how many moles of co2 are present in 0.200 l of a 0.400 m solution of coi2? group of answer choices 0.160 0.0400 2.00 0.0800 0.500

The molarity of the sulfuric acid that reacted with sodium hydroxide is 0.12 M.

In stoichiometry problems, first, we have to make the chemical reaction. The reaction between sodium hydroxide (NaOH) and sulfuric acid (H₂SO₄)

2 NaOH + H₂SO₄ → Na₂SO₄ + 2 H₂O

For NaOH

According to Avogadro's law, the coefficient of NaOH and the coefficient of H₂SO₄ is the ratio for the number of moles.

n NaOH : n H₂SO₄ = 2 : 1

n H₂SO₄ = n NaOH ÷ 2

n H₂SO₄ = 6.055 mmol ÷ 2

n H₂SO₄ = 3.0275 mmol

For H₂SO₄

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The bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

Bond order is defined as the number of electrons in bonding molecular orbitals minus the number of electrons in antibonding molecular orbitals divided by two. As a result, we may determine the bond order of this diatomic particle by the formula: Bond order = (number of bonding electrons - number of antibonding electrons) / 2

Bond order = (8 - 5) / 2

Bond order = 1.5.

This diatomic molecule, according to the bond order, is a stable molecule since the bond order is greater than 1, indicating that it is a double bond. The molecule has an overall bond strength that is greater than a single bond, but not as strong as a triple bond. So therefore he bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

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Answer:

Option B, Silicon

Explanation:

The valency of Carbon is 4 as it has four electrons in its outermost shell

The valency of Si is also four hence C

Hence Silicon can form 1:1 bond with the carbon

Valency of Beryllium is 2, hence it can not form 1:1 bond with carbon. Similarly the valency of oxygen and carbon are way different to form 1:1 bond

hence, only option B is correct

Answer:

The amount of energy produced is less than 454 kJ.

Explanation:

I do not know but if am wrong you can correct me. I need your help for business, english and chemistry questions on my profile. So can you and the other person who commented and go on my profile please...? the due date already gone 12 days ago.

Answer:

Chemistry

Explanation:

Chemistry is considered the central science.

Chemistry is sometimes called "the central science" because it's so important to other fields of science, like biology, geology, astronomy, physics, medicine, engineering, materials science, and many other areas of study.

All the branches of science possess their own level of importance, However, physics deals with the fundamental workings of material reality which are central to all other branches of science.

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The flask may not be completely dry on the outside after vaporization takes place, but it's important to ensure that it is dry before weighing the volatile liquid to obtain an accurate measurement.

When a volatile liquid undergoes vaporization, it converts from a liquid state to a gaseous state. During this process, the liquid absorbs heat from its surroundings, causing it to evaporate. As the vapor escapes from the flask, it leaves behind some liquid on the walls of the flask. This liquid can either evaporate on its own or be removed by wiping the flask with a clean, dry cloth.

However, even after wiping the flask, some moisture may still remain on the outside of the flask. This can be due to several factors, such as humidity in the air, condensation from the flask's contents, or incomplete drying from the wiping process. It's important to ensure that the flask is completely dry before weighing the volatile liquid, as any residual moisture can affect the accuracy of the measurement.

To ensure that the flask is completely dry, one can use a heat source such as an oven or a hot plate to evaporate any remaining moisture. Alternatively, one can weigh the flask before and after drying to determine if any moisture has been removed. Once the flask is completely dry, it can be weighed with the volatile liquid to obtain an accurate measurement.

In summary, the flask may not be completely dry on the outside after vaporization takes place, but it's important to ensure that it is dry before weighing the volatile liquid to obtain an accurate measurement.

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Answer: The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river.

Explanation:

Answer:

The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river

Explanation:

Answer:

EZ PM MO LANG AKO

Explanation:

BASTA PM MO AKO

The diffusion coefficient for p type Germanium at T =300 K if you know that the carrier impurities equals to 10¹cm-³ is  16.1 cm²/s.

In semiconductors, the diffusion coefficient is a measure of how quickly dopant atoms diffuse into the host material. In Germanium, the diffusion coefficient is found using the equation below.Using the formula below, we can determine the diffusion coefficient for p-type Germanium at T=300K.Dn= (KbTq)/µnIt is essential to note that for p-type dopant, the mobility value is different from the electron value.

The electron mobility value is µn while the hole mobility value is µp. Using the information provided in the question that the carrier impurities equal to 10¹ cm-³ and the temperature, we can use the following values to calculate the diffusion coefficient for p-type Germanium at T=300K. Dp = (KbTq)/µp (Nd) = (1.38 × 10−23 J/K × 300 K × 1.6 × 10−19 C)/( 1600 cm²/Vs) (10¹ cm-³) = 16.1 cm²/s.

