A mixture of two gases with a total pressure of 3.26 atm contains 0.70 atm of Gas A. What is the partial pressure of Gas B in atm?

Answer:

123.1L

Explanation:

Given parameters:

Molarity of Cu(NO₃)₂  = 0.650M

Mass of  Cu(NO₃)₂ = 15g

Unknown:

Volume of  Cu(NO₃)₂ = ?

Solution:

To solve this problem, we have to first find the number of moles of the given mass;

  Number of moles of Cu(NO₃)₂  = \(\frac{mass}{molar mass}\)

   Molar mass of Cu(NO₃)₂  = 63.5 + 2 (14 + 3(16)) = 187.5g/mol

 Number of moles of Cu(NO₃)₂  = \(\frac{15}{187.5}\)  = 0.08 mol

Molarity is given as;

  Molarity  = \(\frac{number of moles }{volume}\)  

         Volume  = \(\frac{number of moles }{molarity }\)  

  Insert the parameters and solve;

        Volume  = \(\frac{0.08}{0.65}\)  = 0.12L

Now mL;

         1L  = 1000mL

        0.12L will give 1000 x 0.12  = 123.1L

Answer:

1. Percentage yield is 64.75%

2. Atom economy is 48.39%

Explanation:

1. Determination of the percentage yield

Experimental yield = 24.8 g

Theoretical yield = 38.3 g

Percentage yield =?

Percentage yield = Experimental yield /Theoretical yield × 100

Percentage yield = 24.8 / 38.3 × Percentage yield = 2480 / 38.3

Percentage yield = 64.75%

2. Determination of the atom economy.

The balanced equation for the reaction is given below:

6CO₂ + 6H₂O —> C₆H₁₂O₆ + 6O₂

Next, we shall determine the mass of CO₂, H₂O and C₆H₁₂O₆ from the balanced equation.

Molar mass of CO₂ = 12 + (16×2)

= 12 + 32

= 44 g/mol

Mass of CO₂ from the balanced equation = 6 × 44 = 264 g

Molar mass of H₂O = (2×1) + 16

= 2 + 16

= 18 g/mol

Mass of H₂O from balanced equation = 6 × 18 = 108 g

Molar mass of C₆H₁₂O₆ = (6×12) + (12×1) + (6×16)

= 72 + 12 + 96

= 180 g/mol

Mass of C₆H₁₂O₆ from the balanced equation = 1 × 180 = 180 g

Next, we shall determine the total mass of the reactants. This is illustrated below:

Mass of CO₂ = 264 g

Mass of H₂O = 108 g

Total mass of reactants =?

Total mass of reactant = Mass of CO₂ + Mass of H₂O

Total mass of reactant = 264 + 108

Total mass of reactant = 372 g

Finally, we shall determine the atom economy. This can be obtained as follow:

Mass of desire atom (C₆H₁₂O₆) = 180 g

Total mass of reactants = 372 g

Atom economy =.?

Atom economy = mass of desire atom / total mass of reactant × 100

Atom economy = 180/372 × 100

Atom economy = 48.39%

Total number of moles are 8.33

Here we are given with a compound of carbonyl sulfide (COS) and we have to calculate the number of moles present in this compound

so given mass of compound=500 grams

Molar mass of the compound= (molar mass of carbon) x (number of carbon atoms) + (molar mass of oxygen atom) x (number of oxygen atom) + (molar mass of Sulphur) x (number of Sulphur atoms)

Now we know that

Now substituting the values in our formula, we get,

Molar mass of compound = 12x1 + 16x1 + 32x1

Molar mass of compound =12+16+32=60 amu or 60 grams

Now since we know that moles = total mass of substance / molar mass

therefore, we get,

number of moles= 500/60 = 8.33 moles

so, number of moles are 8.33.

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Answer:

Exothermic reaction!

Explanation:

Exo -> Releases Heat

Endo -> Absorbs Heat

Answer:

ftb

Explanation:

The new planet is suitable for human life because it is similar to planet earth.

The new planet has similar atmosphere just like the earth's atmosphere. It has large amount of vegetation that can hold large amount of animals. It is suitable for growing for different crops that provide food to humans.

So we can conclude that the new planet is suitable for human life because it is similar to planet earth.

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Look at the mole ratio in the balanced equation

2CO + O2 ==> 2CO2

3.44 mol O2 x 2 mol CO/mol O2 = 6.88 moles CO

To solve this problem using the gas laws, we need to use the Ideal Gas Law. This law states that the product of the pressure and the volume of a gas is proportional to the absolute temperature.

