balanced chemical equation for preparation of fe c12h8n2 3 2

Answer:

independent variable is how it changes how it affects something else dependent variable is something being measured

Answer: An independent variable is the variable which is changed by the scientist also called the manipulated variable. The dependent variable is the result of the action of the independent variable. it is the factor that changes due to the independent variable. It is also known as the responding variable.

Explanation

Answer:

Because there is no water and they restore their food.

Explanation:

Like their glucose and that's why they also the leaf changes color

The complex that will absorb a photon with the lowest energy is [Co(OH)6]3-. The correct answer is option A

Co(OH)6]3- is the complex that absorbs a photon with the lowest energy. It is because of the crystal field effect. The complex [Co(OH)6]3- has the lowest energy for the d-electrons of the cobalt ion. A photon is an elementary particle that forms a light beam. It has a small mass and no charge. A photon has wave-particle duality, which means it exhibits properties of both a wave and a particle. Photons are electromagnetic radiation particles, which means they have both electric and magnetic components.

The lowest energy is defined as the minimum energy that a system can have. It is the energy state that is energetically stable. Photons have energy, and the energy of the photon is directly proportional to its frequency. The energy of a photon can be used to determine the energy of the electron that absorbs it.

A weak field ligand environment means that there is a small energy gap between the t2g and eg orbitals. As a result, it absorbs photons with the lowest energy, according to the spectrochemical series. In comparison to the other complexes, [Co(OH)6]3- has a low-energy gap, which makes it the most stable.

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The amount of energy released when steam at 110°C condenses and cools to produce 500 liters of water at 50°C is approximately 2.69 x 10^7 calories.

The amount of energy released during a phase change, such as condensation, can be calculated using the formula:

Q = mL

where Q is the amount of energy released, m is the mass of the substance undergoing the phase change, and L is the substance's latent heat of vaporization. The latent heat of vaporization is the amount of energy required to convert a given amount of a substance from a liquid to a gas at constant temperature.

In this case, we want to find the amount of energy released when steam at 110°C condenses and cools to produce 500 liters of water at 50°C. First, we need to convert the volume of water to mass:

500 liters of water = 500 liters * 1000 g/liter = 500,000 g

Next, we need to find the latent heat of vaporization of water at 110°C. According to data from steam tables, the latent heat of vaporization of water at this temperature is approximately 2257 J/g.

Finally, we can use the formula to calculate the amount of energy released:

Q = (500,000 g) * (2257 J/g) = 1.13 x 10^8 J

To convert this value to calories, we can use the conversion factor of 1 calorie = 4.184 J:

1.13 x 10^8 J / 4.184 J/cal = 2.69 x 10^7 calories

So, The amount of energy released when steam at 110°C condenses and cools to produce 500 liters of water at 50°C is approximately 2.69 x 10^7 calories.

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Explanation and Answers:

If we compare the properties of the sample #4 with the sample #2 we will find that:

a) What two piece of evidence support her claim?:

- The color of sample #4 is silver, it is the same color as the color of aluminum.

- Sample #4 conducts the electricity, the same as aluminum.

b) What one piece of evidence refutes her claim?:

- The density of sample #4 is different from the density of aluminum.

c) Why does this evidence refute her claim?

Because the density is a property that is characteristic of each metal, if the sample #4 has a density different from aluminum it can't be aluminum.

C is the answer..........

Answer:

metal and non metal-electrovalent

Answer: In everyday life, for example on food packaging, the word ‘pure’ usually means that something is in its natural state without anything added to it, like sweeteners or preservatives. Natural fruit juice is made up of sugar, water, and many other naturally occurring chemicals. In chemistry, this is not considered 'pure' and is a mixture.

Explanation:

Pure substances are used in industry to make useful products such as food and drugs . 4. The NEED for pure substance In pharmaceutical industry, medicines must be tested for purity before they are sold. Impurities in drugs and food may produce undesirable side effects.