Therefore, the diffusion coefficient for p-type Germanium at T=300 K with carrier impurities equals to 10¹cm-³ is 16.1 cm²/s.

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Considering the energy diagram for an exothermic reaction, the expectations for the reverse reaction is: (c) The reverse reaction would be endothermic and require a higher activation energy.

In an exothermic reaction, the products have lower energy than the reactants, resulting in the release of energy. The energy diagram for an exothermic reaction typically shows a downward slope from the reactants to the products, with the energy of the products being lower than the energy of the reactants.

When considering the reverse reaction of an exothermic reaction, it would involve the conversion of products back into reactants. Since the energy diagram for the forward reaction shows a decrease in energy from reactants to products, the reverse reaction would be expected to have an increase in energy from products to reactants.

In the reverse reaction, energy would need to be absorbed from the surroundings, making it an endothermic process. Additionally, the activation energy for the reverse reaction is expected to be higher because the reverse reaction has to overcome a higher energy barrier to convert the products back into the reactants.

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E. The moles of oxygen gas remaining in the firing bomb after the combustion reaction is complete is 2.633 mol O2.

F. The mass of water in the entire container after the combustion reaction is complete is 10.4 kg

To calculate the moles of oxygen gas remaining in the firing bomb after the combustion reaction is complete, we first need to calculate the amount of oxygen gas consumed during the reaction. The balanced chemical equation for the combustion of lactic acid (s) is:

C3H6O3(s) + 4 O2(g) → 3 CO2(g) + 3 H2O(l)

From the balanced equation, we can see that each mole of lactic acid reacts with 4 moles of oxygen gas. Therefore, the number of moles of oxygen gas required for the combustion of 120.0 g of lactic acid is:

n(O2) = (4 mol O2/1 mol C3H6O3) x (120.0 g C3H6O3/90.08 g/mol C3H6O3) = 1.597 mol O2

Since there were 4.23 moles of oxygen gas initially present, the number of moles of oxygen gas remaining after the reaction is:

n(O2 remaining) = 4.23 mol O2 - 1.597 mol O2 = 2.633 mol O2

Therefore, the moles of oxygen gas remaining in the firing bomb after the combustion reaction is complete is 2.633 mol O2.

F. To calculate the mass of water in the entire container after the combustion reaction is complete, we need to consider the water in the calorimeter water jacket as well as the water produced by the combustion of lactic acid. The heat released by the combustion of lactic acid is absorbed by the water in the calorimeter, raising its temperature. The amount of heat absorbed by the water can be calculated using the following equation:

q = C × ΔT

where q is the heat absorbed (in joules), C is the heat capacity of the water (in J/(g·K)), and ΔT is the change in temperature (in K).

The heat absorbed by the water is equal to the heat released by the combustion of lactic acid, which can be calculated using the heat of combustion per gram of lactic acid:

ΔHc = -1364 kJ/mol (given)

The heat released by the combustion of 120.0 g of lactic acid is:

q = (ΔHc/mol) × (120.0 g/90.08 g/mol) = -1814 kJ

Note that the negative sign indicates that heat is being released by the system (the combustion of lactic acid).

Since all of the heat released by the combustion is absorbed by the water, we can equate the heat absorbed by the water to the heat released by the combustion:

Cwater × mwater × ΔT = -1814 kJ

where Cwater is the heat capacity of water, mwater is the mass of water in the calorimeter, and ΔT is the change in temperature of the water.

We know that the initial temperature of the water in the calorimeter is 15.0 °C and the peak temperature reached after the combustion reaction is 56.5 °C. Therefore, the change in temperature of the water is:

ΔT = 56.5 °C - 15.0 °C = 41.5 °C = 41.5 K

The heat capacity of water is 4.18 J/(g·K), so we can solve for the mass of water in the calorimeter:

mwater = -1814 kJ / (4.18 J/(g·K) × 41.5 K) = 10.4 kg

Therefore, the mass of water in the entire container after the combustion reaction is complete is 10.4 kg

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According to quantum theory, the size of an atomic orbital is most directly associated with the principle quantum number (n). The correct option is a).

The principle quantum number describes the energy level of an electron in an atom, and as the value of n increases, the electron's energy and distance from the nucleus also increase. This means that the larger the value of n, the larger the size of the orbital.

The other quantum numbers, such as the angular momentum quantum number (l), the magnetic quantum number (ml), and the spin quantum number (ms), are all related to other properties of the electron, such as its shape, orientation, and spin, but they do not directly influence the size of the orbital.

