Phosgene (COCl2) is a poisonous gas that dissociates at high temperature into two other poisonous gases, carbon monoxide and chlorine. The equilibrium constant, Kp = 0.0041 at 600. Find the equilibrium composition of the system after 0.232 atm of COCl 2 is allowed to reach equilibrium at this temperature. What is the partial pressure of COCl2 at equilibrium in atm atm?

Answer:

There is only one possible value for the quantity "c"

Explanation:

There is only one possible value for the quantity "c". This is because the a,b,c and d represent number of moles in he balanced equation. And since the number of moles of a particular substance (atom or compound) in a balanced equation must be distinct, it (the substance) can only have one value. For example, consider the equation below

2C₂H₂ + 5O₂ ⇒ 4CO₂ + 2H₂O

It can be seen from the above equation that the individual number of moles are distinct and have just one possible value. And if C₂H₂ is A, O₂ is B, CO₂ is C and H₂O is D, then 4 is "c".

Thus, "c" is the number of moles for the substance "C" with just one possible value.

Answer:

Closed-toe shoes, long pants, a lab coat, safety glasses with side shields or splash goggles, and gloves.

Explanation:

Answer:Tennis ball?

Explanation:

Well, an example would be DNA so a non-example could be a tennis ball. Or anything that isn't nucleic acids like lipids, perhaps.

The principle of option D. Uniformitarianism states that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the

Option D. Uniformitarianism is the principle stating that the physical, chemical, and biological processes at work shaping the Earth today have also operated in the geologic past. It is based on the idea that the present is the key to the past. In other words, the same natural laws that operate in the universe today have been operating since the beginning of time.

James Hutton was the first to propose this principle in the late 18th century. He suggested that the Earth was shaped by slow-acting geological forces such as erosion, sedimentation, and uplift over long periods of time. He believed that the same processes were still happening today and that they had operated in the past.

This principle is an important concept in geology because it allows scientists to interpret the Earth's history based on the processes that they observe today. By understanding how these processes work and how they have changed over time, scientists can reconstruct the history of the Earth and its environments.

Uniformitarianism has been tested and proven through many observations and experiments. For example, the study of sedimentary rocks has shown that they were formed in the past through the same processes that are observed today, such as deposition of sediment by water, wind, or ice.

Similarly, the study of volcanoes has shown that they are formed by the same processes as today, such as the movement of magma from deep within the Earth.

In conclusion, Uniformitarianism is the principle that allows us to interpret the Earth's history by observing the processes that shape it today. It is a fundamental concept in geology and has been tested and proven through many observations and experiments.

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Explanation:

Without even doing any calculations I would say that the 20 g HNO3 is limiting

But let us check if my opinion is correct

Balanced equation:

CaO(s) + 2HNO3 (aq) → Ca(NO3)2 (aq) + H2O(l)

1 mol CaO reacts with 2 mol HNO3

Molar mass CaO = 56 g/mol

Mol CaO in 615 g = 615 g / 56 g/mol = 10.98 mol

This will react with 10.98 * 2 = 21.96 mol HNO3

Molar mass HNO3 = 63 g/mol

Mol HNO3 in 20 g = 20 g / 63 g/mol = 0.317 mol

Clearly - my original idea correct - HNO3 is limiting .

The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants. Here the mass of calcium nitrate formed is 16.82 g.

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents. They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

The limiting reactant determines the maximum amount of product that can be formed from the reactants when reactants are not present in stoichiometric quantities.

Here the equation is:

CaO + 2HNO₃ → Ca (NO₃)₂ + H₂O

'n' of CaO = 15 / 56 = 0.267 mol

n of HNO₃ = 20 / 63 = 0.317 mol

1 mol of CaO 2 moles of HNO₃

0.267 mol = 0.267 × 2 = 0.534 mol

So HNO₃ is the limiting reactant.

0.267 mol CaO gives 0.267 mol Ca (NO₃)₂

Mass of HNO₃ = 0.267 × 63.01 = 16.82 g

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The pH of a solution that has a concentration of \(2.78 * 10^{-3}\)M is 2.56. The aqueous solution is acidic because it is less than 7 on the pH scale.

pH is a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.

The pH is equal to −log {H}

According to this question, \(2.78 * 10^{-3}\) of hydrogen bromide is given. The pH can be estimated as follows:

pH = \(- log\) {\(2.78 * 10^{-3}\)}

pH = 2.56 (acidic)

The complete question is as follows:

What is the hydronium ion concentration for an aqueous solution with a hydroxide ion concentration of 2.78x10^-10 M? Is the solution acidic basic or neutral?

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{7.1 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 117.940199...\)

We have the final answer as

Hope this helps you

The type of model does the information given represent is particle model.

The particle theory of matter is a model that describes the arrangement and movement of particles in a substance.

The model is used to explain the physical properties of solids, liquids and gases.

The given chemical equation;

2C(s) + 4H₂(g) + O₂(g) → 2CH3OH

Thus, the type of model does the information given represent is particle model.

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Answer:

C: 10m

Explanation:

Work Done = Force x Distance

500 = 50 x Distance

To get to 500 multiply 50 by 10!

