factors. It was agreed that the most useful way for scientists to organize biological diversity is to group organisms according to shared evolutionary history or characteristics. Grouping did not only result in an organized classification but it also contains and conveys information about our understanding of the evolutionary history of those groups.

Although our understanding of evolutionary relationships among organisms has greatly improved but it is not complete. Relationships among organisms and groups of organisms continues to be revised as new data becomes available comparing them to the past. Almost all taxonomies or systems of nomenclature based on evolutionary relationships among organisms are being revised.

The use of binomial nomenclature system was proposed by Carl Linnaeus. In this system, the phylogenetic relationship, cladistic analysis, and systematic approaches are used.

Explanation: Hello, i hope this helps. Your so very welcome!

Answer:

A. They often use up resources that other organisms need.

Explanation:

Invasive alien species are animals, plants, fungi and microorganisms entered and established in the environment from outside of their natural habitat. T

hey reproduce rapidly, out-compete native species for food, water and space, and are one of the main causes of global biodiversity loss.

Answer: A

Explanation:

The structure that corresponds to the name. 2, 2, 3-tribromopentane is the first one. option A is correct.

In 2, 2, 3-tribromopentane structure the organic compound consists of 5 charbon chains which all are attached with a single bond to each other and there are 2 bromines attached at the second number of carbon and the last one is attached at the third number of carbon.

Five carbons in the organic compound which all are bounded with a single bond with each other are named pentane and bromine is a functional group attached to the second and third carbon.

This system of the naming of organic compounds was introduced by the international union of pure and applied chemistry. this organic compound is also named based on this system of IUPAC culture.

Therefore, option A is correct.

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