The equation of the Ideal Gas Law is the following:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\dfrac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2} } \end{gathered}$} }\)

Where:

We clear for V₂:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{P_1V_1T_2}{P_2T_1 } } \end{gathered}$} }\)

Where:

Substituting the known values:

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{760\not{kPa}\times0.050 \ L\times20.0\not{k} }{ 380\not{kPa}\times10.0\not{k} } } \end{gathered}$} }\)

\(\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2=\frac{760 \ L}{3800 } } \end{gathered}$} }\)

\(\boxed{\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{V_2\approx0.2 \ Liters} \end{gathered}$} }}\)

Answer:

1) (5 moles of calcium bromide) x 2 / 1 = 10 moles

2) (2.00 moles of calcium bromide) = 2.00 moles of calcium sulfate

so (2.00) x (136.1 g/mol) = 272.2 g

3) (845 grams of calcium sulfate) /  136.14 g/mol = 6.21 moles

6.21 moles of calcium sulfate = 6.21 moles of calcium bromide

(6.21 moles of calcium bromide) x 199.89 g/mol = 1241.32 g

The first reaction is a first order reaction and the unit of rate constant is s⁻¹. The second one is also a first order reaction with the same unit. Third one is a third order reaction with the unit for k as L² mol⁻² s⁻¹.

Rate of a reaction is the rate of decrease in concentration of the reactants or increase in concentration of the products. The rate is directly proportional to the concentration of reactants and the rate law is written as:

rate = k [reactants]

where, the proportionality constant k is called the rate constant.

The order of a reaction is the sum of powers of the molar concentration of reactants. Thus, each reaction vary in order and the order of reaction also depends on the steps in the reaction.

The general formula of the unit of rate constant is L⁽ⁿ⁻¹⁾ mol⁽¹⁻ⁿ⁾ s⁻¹. Hence,  first reaction is a first order reaction and the unit of rate constant is s⁻¹. The second one is also a first order reaction with the same unit.

Third one is a third order reaction with the unit for k as L² mol⁻² s⁻¹. The fourth one is a second order reaction. Thus, unit of rate constant is L mol⁻¹ s⁻¹.

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Answer:

3/4 miles

Expanation:Because 9+3/4 is 3/4 miles

The statement that best describes how the radioactivity was distributed in one of the first molecules of Protein X that was completely translated is B. Radioactive amino acids were located only at one end of the molecule.

Protein X was one of the first molecules to be completely translated, and the distribution of its radioactivity was unique. Radioactive amino acids were not dispersed throughout the molecule, but instead were located only at one end of the molecule.

This means that the statement B best describes how the radioactivity was distributed in one of the first molecules of Protein X that was completely translated.

With this knowledge, we can be sure that the radioactivity was not evenly distributed throughout the molecule, but was instead concentrated at one end.

This information provides us with a better understanding of the structure of Protein X, and how it is different from other molecules.

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The statements which is true is the atomic mass will be between 35 and 37.

Isotopes can be defined as the tittles of identical rudiments that are composed of the same number of electrons and protons but differ in case of the number of neutrons. Since the number of neutrons is different in colorful isotopes of an element so, their infinitesimal millions also vary. still, the infinitesimal number remains the same as no change occurs in protons number.

Chlorine is an element in the periodic table with infinitesimal number 17 and is represented with the symbol Cl. The element nickel has colorful isotopes. One of the isotopes of chlorine is chlorine- 35 and another bone is chlorine-37 which is present in a rate of 75.8% and24.3%.

The average atomic mass of chlorine;

Average atomic mass

=(Fractional abundance of 35Cl) × (Molar Mass of 35Cl) +(Fractional abundance of 37Cl) × (Molar Mass of 37Cl)

=75.8100 × 35u + 24.3100 × 37u

=26.53u + 8.991u

=35.521 u

The average atomic mass of chlorine is 35.521 u.

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Answer:

The answer is D.

Explanation:

Hold the styrofoam ball at arm's length from the eye.

Mechanical disintegration means breaking into small pieces (option A).

Digestion is the process occuring in the gastrointestinal tract, by which food is converted into substances that can be utilized by the body.

Digestion can, however, be mechanical/physical or chemical/enzymatical. The mechanical digestion involves the breaking down of food into smaller pieces by teeth.

Therefore, according to this question, there is no passage, however, the meaning of mechanical disintegration can be easily detected in biology.

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The species that is oxidized and the species that is reduced in the reaction are: \(Cl_{2}\) is oxidized and \(I^{-}\)is reduced.

What are the species?

The species in a chemical reaction are the reactants and products involved in the reaction. The reactants are the substances that undergo a chemical change, while the products are the substances that are formed as a result of the chemical change.

What are the substances?

Substances refer to the chemical elements or compounds that make up the reactants and products in a chemical reaction.foe example, Hydrogen gas and oxygen gas are the reactants, while water is the product.

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Complete question is: The species that is oxidized and the species that is reduced in the reaction are: \(Cl_{2}\) is oxidized and \(I^{-}\)is reduced.

Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

sodium ion

Explanation:

And, so if we gots a representation of Na+ , or Cl− , we know that for the sodium ion, while there are 11 charged nuclear particles (how do we know this?), there are 10 charged extranuclear particles, 10 electrons.

