A sound wave has a frequency of 3250 Hz and a
wavelength of 0.1 m. What is its velocity? SHOW
YOUR WORK
help please!!

The following options correctly reflect the effect of a non-volatile solute on the boiling point of a solution:

What effect does a non-volatile solute have on the boiling point of a solvent?

There is never a situation where a pure solvent's boiling point is lower than a solution with a non-volatile solute. The size of the vapour pressure decrease is inversely proportional to the size of the boiling point increase.

Why is a non-volatile solute's boiling point higher in a solution containing it than it is in a pure state?

Because a non-volatile solute reduces the solvent's vapour pressure in accordance with Raoult's law, a solution containing one has a higher boiling point than one containing only one solvent. Increases as a result of higher boiling point.

To know more about phase equilibrium in solutions:

https://brainly.com/question/1612862

#SPJ1

Complete question:

Which of the following options correctly reflect the effect of a non-volatile solute on the boiling point of a solution? select all that apply.

Which type of arrangement of atoms could a molecule with five covalent bond (and any percentage of lone pairs) have? Trigonal bipyramidal, square pyramidal

A cell is the smallest unit of a material that retains its composition and properties. It is made up of 2 or more atoms that are joined together by covalent bond. Chemistry is built on molecules. The element sign and a suffix indicating the number of ions are used to identify molecules. A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all of the substance's physical and chemical properties. Further atom division occurs within molecules. For instance, the symbols for the oxygen atom and molecule are O and O2, respectively.

Learn more about molecules here:

https://brainly.com/question/19922822

#SPJ4

In an ecosystem, the  impact of soil Science to the development of Ghana's agriculture is that it provides suitable conditions for root germination and growth.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

#SPJ9

​

That is correct! It is a positive ion!

Answer:

Search it up. It says it on this link:

The wavelength of the light having a frequency of 7.21×10¹⁴ Hz is 416 nm (Option C)

Wavelength and frequency are related to the velocity of a wave according to the following formula:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

With the above formula, the wavelength of the light can be obatined. Details below.

From the question given above, the following data were obtained:

Velocity (v) = wavelength (λ) × frequency (f)

3×10⁸ = wavelength × 7.21×10¹⁴

Divide both sides by 7.21×10¹⁴

Wavelength = 3×10⁸ / 7.21×10¹⁴

Wavelength = 416×10⁻⁹ m

Multiply by 10⁹ to express in nm

Wavelength = 416×10⁻⁹ × 10⁹

Wavelength = 416 nm

Thus, we can conclude that the wavelength is 416 nm (Option C)

Learn more about wavelength:

https://brainly.com/question/13659036

#SPJ1

Answer:

Explanation:

The average speed of a body can be found by using the formula

\(Average \: \: speed = \frac{distance}{time} \)

To find the average speed in km/h first convert the distance from m to km and the seconds from s to hr.

For the distance

2000 m

1000 m = 1 km

2000 m = 2000/1000 = 2 km

For the seconds

21.9 s

3600 s = 1 hr

21.9 s = 21.9/3600 = 0.006 hrs

Substitute the values into the above formula and solve for the Average speed

That's

\(Average \: \: speed = \frac{2}{0.006} \)

We have the final answer as

Average speed = 333.3 km/hr

Hope this helps you

The half equation for this reaction is 2H2 + O2 = 2H2O and this is reduction because it is taking place in cathode.

Does cathode or anode decrease occur?

Although the direction of spontaneous electron flow in galvanic cells may be reversed in electrolytic cells, the definitions of cathode and anode where reduction takes place at the cathode and oxidation happens at the anode remain the same.

Which ions undergo cathodic reduction?

The positively charged ions will migrate toward the cathode after becoming reduced by receiving electrons. Since positive ions pick up electrons at the negative cathode, reduction takes place there.

