a mixture consisting of 1 mol of h2o(g) and 1 mol co(g) is placed in a 5 l reaction vessel at 800 k. at equilibrium, 0.411 mol co2(g) is present as a result of the reaction co(g) h2o(g) ⇀↽ co2(g) h2(g). what is kc at 800 k?

Answer:

IM GONNA SAY THE ANSWER IS D. All of the above!

Explanation:

NST - NO SUCH THING

NS - NONSENSE

BS - BULL SHHHHHH

AOTA - ALL OF THE ABOVE

LOL

False. The flammability of the cosmos does not decrease in a system where H2 burns in O2 to generate h2o (l). H2 does not catch fire.

Among the most typical dangerous compounds discovered in a laboratory are flammable liquids. The main danger posed by flammable liquids is that they easily ignite and burn. A flammable liquid, according to the National Fire Protection Association (NFPA), is one whose flash point is less than 100°F (38°C).

They consist of petroleum-based fuels like gasoline and kerosene as well as fossil fuels including coal, natural gas, and petroleum. Paper and cardboard are examples of materials produced of wood .

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Answer:

1.99 grams

Explanation:

hope this helps

Answer: 2 kg

Explanation:

Answer:

3-Ethyl-2,4-Dimethylhexane

Explanation:

3-ethyl-2,4-dimethylhexane

FiO2 (Fraction of Inspired Oxygen) in the toxic or danger zone is considered above 0.5 or 50%.

FiO2 is the concentration of oxygen that a patient inhales. FiO2 less than 0.21 (21%) is considered room air, and FiO2 more than 0.5 or 50% is considered toxic or dangerous. Oxygen toxicity happens when there's excessive oxygen concentration in the lungs. Oxygen at high concentrations can produce harmful reactive oxygen species that can damage the alveolar-capillary membrane and lead to inflammation and oxidative stress.

Although the use of high FiO2 may be necessary for certain medical conditions, such as respiratory failure or sepsis, the benefits must always be weighed against the potential risks of oxygen toxicity. This is why clinicians monitor oxygen levels and titrate FiO2 to maintain appropriate oxygenation while avoiding toxicity.

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Answer:

Simple distillation

The theoretical yield of 1-hexanol (in g) for the reaction is: 102.18 g

Theoretical Yield of 1-HexanolIn the reaction for the hydroboration oxidation of 1-hexene to form 1-hexanol, the theoretical yield of 1-hexanol (in g) can be calculated by applying the formula:

Theoretical yield = (mass of limiting reactant x molecular weight of 1-hexanol) / molecular weight of limiting reactant

Given that the reaction includes 0.84 ml of 1-hexene, which has a density of 0.673 g/ml, 1.73 ml of 1.00 m borane in thf, and 1.26 ml of 30.0% m/v hydrogen peroxide. The molecular weight of 1-hexene is 84.16 g/mol, and the molecular weight of 1-hexanol is 102.18 g/mol.

To find out the limiting reactant, we need to first calculate the moles of each reactant as follows:

Moles of 1-hexene = volume x density / molecular weight = 0.84 ml x 0.673 g/ml / 84.16 g/mol = 0.00675 mol

Moles of borane = volume x concentration = 1.73 ml x 1.00 M = 0.00173 mol

Moles of hydrogen peroxide = volume x concentration = 1.26 ml x 30.0% m/v / (100 g/L) / (34.0147 g/mol) = 0.00113 mol

From the above calculations, the borane is the limiting reactant since it produces the least amount of moles of product. Therefore, the moles of 1-hexanol produced is also equal to the moles of borane used in the reaction.

Moles of 1-hexanol produced = moles of borane used = 0.00173 mol

The theoretical yield of 1-hexanol can be calculated by applying the formula:

Theoretical yield = (mass of limiting reactant x molecular weight of 1-hexanol) / molecular weight of limiting reactant= (0.00173 mol x 102.18 g/mol) / 0.00173 mol= 102.18 g

The theoretical yield of 1-hexanol is 102.18 g.

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Answer: The vapor pressure of pure water at 100°C is 760mm of Hg.

Explanation: We know tat 100 degree Celsius the water will convert into gas phase.  At boiling point the vapor pressure of any liquid is 1 atmosphere and if we boil the water at 100° Celsius  it means 1 atmosphere . So, 1 atmosphere = 760mm of Hg.

In order to keep metallic atoms from moving too easily, one can add atoms of different sizes.

