At a certain temperature, this reaction establishes an equilibrium with the given equilibrium constant, Kc. 3A(g)+2B(g)↽−−⇀4C(g)Kc=1.33×1031 If, at this temperature, 1.20 mol of A and 3.70 mol of B are placed in a 1.00 L container, what are the concentrations of A, B, and C at equilibrium?

The molecular formula of the compound is C₄H₁₀.

To determine the molecular formula, we need to find the empirical formula first and then determine the multiple of the empirical formula using the molar mass given.

1. Determine the moles of carbon and hydrogen:

  Moles of CO₂ = mass of CO₂ / molar mass of CO₂ = 1.1385 g / 44.01 g/mol = 0.02587 mol

  Moles of H₂O = mass of H₂O / molar mass of H₂O = 0.5805 g / 18.02 g/mol = 0.03219 mol

2. Determine the ratio of moles of carbon and hydrogen:

  Carbon: Hydrogen = Moles of CO₂ / Moles of H₂O

  Carbon: Hydrogen = 0.02587 mol / 0.03219 mol = 0.8036

3. Determine the empirical formula:

  Since the ratio of carbon to hydrogen is approximately 0.8, we can assume there are 1 carbon atom and 2 hydrogen atoms in the empirical formula.

4. Determine the multiple of the empirical formula using the molar mass:

  Empirical formula mass = (mass of carbon + mass of hydrogen) = (12.01 g/mol + 1.01 g/mol * 2) = 14.03 g/mol

  Multiple = Molar mass of the compound / Empirical formula mass

          = 58.12 g/mol / 14.03 g/mol = 4.142

5. Multiply the empirical formula by the multiple to obtain the molecular formula:

  Empirical formula: CH₂

  Molecular formula = Empirical formula * Multiple

                   = CH₂ * 4.142 = C₄H₁₀

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Answer:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

Explanation:

Answer: The hydronium \((H_{3}O^{+})\) concentration of a solution with a pH of 3.60 is 0.56 M.

Explanation:

pH of a substance is the negative logarithm of concentration of hydrogen ions present in it.

It's formula is; pH = - log \([H^{+}]\)

When pH of a solution is 3.60 then its hydronium or hydrogen ion concentration is calculated as follows.

\(pH = - log [H^{+}]\\3.6 = - log [H^{+}]\\concentration of H^{+} = antilog (-3.6)\\= 0.56\)

Thus, we can conclude that the hydronium \((H_{3}O^{+})\) concentration of a solution with a pH of 3.60 is 0.56 M.

Answer:

The tissues decompose at a slower rate at lower temperatures.

Explanation:

This is my best guess but I think answer is tissue decompose slower rate at low temperature. This is why we in medicine we store specimens at very low temperature so we can do research on it at a later time but they eventually go bad. Low temperature slow down enzymes and proteins thus breakdown is slower rate.

Following are the three guidelines to follow when considering to dispose of a material in the drain:

The material should be non hazardous, no radioactive waste and no hazardous chemical waste.

No liquid, solids, sludges, or viscous substances should be disposed in the drain

The material should not interfere with sewage treatment operations. It should not have corrosive pH levels. We should also avoid grease or oil.

It is not necessary that all the waste generated in the laboratory are hazardous. Some chemicals are safe to go in the trash or can be disposed down the sink. There are certain criteria that must be followed in order for materials to be put down the drain including low toxicity, high water solubility, and moderate PH. Only small quantities are allowed in the system at any given time and the chemicals must be degradable by the wastewater treatment.

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The mass of 0.5 mole of the element is approximately 6.025 grams.

To calculate the mass of 0.5 mole of the element, we need to know the molar mass of the element.

Given that the mass of 2 x 10^21 atoms of the element is 0.4 grams, we can use this information to find the molar mass.

The number of atoms in 1 mole of any substance is given by Avogadro's number, which is approximately 6.022 x 10^23 atoms/mol.