3+ sign indicates loss of 3 electronsPresent electrons=24-3=21

Electronic configuration is

\(\\ \tt\hookrightarrow 1s^22s^22p^63s^23p^64s^03d^3\)

Are frequency and wavelength the same thing? No, they are not the same but each is mathematically related to the other. Effectively, the wavelength is the distance between one wave peak and the next wave peak, or in other words, the distance between one wave high point and the next high point. Alternatively it could of course be said that wavelength is the distance between one wave low point and the next wave low point, but lets not get pedantic about it.

Think of waves in the ocean where a person may be observing the top of one wave and the top of the next wave. The wavelength is the distance between these two wave tops, or peaks. With waves in the ocean, the frequency of the waves will be the number of times that a wave peak crosses any given point on the ocean. It is probably easiest to measure frequency of waves from the ocean by standing on the beach and counting how many waves come up on the sand relative to any given time frame. Frequency is typically measured in how many waves per second but with ocean waves we are better to measure how many waves per minute because naturally the frequency will be less than one per second.

There is actually quite a bit of science over how ocean waves travel around our planet because high and low tide in the ocean are created by the moon. There is a theory that the moon creates waves that have a wavelength equal to half of the circumference of planet Earth. This is because there is a high tide at Earths point that is closest to the moon and then another high point that is at the greatest distance from the moon. The problem is that to keep up with the moon one needs to travel around the Earths equator at about 1800 kph, which is impractical for an ocean wave because they quite simply cannot travel at that fast a speed or velocity (technically angular velocity). This is what causes ocean waves to become so messy at times.

When discussing waves, most people are most comfortable discussing electromagnetic waves because almost all communication systems relied on in modern society are based on these waves and their frequency. When collecting electromagnetic waves, like TV waves, for example, there are several components to the antenna. One of them will typically have a loop of metal, which is where the required energy waves (carrying the required signal) are picked up or collected by the antenna. Don’t worry about the other components of the antenna because most are there simply to remove unwanted background waves that may spoil the quality of the signal that we collect. With the TV antenna, the distance across this “collection loop” is the wavelength that the antenna is tuned to collect.

The reason for a loop on the piece of metal that collects TV waves, rather than using a straight piece of wire, is so that all wavelengths that are close to the required one, will be collected. To get slightly more technical, in modern systems we have “frequency modulation”, which is what FM stand for. This means we deliberately make minor adjustments to the precise frequency, but I better not go into that.

The frequency of a TV wave that is being collected is the number of times in any time frame, that a wave front or wave peak, will cross the collection point. With typical electromagnetic waves like TV waves, we use a frequency that is measured to be so many Hertz. The Hertz is the standard measure of such things and it is equal to a number of wavelengths per second. The reason for this is that electromagnetic waves travel at the speed of light, which is incredibly fast.

If we are talking in the old fashioned “long wave” AM radio waves, then the wavelength is often several hundred metres in length. In Melbourne, Australia, the nearest large city to my home, the government owned ABC used a frequency of 774 kHz for many decades. They still do in fact, although most people tuned in probably rely on a repeater station these days and these will broadcast in a higher frequency. 774 kHz is a frequency of 774 thousand cycles per second. This sounds like a high frequency when compared to most other waves, even sound waves, yet because radio waves travel so fast, the wavelength is slightly greater than 387 metres in wavelength, which is almost 424 yards in wavelength.

When comparing wavelength to frequency, one is the inverse of the other so this means that the higher the frequency, the shorter the wavelength, with the rate of travel (velocity) being the factor that determines what sort of figures we come up with when comparing one to the other.
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In general, metals are characterized by the listed metals (A) brittleness, (D) high electrical conductivity, (F) high thermal conductivity

1) Brittleness: Metals are known to be brittle, which means they have low ductility and tend to break or crack when subjected to stress, instead of deforming plastically. This property is due to the metallic bonding between atoms, which creates a rigid structure that is not easily deformed.