Metallic atoms form metallic bonds with compatible atoms that allow them to move around freely. The sea of mobile electrons and malleability will only help in that aspect as it nurtures that property of flow of movement of electrons within the atoms.

The addition of atoms of different presents itself as a physical hindrance that can stop the atoms from moving too easily. It acts as a block. It also prevents the formation of bonds due to incompatibility enhancing the need to keep the atoms from moving too easily.

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The mass of unknown radioactive substance will be 69 gram.

When a substance will have unstable nuclei and even the capacity to spontaneously release energy while exchanging fast-moving charged particles in an effort to stabilize, the substance is described as radioactive.

It is known that

\(N/N_{0} = (1/2)^{t/x}\)

where, N = initial quantity, \(N_{0}\)  = quantity remaining, t = elapsed time.

Given that,

N = 38.5 g

t = 3.20 hours

x = 8 hour

\(N_{0}\) = ?

Put the value of given data in above equation.

\(N/N_{0} = (1/2)^{t/x}\)

38.5/ \(N_{0}\)  = 80/32

\(N_{0}\)  = 69 gram.

Therefore, the mass of unknown radioactive substance will be 69 gram.

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Answer:

95.2 - 40.8 = 54.4 g of oxygen

number of moles = mass (g)/ Mr

no. of moles of carbon = 40.8/12 = 3.4

no. of moles of oxygen = 3.4

divide both by smallest value which is 3.4 and you’ll get 1 mole of carbon and 1 mole of oxygen therefore the empirical formula is CO

Explanation:

hope this helps :)

The empirical formula will be CO.

The simplest entire numeric ratio of elements in a chemical molecule would be its empirical formula.

Calculation of empirical formula

Mass of carbon = 95.2 g

Mass of oxygen = 95.2 - 40.8 = 54.4 g of oxygen

Moles can be determined by using the formula:

number of moles = mass (g)/ Mr

no. of moles of carbon = 40.8/12 = 3.4

no. of moles of oxygen = 3.4

The empirical formula would be CO by dividing mostly by the smallest value, which would be 3.4. This will give you 1 mole of carbon but also 1 mole of oxygen.

Therefore, the empirical formula will be CO.

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2.62 moles of glucose can react with 15.7 moles of oxygen. The balanced chemical equation for the combustion of glucose is:

C6H12O6 + 6O2 → 6CO2 + 6H2O

From the equation, we can see that for every mole of glucose that reacts, 6 moles of oxygen are required. Therefore, the number of moles of glucose that can react with 15.7 moles of oxygen can be calculated as follows:

Number of moles of glucose = (Number of moles of oxygen) / 6

Number of moles of glucose = 15.7 / 6

Number of moles of glucose = 2.62

Therefore, 2.62 moles of glucose can react with 15.7 moles of oxygen.

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Answer:

The heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.

Explanation:

The heat required to vaporize 102.3 g of H₂O(l) can be calculated as follows:

\( q = m*\Delta H_{v} \)

Where:

q: is the heat  

ΔHv: is the heat of vaporization of water = 2260 J/g

m: is the mass = 102.3

\(q = m*\Delta H_{v} = 102.3 g*2260 J/g = 231198 J\)

Therefore, the heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.

I hope it helps you!

The heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.

The heat required to vaporize 102.3 g of H₂O(l) can be calculated as follows:

\(q=m\times H_v\).....(1)

Here,  q is the heat  

\(H_{v}\): is the heat of vaporization of water = 2260 J/g

m: is the mass = 102.3 g

Substitute the value in equation (1) as follows:-

\(q=102.3\ g\times2260\ J/g\\\\=231198\ J\)

Therefore, the heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.

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

In block caving mining, the desired material is located underground, dissolved into a liquid, and then extracted. This is one method of mining sodium chloride, or salt.

Drilling holes beneath the ore body and utilizing designed blasts to disintegrate the ore and rocks are all part of block caving mining. Then, with the aid of gravity, the mixture of rocks and ore is carried for processing. Once the production from open-pit mining becomes unprofitable, block caving mining frequently occurs. Is called block caving mining

Salt Chloride (sodium chloride),  The ratio of the sodium and chloride ions in sodium chloride is exactly one to one. It is frequently referred to as table salt, common salt, or halite (the mineral form of common salt).

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The proton-proton chain require a high temperature because at high temperatures the protons have enough speed to overcome the electrical repulsion, option B.