Therefore, the principle quantum number is the most important factor in determining the size of an atomic orbital according to quantum theory.

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Answer:

A weather station

Explanation:

A weather station measures the wind speed and humidity of a specific area. GIS gives visual data that scientists can analyze, GPS gives the exact location of a weather phenomenon, and a hammer and lens allow scientists to study Earth’s geologic features.

To purpose of this experiment is 'determine how temperature affects bounce height'

Warmer ball will bounce higher than colder one

Here given data is 3 balls and height of each ball is same except  temperature

Ball A = 70˚C bounced the highest at 40cm

Ball B =  25 ˚C bounced 10cm

Ball C =  0 ˚C bounced 2cm

From the given data purpose of this experiment is to determine how temperature affects bounce height because ball A is at 70˚C means temperature is more ball bounced more at 40cm and ball B is at 25 ˚C  bounced at 10 cm and ball C is at 0 ˚C temperature at 2cm means at low temperature ball bounced low and if temperature is high then ball  bounced at high

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Answer:

A. Minerals

Explanation:

Anything that is abiotic in nature is something that isn't living. Fungi is alive, so are dogs and ants.

Answer: Minerals is the correct answer.

Explanation: Sunlight, air, precipitation, minerals, and soil are some examples of abiotic factors. These factors have a significant impact on the survival and reproduction of species in an ecosystem. Answer is confirmed correct on the test. I hope this helps! Thanks!

Carbonated beverages contain dissolved carbon dioxide gas. Low temperatures are best to minimize the solubility. option C is correct.

Drinks that have carbon dioxide dissolved in the water are referred as carbonated beverages. The presence of this gas causes the liquid to froth.

Carbonation takes place by applying pressure. Spring water, beer and soda, and pop are a few examples of carbonated beverages. When carbon dioxide  is absorbed in a liquid, for example spring water, it absorbs Carbon dioxide from the subsurface. It can also happen naturally. Beer is  example of a naturally carbonated beverage as the brewing process produces carbon dioxide soda .

Thus option C is correct.

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The repulsion of the electron pair surrounding the core atom has a significant impact on the geometry or shape of the electron.

The tendency of the electron pairs in an atom to repel one another when they are present is known as electron pair repulsion.

The more repulsion there is between the electron pairs, the more the electrons want to organize themselves to lessen it.

Here, the issue of how electron pair repulsion affects molecule geometry is raised.

The fundamental explanation is that the molecule will change its structure to keep the repelling electron pair apart.

The electron pair repulsion also plays a significant role in determining molecular geometry, since molecules prefer to modify their form and geometry in response to the electron pair.

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A solid is a state of matter in which particles are held together in a fixed position and are very close together. These particles do not move at a rapid rate, but instead vibrate in place.

This means that a solid takes the shape of its container, and also fills the volume of the container. The interactions between particles in a solid are very strong, allowing them to stay in their fixed positions. This is in contrast to the interactions between particles in a gas, which are very weak, allowing them to move freely throughout the container. A property of a solid is that it has a definite shape and volume. This means that a solid has a fixed shape and size, and it cannot be changed easily. Additionally, solids are rigid, meaning that they cannot be compressed or stretched. They also have a high density, meaning that they have a high mass per unit volume.

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Answer:

there is no change in mass

Explanation

ye

Decay of carbon-14 will forms a daughter nuclide with same mass by emitting the one beta. The resulting daughter nuclei have a lower mass and are lower in energy (more stable) than the parent nucleus that decayed.

The two general kinds of nuclear reactions are nuclear decay reactions and nuclear transmutation reactions. In a nuclear decay reaction, also called radioactive decay,

The radioactive decay of carbon-14 is as shown bellow

C¹⁴ → N¹⁴ + β−

The carbon-14 atoms undergo beta-minus decay and produce a beta particle and a nitrogen-14 atom.

Beta means, an electron.

The radioactive decay is also same as the normal reaction in organic, inorganic. Reaction is always follows the law of conservation of mass. Total mass of left hand side is equal to right hand side.

In radioactive decay, beta, gamma, alpha partical is the byproduct

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A homogeneous mixture, also known as a solution, is created when two or more components are combined to produce a combination. The solute and the solvent are the two substances that are combined.

The material that is being dissolved is known as the solute, whereas the substance that dissolves the solute is known as the solvent.

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Answer:

Full moon.

Explanation:

This diagram shows a full moon because the sunlight is shining directly onto the side of the moon facing the earth in this instance.