2) High electrical conductivity: Metals are good electrical conductors, meaning they allow electricity to flow easily through them. This property is due to the presence of free electrons in the metal's structure, which are able to move and carry electrical charges.

3) High thermal conductivity: Metals have high thermal conductivity, meaning they can easily transfer heat from one point to another. This property is due to the metallic bonding between atoms, which allows for efficient transfer of heat-carrying phonons throughout the metal's structure. This makes metals good choices for many industrial applications that require efficient transfer of heat, such as in electrical equipment, heat exchangers, and heat pipes.

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The concentration of the solution, represented as mole fraction, is approximately 0.130.

To calculate the concentration of the solution in mole fraction, we need to determine the number of moles of solute (Co(CH3COO)2) and the number of moles of the solvent (H2O).

First, let's calculate the number of moles of Co(CH3COO)2 using its molar mass. The molar mass of Co(CH3COO)2 can be calculated as follows:

Molar mass of Co = 58.93 g/mol (from periodic table)

Molar mass of CH3COO = 59.05 g/mol (from periodic table)

Total molar mass of Co(CH3COO)2 = (58.93 g/mol * 1) + (59.05 g/mol * 2) Total molar mass of Co(CH3COO) = 176.03 g/mol

Next, we calculate the number of moles of Co(CH3COO)2 by dividing the given mass by its molar mass:

Number of moles of Co(CH3COO)2 = 6.4 g / 176.03 g/mol

Number of moles of Co(CH3COO)2 = 0.0364 mol

Now, let's calculate the number of moles of water (H2O) using its molar mass:

Molar mass of H2O = 18.02 g/mol (from periodic table)

Number of moles of H2O = 44.66 mL * (1 L/1000 mL) * (1 mol/18.02 g)

Number of moles of H2O = 0.00247 mol

Finally, we can calculate the mole fraction of the solution by dividing the moles of the solute by the total moles of the solution:

Mole fraction of Co(CH3COO)2 = 0.0364 mol / (0.0364 mol + 0.00247 mol)

Mole fraction of Co(CH3COO)2 = 0.130

The concentration of the solution, expressed as mole fraction, is approximately 0.130.

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The electrophilicity of hydroxyls can be increased through several methods, including the use of Lewis acids, the introduction of electron-withdrawing groups, and increasing the acidity of the hydroxyl group.

Lewis acids: One way to increase the electrophilicity of hydroxyls is by utilizing Lewis acids. Lewis acids are electron-pair acceptors that can coordinate with the lone pair of electrons on the hydroxyl oxygen, making the hydroxyl group more electrophilic. For example, adding a Lewis acid such as boron trifluoride (BF3) to a hydroxyl-containing compound can enhance the electrophilicity of the hydroxyl group.

Electron-withdrawing groups: Another approach to increase the electrophilicity of hydroxyls is by introducing electron-withdrawing groups (EWGs) onto the molecule. EWGs are groups that draw electron density away from the hydroxyl oxygen, making it more electrophilic. Common examples of EWGs include nitro (-NO2), carbonyl (C=O), and cyano (-CN) groups. By attaching these groups to the hydroxyl-containing compound, the electron density on the hydroxyl oxygen is reduced, increasing its electrophilicity.

Increasing acidity: The acidity of the hydroxyl group also affects its electrophilicity. A more acidic hydroxyl group tends to be more electrophilic. One way to enhance the acidity is by using a stronger acid as a solvent or catalyst. For instance, replacing water (a relatively weak acid) with a stronger acid like sulfuric acid (H2SO4) can increase the acidity of the hydroxyl group, thereby enhancing its electrophilicity.

By employing these methods, the electrophilicity of hydroxyls can be effectively increased, enabling their involvement in various chemical reactions such as nucleophilic substitution, condensation reactions, and many others.