So, the box slid 10m.

Hope this helps and have a good day! ;D

Answer:

2N2 + 5O2 + 2H2O → 4HNO3

Explanation:

Dinitrogen - N2

N₂ Nitrogen Gas Nitrogen Diazyne

Molar Mass of N2 Bond Polarity of N2

Dioxygen - O2

O₂ Oxygen Molecular Oxygen Diatomic Oxygen Triplet Oxygen Oxygen Gas Liquid Oxygen LOx

Molar Mass of O2 Bond Polarity of O2

Water - H2O

Dihydrogen Monoxide Dihydridooxygen [OH2] HOH Hydrogen Hydroxide Dihydrogen Oxide Oxidane Hydrogen Oxide

Molar Mass of H2O Oxidation State of H2O

Products

Nitric Acid - HNO3

Spirit Of Niter Fuming Nitric Acid Aqua Fortis Engravers Acid Hydrogen Nitrate HONO2 Peroxynitrous Acid [NO(OOH)]

Molar Mass of HNO3 Oxidation State of HNO3

Answer:

the answer is e opinion

Answer: D

Explanation: the cell is the least complex, cells make tissues, tissues make organ, organs make organ systems, organ systems make organisms

The molar mass of the gas, given that 0.250 g of the gas is collected at 150.0 °C and 720 mmHg is 108.7 g/mol

First, we shall obtain the mole of the gas collected. This is shown below:

PV = nRT

0.947 × 0.085 = n × 0.0821 × 423

Divide both sides by (0.0821 × 423)

n = (0.947 × 0.085) / (0.0821 × 423)

n = 0.0023 mole

Finally, we shall obtain the molar mass of the gas. This is shown below:

Molar mass = mass / mole

Molar mass of gas = 0.250 / 0.0023

Molar mass of gas = 108.7 g/mol

Thus, the molar mass of the gas collected is 108.7 g/mol

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First, we need to calculate the mass of jellybeans alone.

Mass of Jellybeans + Jar = 1642 grams

Mass of Jar ONLY = 495 grams

Mass of Jellybeans = Mass of Jellybeans + Jar - Mass of Jar ONLY

Mass of Jellybeans = 1642 g - 495 g

Mass of Jellybeans = 1147 g

Next, we need to find the mass of one jellybean.

Mass of 20 Jellybeans = 7.94 grams

Mass of 1 Jellybean = Mass of 20 Jellybeans ÷ 20

Mass of 1 Jellybean = 0.397 g

Finally, we can estimate the number of jellybeans in the jar by dividing the total mass of jellybeans by the mass of one jellybean.

Number of Jellybeans = Mass of Jellybeans ÷ Mass of 1 Jellybean

Number of Jellybeans = 1147 g ÷ 0.397 g

Number of Jellybeans ≈ 2891

Therefore, there are approximately 2891 jellybeans in the jar.

Answer:

mass of jellybeans + jar = 1642 g

mass of jar = 495 g

mass of jellybeans alone = 1642 - 495 = 1147g

mass of 20 jellybean= 7.94 g

mass of 1 jellybean= 7.94 ÷ 20 = 0.397 g

total number of jelly beans = 1147 ÷ 0.397 = 2889

There are approximately 2889 jellybeans in jar

Answer:

2.04 g/cm3

Explanation:

Density = mass ÷ volume

= 5100 ÷ 2500

=2.04 g/cm3

The amount of the heat in kJ , would be involved in the condensing 12.9v g of the CH₃OH  is the 15.2 kJ.

Given that :

The mass of the CH₃OH = 12.9 g

The ΔH = 38 kJ/mol

The molar mass = 32 g/mol

The number of the moles = mass / molar mass

The number of the mole = 12.9 / 32

                                         = 0.403 mol

The number of the moles is 0.403 mol

The amount of the heat is given as  :

Q = n ΔH

Q = 0.403 × 38

Q = 15.2 kJ.

Thus, the amount of the heat is 15.2 kJ.

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The coordination number of the Ti4+ ion in the ideal barium titanate (BaTiO3) structure is 6.

In the ideal BaTiO3 structure, each Ba2+ ion is surrounded by 12 O2− ions, forming a cubic close-packed arrangement. The Ti4+ ion occupies the center of a unit cell, and it is surrounded by six O2− ions, located at the vertices of an octahedron. This coordination number is determined by counting the number of nearest-neighbor oxygen ions around the Ti4+ ion.

The octahedral coordination of the Ti4+ ion in BaTiO3 is typical for transition metal ions with an oxidation state of +4. This coordination geometry allows the Ti4+ ion to achieve maximum electrostatic stability and minimize its energy by sharing electrons with the surrounding oxygen ions. In addition, the octahedral coordination provides the Ti4+ ion with a high degree of symmetry, which is important for the ferroelectric and piezoelectric properties of BaTiO3.

In summary, the coordination number of the Ti4+ ion in the ideal BaTiO3 structure is 6, which corresponds to an octahedral arrangement of six nearest-neighbor oxygen ions.