Answer:

It is A

Explanation:

The column of elements that is most likely to combine with sodium in the ratio 1:1 is column 17

Valency electron is the number of electron present in the outermost part of an atomic shell. The columns, or groups, on the periodic table represent the atomic elements that have the same number of valence electrons.

Valency electron determines how atom of elements combine with each other.

Therefore, sodium is in group one or column one. Sodium has a valency electron of one and can easily donate that electron to attain octet rule.

The elements in column 17 has valency electron of 7 therefore, they can easily receive a single electron to attain octet rule.

Therefore, both Sodium(column 1) and column 17 elements in the periodic table will combine to form a 1:1 ratio. For example

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Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, to improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.

(a) Direct expansion systems are those in which the refrigerant in the evaporator evaporates directly into the space to be cooled or frozen. The evaporator superheat is used to make sure that only vapor and no liquid is carried over into the suction line and compressor. Superheating is required for the following reasons :

(b) Forced draft and induced draft evaporators differ in the way air is introduced into them. In an induced draft evaporator, a fan or blower is positioned at the top of the evaporator, and air is drawn through the evaporator from the top. In a forced draft evaporator, air is propelled through the evaporator by a fan or blower that is located at the bottom of the evaporator. Forced draft evaporators are frequently used in direct expansion systems because they allow for better control of the air temperature. Because the air is directed upward through the evaporator and out of the top, an induced draft evaporator is less effective at keeping the air at a uniform temperature throughout the evaporator.

(c) (i) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant.

(ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant.

(iii) H2O is not classified as a refrigerant.

(d) The function of hydrogen gas in an absorption refrigeration system (NH3/H2O/H2) is to increase the heat of reaction between ammonia and water.

The pressure of hydrogen gas in the evaporator of an absorption refrigeration system can be determined using the formula, Pa/Pb = (Ta/Tb)^(deltaS/R),

where Pa = partial pressure of hydrogen in the evaporator, Ta = evaporating temperature, Tb = condensing temperature, Pb = partial pressure of hydrogen in the absorber, deltaS = entropy change between the absorber and evaporator, R = gas constant.

Substituting the given values, Ta = −2.0 ∘C = 271 K ; Tb = 38.0 ∘C = 311 K ; Pb = atmospheric pressure = 1 atm ;

deltaS = 4.7 kJ/kg K ; R = 8.314 kJ/mol K

we get, Pa/1 atm = (271/311)^(4.7/8.314)

Pa = 0.021 atm or 1.6 mmHg

Therefore, the partial pressure of hydrogen in the evaporator is 1.6 mmHg.

Thus, Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, o improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.

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The Ksp value of \(Ca_3(PO_4)_2\) is \(2.9 * 10^{-14 }M^2.\)

Ksp stands for "equilibrium constant for a speciation reaction." It is a measure of the stability of a solution with respect to the formation of a particular ionic species. Specifically, it is the ratio of the concentrations of the ions that are consumed (or "used up") in forming the ionic species to the concentration of the ionic species itself.

Ksp values are used to predict the relative stability of different ionic species in a solution, and they can be used to predict the concentrations of the ions in a solution as a function of time, given certain conditions. Ksp values can also be used to predict the conditions under which a particular ionic species will be formed or consumed in a reaction

The Ksp value of \(Ca_3(PO_4)_2\) can be calculated using the following equation:

\([Ca_2+][PO_3^4] = Ksp\)

From the given information, we have\([Ca_2+] = 2.9 * 10^{-7 }M, [PO_3^4] = 2.9 * 10^{-7 }M.\)

Therefore, we can substitute these values into the equation and solve for Ksp:

\([Ca__2+][PO3^4] = {(Ksp)} \\\\\\2.9 * 10^{-7} M[Ca_2+] * 2.9 * 10^{-7} M[PO_3^4] = Ksp\\\)

Ksp =  \(2.9 * 10^{-14 }M^2.\)

Therefore, the Ksp value of \(Ca_3(PO_4)_2\) is \(2.9 * 10^{-14 }M^2.\)

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The gas that could be identified as gas B is helium(He).

We know that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. If we then have two masses of gas then we can write;

R1/R2 = √M2/M1

Given that;

R1 = rate of diffusion of gas 1

R2 = rate of diffusion of gas 2

M2 = molar mass of gas 2

M1 = molar mass of gas 1

We are told that Gas 2 diffuses 3.16 times faster than gas 1. We now know that;

1/3.16 = √M2/40

(1/3.16)^2 = M2/40

1/9.99= M2/40

40 = 9.99 M2

M2 = 40/9.99

M2 = 4

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Answer:

C

Explanation:

Answer C    Full moon occurs approx 2weeks after new moon