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Answer: It is a molecular compound. (2) It contains a metal. (3) It can conduct electricity as a solid.

The volume,0.00428 L, of 1.525 m koh that must be added to a 0.116 l solution containing 9.81 g of glutamic acid hydrochloride.

To calculate the volume, in liters, of 1.525 M KOH that must be added to a 0.116 L solution containing 9.81 g of glutamic acid hydrochloride (H3Glu Cl−, MW = 183.59 g/mol ), we can use the equation:
Molarity (M1) * Volume (V1) = Molarity (M2) * Volume (V2)
M1 = 1.525 M (molarity of KOH)
V1 = volume of KOH (unknown)
M2 = unknown (we need to find this)
V2 = 0.116 L(volume of the solution containing H3Glu Cl−)
First, let's calculate M2:
M2 = (Molarity (M1) * Volume (V1)) / Volume (V2)
M2 = (1.525 M * V1) / 0.116 L
Next, let's substitute the values into the equation:
9.81 g H3Glu Cl− = (M2 * 0.116 L) * 183.59 g/mol
(M2 * 0.116 L) = 9.81 g H3Glu Cl− / 183.59 g/mol
Finally, we can substitute the value of M2 and solve for V1:
1.525 M * V1 = (9.81 g H3Glu Cl− / 183.59 g/mol ) * 0.116 L
V1 = (9.81 g H3Glu Cl− / 183.59 g/mol ) * 0.116 L / 1.525 M
V1 = (0.053 ) * 0.0760

V1 = 0.00428

Therefore,  the volume,0.00428 L, of 1.525 m koh that must be added to a 0.116 l solution containing 9.81 g of glutamic acid hydrochloride.

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Answer:

\(T_2=261.46\ K\)

Explanation:

It is given that,

Original temperature, \(T_1=323^{\circ}C=596.15\ K\)

Original volume, \(V_1=2.85\ L\)

We need to find the temperature if the volume of the balloon to be shrink to 1.25 L.

According to Charles law, at constant pressure, \(V\propto T\)

It would means, \(\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}\)

T₂ = ?

\(T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{1.25\times 596.15}{2.85}\\\\T_2=261.46\ K\)

So, the new temperature is 261.46 K.

The net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid is B. Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq)

This is the net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid. The balanced equation for this reaction is NaF (aq) + HCl (aq) → NaCl (aq) +HF (aq).

The net ionic equation is derived by canceling out the spectator ions, which are ions that don't participate in the chemical reaction. In this case, Na+ and Cl- are spectator ions, which means that they don't participate in the reaction and are present in the same form on both sides of the equation. Therefore, they are cancelled out, leaving the net ionic equation Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq).

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Answer:  Write down the chemical equation first;

2H2 + O2 —-> 2H2O

2. Since the mass is given, use it to calculate the mole for each reactant;

mole = mass / molar mass

mole of H2 : 8/2 = 4 mole

mole of O2 : 30/16(2) = 0.9375 mole

Now, if you're not sure which reactant to use to calculate the mass of H2O using ratio since both answer are different, find the limiting reactant.

From the equation;

2 mol of H2 -> 2 mol of H2O

4 mol of H2 -> (4*2)/2 = 4 mol of H20

______________________________________

1 mol of O2 -> 2 mol of H2O

0.9375 mol of O2 -> (0.9375*2)/1 = 1.875 mol of H2O

Let's take a look at both numbers. Since H2 produces more water than O2, O2 will be the limiting reactant as it has the least mole of H2O. So now we are going to use O2 as our limiting reactant. Use the formula to calculate mass of water using mole.

mass of H2O : 1.875*(16+2) = 33.75 g

Thats it. Correct me if im wrong

Explanation:

Gamma, alpha, and beta radiation are all forms of ionizing radiation emitted during radioactive decay, but they differ in terms of their components, energy levels, examples, creation, and safety in various types of nuclear energy.