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Step 1

The reaction must be completed and balanced as follows:

C3H8 + 5 O2 => 3 CO2 + 4 H2O

-------------

Step 2

Information provided:

20.0 g of C3H8

10.0 g of O2

----

Information needed:

1 mole of C3H8 = 44.1 g

1 mole of O2 = 32.0 g

(use your periodic table please)

-------------

Step 3

By stoichiometry,

C3H8 + 5 O2 => 3 CO2 + 4 H2O

44.1 g C3H8 ---------- 5 x 32.0 g O2

20.0 g C3H8 ---------- X

X = 20.0 g C3H8 x 5 x 32.0 g O2/44.1 g C3H8

X = 72.6 g O2

For 20.0 g of C3H8, 72.6 g of O2 is needed, but there is only 10.0 g of O2.

Therefore,

Answer:

The limiting reactant = O2

The excess = C3H8

Answer: A

Explanation: A

To solve this problem, let's use the definition for molarity:

Replacing the values of the problem:

Now, to find the mass, we multiply by the molecular weight of NaCl. (Which is about 58.44g/mol)

The answer is approximately 22.2g of NaCl

Answer:

Explanation:

Here, we want to get how the final digit in a measurement is obtained

Mathematically, the final digit can be obtained by estimation

Hence, we say that the value is uncertain

The final digit is obtained by a mark or between the last mark and the next mark in a measurement

Thus, we call this value uncertain since it is estimated

The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in litres.
Therefore, the molarity of the H₂CO solution is 13.30 mol/L.

In this case, we have 5.50 L of a 13.3 M H₂CO solution. To find the molarity, we need to calculate the number of moles of H₂CO and divide it by the volume of the solution.

The formula weight of H₂CO is 30.03 g/mol. To convert from molarity to moles, we multiply the molarity by the volume in liters:

13.3 mol/L × 5.50 L = 73.15 mol

So we have 73.15 moles of H₂CO in 5.50 L of solution.

Finally, to find the molarity, we divide the number of moles by the volume of the solution:

73.15 mol ÷ 5.50 L = 13.30 mol/L

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The result of a chemical reaction or a process stage is a product (reaction product). a component of the reaction or mechanism stage that is not a substrate, reactant, reagent, beginning substance, or starting combination.

The organisms that result from chemical interactions are called products.  Reactants undergo a high energy transition stage during a chemical process before becoming products. The reactants are consumed as a result of this process. It can occur spontaneously or be facilitated by catalysts, which reduce the energy of the transition state, and solvents, which provide the favorable molecular conditions for the reaction to occur.

Even in the case of reversible reactions, it is customary to draw products on the right side of chemical equations. Several characteristics of a chemical reaction, such as whether the reaction is exergonic or endergonic, are determined by the properties of products, such as their energies.

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Answer:

D

Explanation:

NO is the molecule nitrogen monoxide while No is the atomic symbol for the element nobelium

X is the chemical symbol of the element

Answer:

there is none

Explanation:

your thinking of the symbol for chemical symbol for the element

Acetals can be hydrolyzed using catalytic acid to produce a carbonyl compound and alcohol. If the acid concentration is increased, acetal can be hydrolyzed back to its initial aldehyde or ketone form.

This mechanism occurs in the opposite direction of the acetal formation mechanism. The hydrolysis of each acetal generates a carbonyl compound and an alcohol.What are Acetals?Acetals are organic compounds that are formed by the reaction of an aldehyde or ketone with two molecules of alcohol, and they have the following general structure: R1R2C(OR')2.Acetals can be regarded as derived from hemiacetals, which are formed by the reaction of an aldehyde or ketone with one molecule of alcohol.The carbonyl carbon in an acetal is bonded to two alkoxide (OR) groups, while the carbonyl carbon in a hemiacetal is bonded to only one. As a result, acetals are more stable than hemiacetals. Acetals are widely used in organic synthesis, including as protecting groups for carbonyl groups in reactions that would otherwise destroy them.Example:Acetal hydrolysis occurs when an acid catalyst is used to cleave the two ether bonds in the molecule. When an acetal is hydrolyzed with an acid catalyst such as H2SO4, a carbonyl compound and an alcohol are formed.Example:H2SO4 is added to the acetal, which hydrolyzes it, producing an aldehyde or ketone and two alcohol molecules. For example, if dimethyl acetal is hydrolyzed, it will yield acetone and two methanol molecules.

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a)Igneous rocks, b)Sedimentary rocks c)heat and pressure d)cooling e)weathering/erosion f)heat and pressure, g)compaction/cementation

Under great heat and pressure, the magma that is formed from the volcanoes or earth surfaces forms the a)igneous rocks. The d)cooling of magma produces igneous rocks. These igneous rocks under great heat and pressure form metamorphic rocks.

Through the process of e) weathering and erosion, both igneous and metamorphic rocks turn to form sediments which on g)compaction and cementation form b) sedimentary rocks.

In this cycle rocks of different types are formed through various geological processes. Depending upon the external conditions the size and structure of rocks are determined. However, under great c)pressure and heat metamorphic rocks turn to form magma and form igneous rocks. Likewise, sedimentary rocks under f) heat and pressure form metamorphic rocks.

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