Know more about cathode- brainly.com/question/2349926

#SPJ1

Answer:

try to calcutlae on paper

Explanation:

try to calculate on paper

Explanation:

1. As you go across a period, what is a useful comparison point?

A.

oxides

2. Most elements are

A.

allotropes

3. A metalloid is a(n) __ conductor of heat and electricity than a metal.

A.

better

4. What causes the formation of allotropes?

A.

pressure

As you move __and __ elements become more metallic.

A.

left, down

5. All of the following metalloids form allotropes except

A.

B

6. What is a chemical property of a metal?

A.

malleable

Answer: Frequency

Explanation: Without a doubt my answer is Frequency, none of the other options have nothing to do with sound waves so Frequency is my best bet.

Answer:

0.10 amps

Explanation:

The energy charge, EC value for atypical adenylate concentrations for the cell containing the mutant adenylate kinase is equals to the 0.5164 ~0.52.

Adenylate kinase (Adk) is an essential enzyme for energy maintenance, that controls energy balance in cells by catalyzing the reversible conversion of ATP and AMP into two molecules of ADP. The Adenylate energy charge, defined as [ATP] + 1/2 [ADP]/[ATP] + [ADP] + [AMP], is a linear measure of the amount of metabolic energy stored in the adenine nucleotide pool. The energy charge of the adenylate system is increased in normal rate after intraperitoneal administration of adenosine, increasing ATP (adenosine triphosphate) levels along with decreases in ADP (adenosine diphosphate) and AMP (adenosine monophosphate). Here, ATP = 0.5 mM, ADP = 12.2 mM, AMP = 0.08 mM

So, adenylate energy charge = [ [ATP]+ 1/2 [ADP] ]/[ [ATP] + [ADP] + [AMP] ]

=> Energy charge = (0.5 mM + 1/2(12.2 mM)/(0.5 mM + 12.2 mM + 0.08 mM)

=> EC = (0.5 mM + 6.1 mM)/(12.78 mM)

=> EC = 6.6 mM/12.78 mM

=> EC = 0.51643 ~ 0.52

Hence, required energy charge is 0.52.

To learn more about adenylate kinase, visit :

https://brainly.com/question/29932822

#SPJ4

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

For more such questions on MgCl₂ visit:

https://brainly.com/question/26311875

#SPJ8

The molecular formula : C₁₈H₁₈N₈

Given

62.41% C, 5.24% H, and 32.36% N

Required

The molecular formula

Solution

mol ratio

C : 62.41/12.0096 = 5.1967

H : 5.24/1.00784 = 5.1992

N : 32.36/14.0067 = 2.310

Divide by 2.310(smallest)

C : 5.1967/2.31=2.25

H : 5.1992/2.31 = 2.25

N : 2.31/2.31 = 1

Multiplied by 4

C : H : N = 9 : 9 : 4

The empirical formula : C₉H₉N₄

(C₉H₉N₄)n=346.40 g/mol

(12.0096 x 9 + 1.00784 x 9 + 14.0067 x 4)n=346.4

(108.0864+9.07056+56.0268)n=346.4

(173.184)n=346.4

n=2

The molecular formula : C₁₈H₁₈N₈

Answer:

Each nerve cell is connected to the brain by electrical signals

Explanation:

Answer:

they said it above me

Explanation:

Answer:

conserved or created/destroyed. We can say that throughout the reaction mass is conserved.

For a chemical reaction in a closed system, mass Connot  be  or destroyed . We can say that throughout the reaction mass is conserved .

During a chemical reaction, atoms are rearranged and bonded together in new combinations, forming different substances. However, the total number of atoms remains the same. This means that the total mass of the reactants must be equal to the total mass of the products.

The law of conservation of mass is based on the principle that atoms are neither created nor destroyed during a chemical reaction. Instead, they are rearranged and redistributed into different chemical species.

It is important to note that while mass is conserved, the substances involved in the reaction may undergo changes in physical state (solid, liquid, gas) or experience changes in energy, such as the release or absorption of heat. These changes do not affect the total mass of the system.