Gamma radiation consists of high-energy photons, similar to X-rays. It possesses the highest energy level among the three types and can penetrate several centimeters of lead or several meters of concrete.

Examples of gamma-emitting isotopes include cobalt-60 and cesium-137. Gamma rays are created during nuclear reactions and decay processes, such as fission or fusion reactions. They pose a significant risk to human health due to their ability to damage living tissue, but their penetration power makes them useful in medical imaging and cancer treatment.

Alpha radiation consists of alpha particles, which are composed of two protons and two neutrons (helium nuclei). They have low energy levels and can be stopped by a sheet of paper or a few centimeters of air.

Examples of alpha-emitting isotopes include uranium-238 and radon-222. Alpha particles are created through the decay of heavy elements. While they can cause significant damage if inhaled or ingested, they are less penetrating and therefore less hazardous outside the body.

Beta radiation involves the emission of beta particles, which are high-energy electrons (beta-minus) or positrons (beta-plus). They have moderate energy levels and can penetrate several millimeters of aluminum.

Examples of beta-emitting isotopes include carbon-14 and strontium-90. Beta particles are created during the decay of certain isotopes, where a neutron is transformed into a proton or vice versa. Beta radiation poses an intermediate level of risk, as it can penetrate the skin and cause tissue damage, but it is less harmful than gamma radiation.

In terms of nuclear energy, gamma radiation is a concern in all types of reactors, as it is released during fission and fusion reactions. Shielding is necessary to protect workers and the environment.

Alpha radiation is of particular concern in nuclear fuel cycle processes like uranium mining and enrichment. Beta radiation is relevant in nuclear power plant operations, as some fission products emit beta particles. It requires appropriate shielding and monitoring to ensure worker safety.

Overall, gamma radiation has the highest energy, alpha radiation has the lowest, and beta radiation falls in between. Their differing penetration abilities, creation mechanisms, and safety considerations make them suitable for various applications and require tailored safety measures.

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Answer:

b

Explanation:

High suction pressure and high discharge pressure are caused by different factors. High suction pressure is caused by low refrigerant flow or a dirty air filter, whereas high discharge pressure is caused by a blocked or dirty condenser or a malfunctioning compressor. High suction pressure is typically caused by a lack of refrigerant flow or a dirty air filter.

When refrigerant flow is limited, the compressor will have to work harder to circulate refrigerant through the system. This increased workload can cause the compressor to overheat, leading to a decrease in efficiency and an increase in energy consumption. High discharge pressure, on the other hand, is typically caused by a blocked or dirty condenser or a malfunctioning compressor. A dirty or blocked condenser can cause the refrigerant to become trapped in the system, leading to high discharge pressure. A malfunctioning compressor can also lead to high discharge pressure, as the compressor may be unable to circulate refrigerant through the system effectively.In order to prevent high suction pressure and high discharge pressure, it is important to properly maintain and clean the HVAC system on a regular basis. This includes changing air filters, cleaning condensers, and scheduling routine maintenance and inspections.

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A conjugate acid-base pair is the pair of two compounds which differ by the presence of a proton. An acid will donate protons to a base and become a conjugate base. A base will accept protons and become a conjugate acid.Conjugate acid/base pairs are as follows:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−Explanation:

H2PO4− and HPO42−H2PO4− can donate a proton to become HPO42− and the latter can accept a proton to become H2PO4−.H2CO3 and CO32−H2CO3 can donate a proton to become CO32− and the latter can accept a proton to become H2CO3.HCl and Cl−HCl can donate a proton to become Cl− and the latter can accept a proton to become HCl.H3O+ and OH−H3O+ can donate a proton to become OH− and the latter can accept a proton to become H3O+.Therefore, the following are conjugate acid/base pairs:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−

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a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

What are the rates of thermal radiation emission, absorption, and net energy exchange for the sphere?