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Answer 1:

During the summer months in the northern hemisphere (where the United States is located), Earth is in position C, which is when the northern hemisphere is tilted towards the sun.

Answer 2:

The highest tide occurs during the full moon phase, which is represented by position C in the diagram.

Answer 3:

A star that has a luminosity of 10^-2 is likely a red dwarf.

Answer 4:

Telescopes that observe short-wavelength radiation, such as X-rays and gamma rays, do not need to be placed in orbit around Earth because these wavelengths are absorbed by the atmosphere. Therefore, telescopes that observe these wavelengths are typically placed in space, outside of Earth's atmosphere.

Answer 5:

The student is likely demonstrating the relationship between the Earth and the Sun's gravitational pull. The ball represents the Sun, and the string represents the gravitational force pulling the Earth towards the Sun. The demonstration shows how the Earth orbits the Sun due to this gravitational force.

Gravitational force is described as a force that exists between any two objects in the universe that have mass.

It is the force that causes objects with mass to be attracted to each other. The magnitude of the gravitational force between two objects depends on their masses and the distance between them.

Along with the electromagnetic force, the strong nuclear force, and the weak nuclear force, gravity is one of the four fundamental forces of the universe.

Sir Isaac Newton initially introduced it in his law of universal gravitation, and Albert Einstein later elaborated on it in his theory of general relativity.

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The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Answer:

0.25 mol

Explanation:

Use the formula n=N/NA

n= number of mols

N =  number of particles

Nᵃ = Avogadros constant = 6.02 x \(\\10^{23\)

So, n= \(\frac{1.505 X 10^{23} }{6.02 X 10^{23}}\)

The 10 to the power of 23 cancels out and you are left with 1.505/6.02, which is approximately 1/4. This is the same as 0.25 mol.

Hope this helped :)

Answer:

physical change because the gaseous water is chemically the same as the liquid

Explanation:

Matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.

Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.

A physical change can be defined as a type of change that only affects the physical form of a chemical substance (matter) without having any effect on its chemical properties. Thus, a physical change would only affect the physical appearance and properties of a chemical substance (matter) but not its chemical properties.

This ultimately implies that, a physical change result in a change of matter from one form or phase (liquid, solid or gas) to another without a corresponding change in chemical composition.

Hence, the boiling of water is considered to be a physical change because the gaseous water is chemically the same as the liquid i.e there isn't any changes in chemical composition of water when boiling.

Without the specific figure 6.15, I am unable to provide an exact answer to this question. However, the energy of an electron in an atom is determined by its principal quantum number (n).

Which represents the electron's energy level. The energy of an electron increases as its principal quantum number increases.

The energy of an electron in a particular energy level (n) can be calculated using the formula: E = -13.6 eV/n^2, where eV represents electron volts. This formula is derived from the Bohr model of the atom.

So, if an electron in a lower energy level (such as n=2) is promoted to a higher energy level (such as n=6), the energy of the electron increases accordingly. The energy of the electron in its new energy level can be calculated using the formula above.

Note that the energy levels of electrons in real atoms are more complex than the simplified Bohr model, and the energy of an electron is influenced by many factors beyond its principal quantum number.

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The correct option for the catalyzed decomposition for given dinitrogen monoxide are- A. 1, 2, and 4

Nitrous oxide, also referred to as laughing gas, nitrous, simply nos, is a chemical substance that has the formula N2O and is also known as dinitrogen oxide as well as dinitrogen monoxide.

The fundamental procedures for dinitrogen monoxide's catalyzed breakdown are:

N2O (g) + NO (g) → N2 (g) + NO2 (g)

2 NO2 (g) → 2 NO (g) + O2 (g)

Thus, the correct statements are-

1. The overall balanced reaction is 2 N2O (g) → 2 N2 (g) + O2 (g).

2. NO (g) is a catalyst for the reaction.

4. NO2 (g) is a reaction intermediate.

Therefore, A. 1, 2, and 4 is the correct option.

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Answer:

The speed of the given electromagnetic wave is  3 x 10⁸ m/s.

Explanation:

Electromagnetic wave is a type of energy that is commonly known as light energy. The speed of light in air is about 3 x 10⁸ meters per second (m/s).

All electromagnetic waves travel at the same speed which is equal to speed of light, approximately  3 x 10⁸ meters per second (m/s) through a vacuum or air.

Therefore, the speed of the given electromagnetic wave is  3 x 10⁸ m/s.

The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

28.83dm³

Explanation:

Using ideal gas equation

PV=nRT

P=2.80atm

n=2.30

R=0.082

T=155°C (155+273=428Kelvin)

V=nRT/P

V=2.30×0.082×428/2.80

V=28.83dm³

Answer:

Explanation:

Thus, negative beta decay results in a daughter nucleus, the proton number (atomic number) of which is one more than its parent but the mass number (total number of neutrons and protons) of which is the same. For example, hydrogen-3 (atomic number 1, mass number 3) decays to helium-3 (atomic number 2, mass number 3)

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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