In summary, for a chemical reaction in a closed system, mass cannot be created or destroyed. The law of conservation of mass states that the total mass of the reactants is equal to the total mass of the products, and throughout the reaction, mass is conserved.

This principle is a fundamental concept in chemistry and plays a crucial role in understanding and balancing chemical equations.

For more such questions on chemical reaction visit:

https://brainly.com/question/25769000

#SPJ8

Now

No of molecules:

\(\\ \sf\longrightarrow No\:of\;moles\times Avagdro\:no)\)

\(\\ \sf\longrightarrow 3(6.022\times 10^{23})\)

\(\\ \sf\longrightarrow 18.066\times 10^{23}\)

\(\\ \sf\longrightarrow 1.8066\times 10^{22} molecules \)

Answer:

0.30625 Ci

Explanation:

From the question given above, the following data were obtained:

Half-life (t½) = 5.73E3 years

Original activity (Nₒ) = 0.350 Ci

Time (t) = 1.719E4 years

Difference in activities =?

Next, we shall determine number of half-lives that has elapse. This can be obtained as follow:

Half-life (t½) = 5.73E3 years = 5.73×10³ years

Time (t) = 1.719E4 years = 1.719×10⁴ years

Number of half-lives (n) =?

n = t / t(½)

n = 1.719×10⁴ / 5.73×10³

n = 3

Thus, 3 half-lives has elapsed.

Next, we shall determine the activity after 1.719E4 years. This can be obtained as follow:

Original activity (Nₒ) = 0.350 Ci

Number of half-lives (n) = 3

Activity remaining (N) =?

N = 1/2ⁿ × Nₒ

N = 1/2³ × 0.350

N = 1/8 × 0.350

N = 0.125 × 0.350

N = 0.04375 Ci

Finally, we shall determine the difference in activities. This can be obtained as follow:

Original activity (Nₒ) = 0.350 Ci

Activity remaining (N) = 0.04375 Ci

Difference in activities =?

Difference in activities = Nₒ – N

Difference in activities = 0.350 – 0.04375

Difference in activities = 0.30625 Ci.

Answer:

See explanation

Explanation:

When (S)-2-methylcyclopentanone is treated with an acid, the carbonyl oxygen atom is protonated.

This leads to the emergence of a positive charge on the cabonyl oxygen. Then the C=O bond is now transformed into H-C-OH where C is a carbocation which leads to a racemic mixture. Loss of a proton from the adjacent carbon atom completes the mechanism.

In this process, the optically active (S)-2-methylcyclopentanone is converted to a pair of diastereomers thereby loosing its optical activity.

The structure for 2-methyl-3-propalhex-2-yne can be shown in the image attached.

We know that a compound is composed of atoms that can be found in the compound. For the organic compound, we can see that we can be able to obtain the structure of the compound from the structure.

The compound as we can see is  2-methyl-3-propalhex-2-yne. The structure of the compound must be able to include a double bond as we can clearly see from the image that is attached to this answer.

Learn more about structure:https://brainly.com/question/24076265

#SPJ1

Explanation:

Mg+NaF. NaF+Mg

are use sure about the question

Answer:

There are many different price adjustment strategies which can be implemented in the current market.

Explanation:

Psychological pricing:

Psychological pricing is a strategy in which the price of a product is displayed with mostly one cent difference so the whole number shown is less by $1 and this difference can get higher if the price of the product is more.

Example 1: The price for a toy in a toy shop is $4.99, if rounded this will be $5 but the whole number visible is $4.

Example 2: The price of a laptop is $193, this again is nearly $200 but the price is reduced by $7 in order to influence their customers into buying the product.

Example 3: The price of a car is $35,995, this again is about $36,000 but the buyer may be influenced by this technique and result in purchasing the product with such price.

Geographical Pricing:

Geographical pricing is a strategy where different prices are charged in different outlets, this strategy is made keeping in mind the purchasing power of the locality, if the local people can pay higher price for a product then the price is high there but same product may have a lower price in an area where people can not pay high price.

Example 1: Price of a T-shirt is $15 in a posh area while the price of the same T-shirt is $5 in an area with poor locality.

Example 2: Price of a hair brush is $10 in a poor area while the same brush is available in a posh area at a rate of $35.

Example 3: Price for a food item is $6 in a restaurant in posh area while the same burger is available for $3 in a restaurant in a poor area.

The number of moles of acetic acid which has a molar mass of 60.05 g/mol present in 16.84 grams of acetic acid is 3.56.

Given the molar mass of Acetic acid (M) = 60.05 g/mol.

The mass of acetic acid (m) = 16.84g

Let the number of moles = n

A mole is a unit of measurement used in chemistry to measure amount of substance. It is calculated as molar mass by mass of the given substance. The mole is defined as the amount of a substance that contains as many elementary entities (atoms, molecules, ions, etc.) as there are atoms in exactly 12 grams of carbon-12. One mole of a substance contains this number of particles, and can be used to calculate the mass of a given sample of the substance.

n = 60.05/16.84 = 3.56 moles

Hence the required number of moles are 3.56.

To learn more about molar mass click here https://brainly.com/question/12127540

#SPJ1

The change in bond energy here, is the difference between the sum of bond energies of reactants and that of products. Thus, the correct option is  -509.

Bond energy is the energy required to break the bond between two atoms in a molecule or compound. The change in bond energy in a reaction is the difference between the sum of bond energies of reactants and that of products.

Given,

H - H = 432

for 2 H - H = 864

O - O = 495.

The reaction is combination of two hydrogen molecules with one oxygen molecule to form two water molecules.

One water molecule contains two O-H bonds. Hence two water molecules contains 4 O-H bonds.

O-H= 467

Then 4 O - H = 1868.

Then, the total bond energy between reactants and products is:

864 + 495 - 1868 = -509.

Therefore, option c is correct.

Find more on bond energy:

https://brainly.com/question/26141360

#SPJ1

The following chemicals are considered to pose fire hazards in normal use: diethyl ether, ethanol, acetone, and ethyl acetate.

Fire hаzаrds аre situаtions thаt could cаuse the ignition of combustible mаteriаl if left unchecked or uncontrolled. Fire hаzаrds аnd fire types will vаry from worksite to worksite, depending on the type of work being performed аnd the types of mаteriаl on locаtion.

From the options, dichloromethаne is а combustible liquid with а sweet odour. It reаcts violently with metаls such аs аluminium powder, mаgnesium powder, strong bаses аnd strong oxidаnts, cаusing а fire аnd explosion hаzаrd. That's why dichloromethane can't suggest for daily use.

Your options aren't well arranged, but most probably your options were

A. diethyl ether

B. dichloromethane

C. ethyl acetate

D. ethanol

E. acetone

Thus, the correct options are A, C, D, and E.

For more information about fire hazards refer to the link:

https://brainly.com/question/28379186

#SPJ4

Answer:

K

Explanation:

The picture that demonstrates a state of matter without a fixed shape or fixed volume is picture K.

Gases are one of the three states of matter without a fixed shape and volume. They simply take up the shape of their containers and are free to move all about.

Theoretically, 682.1 g of magnesium nitrate is produced.

Every sample of a substance will include an identical number of oxygen and magnesium atoms. The mass of an atom is divided by the compound's total mass, multiplied by 100, to determine the percent composition. We aim for an equal number of each sort of atom on both sides when balancing chemical equations. The coefficients are the only thing changed. The numbers in front of the molecule are the coefficients.

One mole of the chemical magnesium nitrate weighs 148.33 g. The periodic table lists the other atom masses. Therefore 16.39% Mg, 18.89% N, and 64.72%O make up the mass-percent composition. Mg (s) + O2 (g) MgO (s) is balanced as 2Mg (s) + O2 (g) 2MgO. (s).

To know more about magnesium visit:-

https://brainly.com/question/1533548

#SPJ1