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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The left side of your heart pumps blood to the arteries going to the rest of the body

Answer:

4.5 L

Explanation:

From Charles law;

V1/T1 = V2/T2

Where;

V1= initial volume = 2.5 L

T1 = initial temperature = -23°C + 273 = 250 K

V2 = final volume = unknown

T2 = 177°C +273 = 450 K

Making V2 the subject of the formula

V2 = V1 T2/T1

V2 = 2.5 × 450/250

V2 = 4.5 L

Answer:

Explanation:

mg +2hcl=mgcl2 +h2

mhcl=10.95g

nhcl==0.3

nmg=1/2nhcl=0.15

mMg=3.6g

m mgcl2=14.25

The balanced chemical equation for the reaction between acetic acid and sodium bicarbonate is:

CH3COOH + NaHCO3 -> CH3COONa + H2O + CO2

we can convert the moles of sodium bicarbonate to grams using its molar mass (84.0066 g/mol).

To determine the amount of baking soda (sodium bicarbonate, NaHCO3) needed to react with a given amount of acetic acid (CH3COOH) in vinegar, we need to consider the balanced chemical equation between these two substances.

The balanced chemical equation for the reaction between acetic acid and sodium bicarbonate is:

CH3COOH + NaHCO3 -> CH3COONa + H2O + CO2

From the equation, we can see that the molar ratio between acetic acid and sodium bicarbonate is 1:1. This means that one mole of acetic acid reacts with one mole of sodium bicarbonate.

To calculate the amount of baking soda needed, we need to convert the given volume of vinegar (15.0 mL) to grams using its density and then convert grams to moles using the molar mass of acetic acid (60.052 g/mol). Since the molar ratio is 1:1, the calculated amount of acetic acid will also be the amount of sodium bicarbonate needed.

Finally, we can convert the moles of sodium bicarbonate to grams using its molar mass (84.0066 g/mol).

It is important to have the density of vinegar and the concentration of acetic acid to accurately determine the amount of baking soda required.

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Answer:

Diboron tetrachloride --->  B2Cl4

Explanation:

The reaction is CaCO

3

+2HCl→CaCl

2

+H

2

O+CO

2

.

Thus, 2 moles of HCl reacts with one mole of calcium carbonate to produce one mole each of calcium chloride, water and carbon dioxide respectively.

Hence, 3 moles of HCl will react with excess of calcium carbonate to produce 3×

2

1

=1.5 mol of carbon dioxide

Answer:

N2O5

Explanation:

First, you need to find the number of moles of each element in the compound. The molar mass of nitrogen is 14 g/mol and the molar mass of oxygen is 16 g/mol. So, the number of moles of nitrogen is 76 g / 14 g/mol = 5.43 mol and the number of moles of oxygen is 80 g / 16 g/mol = 5 mol.

Next, you need to find the simplest whole-number ratio between the number of moles of nitrogen and oxygen. This can be done by dividing both numbers by the smallest number of moles. So, the ratio is 5.43 mol / 5 mol = 1.09 : 1.

Since this ratio is close to 1:1, we can assume that the empirical formula of the compound is NO. However, since the molecular formula must be a whole-number multiple of the empirical formula, we need to multiply both subscripts by 2 to get N2O2.

Finally, we need to check if this molecular formula matches the given mass ratio. The molar mass of N2O2 is (2 * 14 g/mol) + (2 * 16 g/mol) = 60 g/mol. So, if we have 5.43 mol of N2O2, its mass would be 5.43 mol * 60 g/mol = 326 g. This does not match the given mass ratio.

Therefore, we need to try a different multiple of the empirical formula. If we multiply both subscripts by 5 instead of 2, we get N2O5. The molar mass of N2O5 is (2 * 14 g/mol) + (5 * 16 g/mol) = 108 g/mol. So, if we have 5.43 mol of N2O5, its mass would be 5.43 mol * 108 g/mol = 586 g. This matches the given mass ratio.

So, the correct answer is D. N2O5.