First, we calculate the molar mass of the element using the given information:

Molar mass = Mass of 2 x 10^21 atoms / Number of moles of 2 x 10^21 atoms

Molar mass = 0.4 g / (2 x 10^21 atoms / (6.022 x 10^23 atoms/mol))

Molar mass ≈ 0.4 g / (3.32 x 10^-2 mol)

Molar mass ≈ 12.05 g/mol

Now that we know the molar mass of the element is approximately 12.05 g/mol, we can calculate the mass of 0.5 mole of the element:

Mass = Molar mass x Number of moles

Mass = 12.05 g/mol x 0.5 mol

Mass = 6.025 grams

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The amount of heat gained by the water is 500 calories. Thus, option D is correct.

Given:

Mass of water (m) = 100 g

Change in temperature (ΔT) = 30°C - 25°C = 5°C

The specific heat capacity of water (c) is approximately 1 calorie/gram°C.

Now, the amount of heat gained by the water,

Q = mcΔT

Where:

Q is the heat gained or lost by the substance

m is the mass of the substance

c is the specific heat capacity of the substance

ΔT is the change in temperature

Plugging in the values into the formula:

Q = 100 × 1 × 5

Q = 500 calories

Therefore, the amount of heat gained by the water is 500 calories.

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Explanation:

Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.

The percent yield for the production of nitrogen dioxide can be calculated using the formula: Percent yield = (actual yield / theoretical yield) x 100. In this case, the actual yield is given as 1,500 kg of nitrogen dioxide per day, and the theoretical yield can be determined based on the stoichiometry of the reaction.

From the balanced equation, we can see that the stoichiometric ratio between nitrogen oxide (NO) and nitrogen dioxide (NO2) is 2:2. Therefore, for every 2 moles of nitrogen oxide consumed, 2 moles of nitrogen dioxide are produced.

To calculate the theoretical yield, we need to convert the given mass of nitrogen oxide to moles. The molar mass of nitrogen oxide (NO) is 30 g/mol, so 1,500 kg is equal to 50,000 moles. Since the stoichiometric ratio is 2:2, the theoretical yield of nitrogen dioxide is also 50,000 moles.

Now we can calculate the percent yield:

Percent yield = (1,500 kg / 50,000 moles) x 100 = 3%

Therefore, the percent yield for the production of nitrogen dioxide is 3%. None of the given answer options match this result, so it seems there might be an error in the provided choices.

The given chemical equation represents the combustion of nitrogen oxide to produce nitrogen dioxide. According to the stoichiometry of the reaction, 2 moles of nitrogen oxide react with 1 mole of oxygen gas (O2) to produce 2 moles of nitrogen dioxide (NO2).

In the plant, it is stated that 1,500 kg of nitrogen oxide is consumed per day to produce an equal amount (1,500 kg) of nitrogen dioxide per day. To determine the percent yield, we need to compare the actual yield (1,500 kg) to the theoretical yield.

To calculate the theoretical yield, we need to convert the given mass of nitrogen oxide to moles. The molar mass of nitrogen oxide is calculated to be 30 g/mol. By dividing the mass of nitrogen oxide (1,500 kg) by its molar mass (30 g/mol), we find that there are 50,000 moles of nitrogen oxide consumed.

Since the stoichiometry of the reaction tells us that the ratio between nitrogen oxide and nitrogen dioxide is 2:2, the theoretical yield of nitrogen dioxide is also 50,000 moles.

Finally, we can calculate the percent yield using the formula: Percent yield = (actual yield / theoretical yield) x 100. Substituting the values, we get (1,500 kg / 50,000 moles) x 100 = 3%.

Therefore, the percent yield for the production of nitrogen dioxide in the given plant is 3%, which does not match any of the provided answer options.

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No, pure liquid water cannot exist at 110°C. Phases are dependent on both temperature and pressure. More specifically, water boils at 100°C at a pressure of 1 atm. If the pressure was lower, the temperature needed to boil water would be higher.