The proton-proton chain, often known as the p-p chain, is one of two known sets of nuclear fusion events that stars use to convert hydrogen to helium. It prevails in stars with masses less than or equal to that of the Sun, but theoretical models predict that the CNO cycle, the second known reaction, would dominate in stars with masses more than around 1.3 times that of the Sun.

The "proton-proton chain reaction," despite its name, is not a chain reaction in the traditional sense. A chain reaction is defined in most nuclear processes as a reaction that creates a product, such as neutrons released during fission, that promptly stimulates another similar event. The proton-proton chain is a succession of processes, similar to a decay chain. The result of one reaction serves as the starting ingredient for the next.

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Complete question:

Why does the proton-proton chain require high temperatures?

Answer:

6

Explanation:

2+2+2=6 :)

Answer:

6

Explanation:

vvvffhjh DC hcf vhcnbfhbc

Gold is found in various ionic compounds, but one of the most well-known and commercially significant compounds is gold chloride, also known as auric chloride or gold(III) chloride.

The chemical formula for gold chloride is AuCl₃. Gold chloride is an ionic compound composed of gold cations (Au³⁺) and chloride anions (Cl-). It is a yellow-orange solid that is highly soluble in water. Gold chloride can be formed by reacting the gold metal with chlorine gas or by dissolving the gold metal in aqua regia, which is a mixture of concentrated nitric acid and hydrochloric acid.

Gold chloride has several uses and applications. It is commonly used in the field of nanotechnology for the synthesis of gold nanoparticles. These nanoparticles have unique optical, electronic, and catalytic properties, making them valuable in various fields such as medicine, electronics, and materials science.

In addition to gold chloride, gold can also form other ionic compounds with different anions, such as gold bromide (AuBr), gold iodide (AuI), gold sulfide (Au2S), and gold cyanide (AuCN). These compounds have their own unique properties and applications.

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The molarity of the CaCl₂ solution, which contains 2.5 moles of CaCl₂ in one liter, is 2.5 mol/L.

Molarity is a measure of the concentration of a solute in a solution, expressed as the number of moles of solute per liter of solution (mol/L). In this case, the given information states that one liter of the CaCl₂ solution contains 2.5 moles of CaCl₂.

To calculate the molarity, we divide the number of moles of solute (CaCl₂) by the volume of the solution in liters (1 L):

Molarity = Number of moles of solute / Volume of solution (in liters)

Molarity = 2.5 moles / 1 L

Molarity = 2.5 mol/L

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Answer:

Explanation:

Sleet and freezing rain occur under very similar conditions. Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets.

Answer:

c is not a true statement

Answer: it’s

Earth gravity keeps all the planets spinning around the sun.

Explanation:

Got it right

Answer:

Solvent

Explanation:

When one substance dissolves into another, a solution is formed. A solution is a homogeneous mixture consisting of a solute dissolved into a solvent

Elements with unpaired electrons are known as paramagnetic elements.  Paramagnetic elements, which have at least one unpaired electron in their outermost shell and can be easily influenced by an external magnetic field.

Paramagnetic elements are those which have at least one unpaired electron in their outermost shell. These unpaired electrons can be easily influenced by an external magnetic field and can become magnetized, thus exhibiting paramagnetism.

Hence, In summary, elements with unpaired electrons are referred to as paramagnetic elements, which have at least one unpaired electron in their outermost shell and can be easily influenced by an external magnetic field.

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Answer:

1

Explanation:

fluorine's atomic number is 9

electronic configuration: 2,7

so it needs 1 electron to stabilise

that's why 1 covalent bond

hope it helps!!

Answer:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

Explanation:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

The nucleus (centre) of the atom has the protons (positively charged) and the neutrons (no charge).

Protons and neutrons are in the centre of the atom, creating the nucleus. Electrons wrap with the nucleus. Protons have a positive charge. Electrons have a negative charge.

Thus, The nucleus (centre) of the atom has the protons (positively charged) and the neutrons (no charge).

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Answer:

UF6

Explanation:

1) List the known quantities.

Sample:

Elements:

Silver: Ag.

Nitrogen: N.

Oxygen: three O.

The compound above has silver, nitrogen, and oxygen.

silver, nitrogen, oxygen.

Answer: Neil Armstrong

Explanation

On July 20, 1969, Neil Armstrong became the first human to step on the moon. He and Aldrin walked around for three hours. They did experiments. They picked up bits of moon dirt and rocksExplanation:

Answer:

In 1969, Neil Armstrong was the first person to reach the moon.

Explanation: