An organic (covalent) compound is determined to contain 25.54% carbon, 6.43% hydrogen, and 68.03% oxygen. The molar mass of this compound is 141.099. What is the molecular formula of this compound?

Answer:

A population is a group of organisms belonging to the same species that live in the same area and interact with one another.

Explanation:

Levels of Ecological Organization

Level # 2. Population:

Level # 3. Community:

Level # 4. Ecosystem:

Level # 5. Biome:

Level # 6. Biosphere:

The wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

Wavelength is a property of any type of wave that refers to the distance between two adjacent points on the wave that is in phase, i.e., at the same point in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The energy carried by the photon (E) is related to the wavelength (\(\lambda\)) through the following equation:

\(E=hc/\lambda\); where 'h' is the Plank's Constant and 'c' is the speed of light which is \(3* 10^{-7} m/s\).

We can say that

\(\lambda - hc/E\)

Now after substituting the given values, we get:

\(\lambda = (6.626 * 10^{-34} J.s * 3.00 * 10^8 m/s) / (4.071 * 10^{-19} J)\\\lambda = 4.854 * 10^-7 m\)

Therefore the wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

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One structural difference between oligosaccharides and polysaccharides is their respective chain lengths. Oligosaccharides are composed of a relatively small number of monosaccharide units (typically 3 to 10), whereas polysaccharides consist of a larger number of monosaccharide units, often hundreds or thousands. This difference in chain length gives rise to variations in their properties and functions.

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The Keq for this reaction is 0.857.

The equilibrium constant Keq of a chemical reaction is described as the value of its reaction quotient at chemical equilibrium, a state approached by a dynamic chemical system after sufficient time has elapsed at which its composition has no measurable tendency towards further change.

The Keq can be calculated using the ratio of the product concentrations to the reactant concentrations at equilibrium:

Keq = (H2O)(CO) / (H2)(CO2) = (0.094 mol) (0.094 mol) / (0.106 mol) (0.106 mol) = 0.857.

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Answer:

29 percent of federal R&D money goes to universities, 29 percent goes to industry, and another 29 percent goes to researchers who work directly for federal agencies. About 10 percent goes to federally funded labs operated by private contractors.

Answer:

Explanation:

Funding from the government greatly affects the scientific research as a research can take number of years to complete. During this time period lot of financial support is required as there might be lot of expensive chemicals or substance that the scientist requires for his research.

Explanation:

The overall rate of a reaction between two species doubles when: the order of both species changes or any of the species changes.

The overall order of the reaction is found by adding up the individual orders. For example, if the reaction is first order with respect to both A and B (a = 1 and b = 1), the overall order is 2. Therefore overall order is 2 or second order reaction although order of individual species is 1.

Answer: A

Explanation:

As one increases the other goes in a straight line.  It is called a direct proportionality.  Forms a linear graph.

Answer:

This will be really short but pi2 is the condense amount that (425h209) will equal 4.98288493

Explanation:

The number of moles of NaCl dissolved in the water to make the given solution is 1 mole.

A mole can be described as a unit that is employed to calculate the count of particles. The particles which are counted are usually identical entities, individually distinct.

The amount of chemical substance can be measured in the terms of the mole and the number of entities in one mole is approximately equal to 6.023 × 10 ²³.

Given, the one liter of a 1 M solution of NaCl.

The concentration of the NaCl solution = 1 M

The molarity of the given solution, \(M = n/V\)

The number of moles of NaCl, n = M ×V = \(\displaystyle {1 mol L^{-1}}\times{1L}\) = 1 mol

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Explanation:

Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.

Answer:

Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.

Explanation:

The jumbled word "gzeysktqix" can be unscrambled to form the word "skyzigtext."

Here are possible words that can be made from this jumbled word:

Sky: Referring to the atmosphere above the Earth.

Zig: Describing a series of sharp turns or angles.

Text: Referring to written or printed words.

Six: The number following five and preceding seven.

It seems that the jumbled word has provided a mix of letters that can be rearranged to form these words. This exercise is likely intended to enhance the student's vocabulary skills, spelling ability, and problem-solving skills. By unscrambling the letters, the student is encouraged to explore different word possibilities and apply their knowledge of language. It also promotes critical thinking and creativity as they find valid words from the given set of letters.

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Answer:

Last one

hope it helps mvhsbshsjjak

Answer:

intermolecular forces

Mass of \($\mathrm{Na}{2} \mathrm{CO} 3$\) required \($=0.55 \mathrm{~g}$\)

The mass 0.120M HCI:

Moles of \($\mathrm{HCl}$\)reacted \($=0.120 \times 21.6 / 1000=0.00260$\)

according to balanced reaction, \($\mathrm{HCl}$ and $\mathrm{Na} 2 \mathrm{CO} 3$\) reacts in \($2: 1$\) the ratio

moles of \($\mathrm{Na} 2 \mathrm{CO} 3$\)required \($=0.00260 \times 2=0.00520$\)

convert moles to mass

mass \($=$\)moles \($\times$\)molar mass

mass \($=0.00520 \times 106.0$\)

mass \($=0.55 \mathrm{~g}$\)

mass of \($\mathrm{Na} 2 \mathrm{CO} 3$\)required \($=0.55 \mathrm{~g}$\)

Mass 0.120M HC is \($=0.55 \mathrm{~g}$\)

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Answer:

45g

Explanation:

Use the Mole = Mass x Mr equation:

Rearrange the above equation to find mass,

Mass = 2.5 moles x 18 (Mr of H₂O) = 45g

Therefore answer is 45g

Answer:

Given

number of moles (n) =2 . 5 mol

R.tc maas of H2O (m) =?

sln

H2O =(1x2+16)

=18g/mol

n=m/mr

m=nxmr

m=2.5x18

m=45g

mass of water is 45g

Answer:

d. Both Cl and COCI are intermediates.

Explanation:

Hey there!

In this case, according to the given mechanism:

Cl2 --> 2Cl

Cl+ CO --> COCl

COCl + Cl2 --> COCl2 + Cl

2Cl --> Cl2

We can see that the overall reaction, omits the presence Cl, COCl and the result is:

Cl2+CO-->COCl2

Which means d. Both Cl and COCI are intermediates.

Regards!

Answer:

When the metal reacts with hot, concentrated sulphuric acid, the products of the reaction are copper (II) sulphate, sulphur dioxide and water. Cu + 2H2SO4 = CuSO4 + SO2 + 2H2O. This is a typical redox reaction in which the acid is reduced to SO2, but no hydrogen is produced here

Answer:

Explanation:

From the information given;

Consider using Lande's Interval rule which can be expressed as:

\(\Delta E = E_{j+1} - E_jj \ = \alpha (j+1)\)

here;

\(j+1\)  = highest level of j

and

\(\dfrac{\Delta E_1}{\Delta E_2} = \dfrac{(j+2)}{(j+1)}\)

\(\dfrac{5}{3} = \dfrac{(j+2)}{(j+1)}\)

\(5(j+1) = 3(j+2)\)

\(5j+5 = 3j+6\)

\(2j = 1\\ \\ j = \dfrac{1}{2}\)

recall that:

\(j = |S-L| \ \to \ |S+L |\)

So;

\(S-L = \dfrac{1}{2} --- (1)\); &

\(S+L = \dfrac{5}{2} --- (1)\)

Using the elimination method, we have:

\(2S = \dfrac{6}{2}\)

\(S = \dfrac{3}{2}\)

Since \(S = \dfrac{3}{2}\); then from (1)

\(\dfrac{3}{2} -L = \dfrac{1}{2}\)

\(L = \dfrac{2}{2}\)

\(L = 1\)

Answer:

Esto se debe a la rotación de la tierra

Explanation:

Surface ocean currents curve to the right in the Northern Hemisphere because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect.

Answer:

it in my mind that we were in this room for financial purpose or molecules of a group that had to do it in a neuron's way and the way it is and we are going back and doing things we have little more than a lot

Answer:

C8H16O4

Explanation:

C2H4O= 24+4+16

44

n=molar mass/empirical formula

n=176.21/44

=4

Therefore

Molar Formula= (C2H4O)4=C8H16O4

Answer:

Yes

Explanation:

A krypton atom will remain the same despite changing the number of neutrons they contain.

The neutron is a nuclear particle found within an atom.

Answer:

the results of an investigation thank me later

Explanation:

1. The constituent gases of air are:

2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.

3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.

4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.

5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.

6. Air is useful to us in various ways. Three points highlighting the importance of air are:

7. Three properties of air include:

Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.

8. Four effects of air pollution include:

9. Causes of pollution:

10. Two control measures for air pollution include:

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Approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

The relationship between the initial and final concentrations and volumes must be taken into account.

Given: Initial concentration \((C^1) = 1 M Initial volume (V^1) = 250 mL\)

\((C^2) = 3 M final concentration\)

We can use the equation:

\(C^1 * V^1 = C^2 * V^2\)

Where:

\(V^2\)is the final volume of the solution

Rearranging the equation to solve for V2:

\(V^2 = (C^1 * V^1) / C^2\)

Substituting the given values:

\(V^2 = (1 M * 250 mL) / 3 M\)

\(V^2 = 250 mL / 3\)

\(V^2\) ≈ \(83.33 mL\)

To find the amount of water that needs to be evaporated, we subtract the final volume from the initial volume:

Amount of water to be evaporated = \(V^1 - V^2\)

Amount of water to be evaporated = 250 mL - 83.33 mL

Amount of water to be evaporated ≈ 166.67 mL

Therefore, approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

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Answer:

smokin tha zaza

Explanation:

trust me

Answer: Boiling because it makes the molecules in water bounce around.

Hope it helps.

The strand 1 of hydrocarbons is used to produce plastic, hence option D is correct.

Raw resources like natural gas, oil, or plants that have been processed into ethane and propane are used to make plastics. The subsequent "cracking" procedure uses heat to transform ethane and propane into ethylene and propylene. To produce various polymers, these components are mixed.

Propylene is a substance found in large quantities in petroleum. In order to speed up chemical processes, refiners combine heated propylene with a catalyst to create plastic. Propylene molecules start to cluster together like beads on a thread as a result.

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50.9 grammes of Nickel (III) oxide are converted into 36.2 grammes of Nickel.

By extension of this definition, the mass of any material represented in atomic mass units is numerically equivalent to the molar mass of that substance in grammes per mole. For instance, an oxygen atom has an atomic mass of 16.00 amu, which translates to a molar mass of 16.00 g/mol.

2Nickel (III) oxide(s) ⟶ 4Nickel(s) + 3Ocygen(g)

The balanced equation shows that 2 moles of Nickel (III) oxide reacts to form 4 moles of Nickel.

Next, we need to calculate the number of moles of Nickel (III) oxide:

molar mass of Nickel (III) oxide = 165.38 g/mol

moles of Nickel (III) oxide = mass/molar mass = 50.9 g/165.38 g/mol = 0.308 moles

Using the mole ratio from the balanced equation, we can calculate the moles of Nickel formed:

moles of Nickel = 0.308 moles Nickel (III) oxide × (4 moles Nickel /2 moles Nickel (III) oxide) = 0.616 moles Nickel

Finally, we can calculate the mass of Nickel formed:

molar mass of Nickel = 58.69 g/mol

mass of Nickel = moles of Nickel × molar mass of Nickel = 0.616 moles × 58.69 g/mol = 36.2 g

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Explanation:

Respuesta: La masa atómica del carbono (C) es 12 g/mol; para el oxígeno (O) es de 16 g/mol. Esto significa que 6.022 x 1023 átomos de carbono pesan 12 gramos. Según esto, el peso molecular del CO2 es: 12 g/mol [C] + 2 x 16 g/mol [O2] = 44 g/mol