Pure water has a boiling point of 100°C at atmospheric pressure. However, the phases of water depends on the temperature and pressure of the water sample.

At lower pressure, water boils at a higher temperature while at a higher pressure, water boils at lower temperature.

Summarily, Pure water can not exist as a liquid at 110°C, it must have been converted into vapour. Unless the water is impure.

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The pH of a 0.5 M solution of sodium bisulfate (\(NAHSO_{4}\)) is approximately 1.

pH is a measure of the acidity or basicity of a solution, with a pH of 7 considered neutral, a pH less than 7 considered acidic, and a pH greater than 7 considered basic. The pH is determined by the concentration of hydrogen ions (H+) in the solution.

Sodium bisulfate (\(NAHSO_{4}\)) is a strong acid, meaning that it dissociates completely in water to form hydrogen ions (H+) and sulfate ions (\(SO_{4} ^{2-}\)). The concentration of hydrogen ions in a 0.5 M solution of sodium bisulfate is equal to the concentration of the bisulfate ions, meaning that the pH of the solution would be around 1.

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Answer:

d) 0.0962 L

Explanation:

The problem describes a dilution process, meaning that we can solve it by using the following equation:

Where subscript 1 stands for the volume and concentration of the concentrated solution, and 2 for those of the diluted solution. That means that in this case:

We input the data:

And solve for V₁:

Finally we convert 96.2 mL to L:

The answer is thus option d).

The number of sigma and pi bonds in propene is a total of 8 and 1 respectively.

A step-by-step explanation is given below:
1. Propene has the chemical formula C3H6.
2. There are three carbon atoms and six hydrogen atoms.
3. Each carbon-hydrogen bond is a sigma bond, totaling 6 sigma bonds.
4. There is a single bond between the first two carbon atoms, which is a sigma bond, adding 1 sigma bond to the total.
5. The double bond between the second and third carbon atoms consists of one sigma bond and one pi bond.

So, It concludes that in propene, there are 8 sigma bonds and 1 pi bond.

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The process that a plant goes through to create a seed that will grow into a new plant is mitosis.

The cell process of mitosis refers to the division of somatic cells such as occur in a seed to generate an adult organism (in this case, an adult plant), which contain genetically identical cells derived from this process.

Therefore, with this data, we can see that the cell process of mitosis generates genetically identical cells that lead to the development of an adult plant from a seed.

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The intermolecular forces present in ferrocene are dispersion and dipole-dipole forces. Option B is the correct answer.

Ferrocene has a symmetrical, sandwich-like structure with two cyclopentadienyl rings on either side of a central iron atom. The cyclopentadienyl rings have delocalized pi-electron density, which creates a dipole moment in the molecule.

Additionally, the molecule has a large surface area, which results in strong dispersion forces. Therefore, the dominant intermolecular forces present in ferrocene are dipole-dipole forces and dispersion forces.

Option B is the correct answer: "Dispersion and dipole-dipole forces."

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Enthalpy, in a technical sense, refers to the internal energy needed to create a system as well as the energy needed to create space for it by establishing its pressure, volume, and displacing its surroundings.

In a thermodynamic system, energy is measured by enthalpy. Enthalpy is a measure of a system's overall heat content and is equal to the system's internal energy plus the sum of its volume and pressure.

A state function that is entirely based on state functions P, T, and U is how enthalpy is also described.

Here the equation used is:

q = n × ΔH

n = Mass / Molar mass

n = 253 / 122.55 = 2.064 mol

q =  2.064 × -91 = -187.82 kJ

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Answer:

313.2 g of \({K_{2} }S O_{4}\)  must be added to 1.20 liters of water to produce a 1.50 molar solution.

Explanation:

What is molarity?

According to the given question,

Solution :

∴ Number of moles of solute, here, \({K_{2} }S O_{4}\)

= molarity x volume of the solution

= 1.20 x  1.50 = 1.8

∴ Mass of 1.8 moles of \({K_{2} }S O_{4}\) = 1.8 x molar mass of   \({K_{2} }S O_{4}\)  

Now the molar mass of \(K_{2} SO_{4}\)

= (Gram atomic mass of K x 2) + (Gram atomic mass of S) + (Gram atomic mass of O x 4)

= (39x2) + 32 + (16 x 4) g

= 174 g.

∴ Mass of 1.5 moles of \({K_{2} }S O_{4}\)

= 1.8 x molar mass of   \({K_{2} }S O_{4}\)  

= 1.8 x 174 g

= 313.2 g.

Thus, 313.2 g of \({K_{2} }S O_{4}\)  must be added to 1.20 liters of water to produce a 1.50 M solution.

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Answer:

colorless liquid with a strong smell and a white solid with no smell. The substances’ repeating groups of atoms are shown above on the left. After they were mixed, the chemist analyzed the results and found two substances. One ending substance had the repeating group of atoms shown above on the right.

Explanation:

A violent change in weather occurs as the cold air mass digs underneath the warm air mass creating thunderstorms and snowstorms in the winter.

Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the troposphere,just below the stratosphere.

Weather refers to day-to-day temperature, precipitation, and other atmospheric conditions, whereas climate is the term for the averaging of atmospheric conditions over longer periods of time.When used without qualification, "weather" is generally understood to mean the weather of Earth.

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Answer:

high melting points.

good conductors of electricity.

good conductors of heat.

high density.

malleable.

ductile.

Explanation:

Here is ur paragraph:

Metals have many interesting properties. Metals have high melting points, for example, Gold's melting point is 1948 degrees Fahrenheit. They are also good conductors of heat and electricity. They have high density and are malleable. They are also ductile. Platinum and Gold are very widely used for these reasons.

Answer:

Unicellular organisms consist of only one cell and multicellular organisms consist of many cell.

Explanation:

Living things made up of a cell are called unicellular beings. They are very small and simple. In other words, unicellular organisms are those that are formed only by a single cell in which all the vital functions necessary for life are produced. For this reason, they are mostly microscopic organisms. Examples of unicellular organisms are viruses or bacteria.

Multicellular organisms are made up of a large number of cells. They present, therefore, a greater complexity than unicellular organisms in terms of the functions they develop. All current multicellular organisms come from a single cell, that is, they begin their life being unicellular. That is, they are formed from a zygote. Some examples of multicellular organisms are mammals, fungi, and mosses.

So, unicellular organisms consist of only one cell and multicellular organisms consist of many cell.

A solution contains 32.7 g of H₃PO₄ in 455 mL of solution, then the molarity of solution is 0.733 M.

Molarity of solution will be calculated as:

M = n/V, where

V = volume

n = moles of solute which can be calculated as:

n = W/M, where

W = given mass

M = molar mass

First we calculate the moles of 32.7g of H₃PO₄ as:

moles = 32.7g / 98 g/mol = 0.333 moles

Now we calculate molarity of H₃PO₄ in 0.455 volume as:

M = 0.333 / 0.455 = 0.733M

Hence, molarity is 0.733M.

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Answer:

Magnesium chloride.

Explanation:

When magnesium and chloride react with each other produces magnesium chloride. Magnesium belongs to second group in the periodic table which means it has two electrons in its outermost shell while on the other hand, chlorine belongs to seven group which means it has seven electrons in its outermost shell so it needs one electron to become stable. So in the reaction, magnesium loses two electrons and become cation whereas two chlorine atoms receives two electrons from magnesium and become anion. Ionic bond type is present between magnesium and chlorine atoms.

Answer:

Endothermic , this is correct answer

Answer:

0.33kg

Explanation:

Force=Mass*Acceleration

5N=M*15

divide both side by 15

M=5/15=0.33kg

a substance that can’t be broken down into another substance.