calculate the percent ionization of 0.00730 m carbonic acid in a solution containing 0.0560 m sodium hydrogen carbonate.

According to law of conservation of energy when a match is striked mechanical energy is transformed into thermal energy that is heat.

Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.

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The selection rules of quantum mechanics allow finding the result for the order of the atomic levels are:

number higher electrons   -- lower number electrons

                Principal  > Orbital  > Magnetic          

                           n   >   l   > \(m_l\)

The solution of the Schrodinger equation of quantum mechanics results in the energy of the in electrons in an atom that has spherical symmetry and has three constants that are related.

The constants are called quantum numbers and are: The main, the secondary or orbital and magnetic.

The principal quantum number (n) can have values ​​from 0 to infinity

The orbital quantum number (l) can have a value from 0 to n -1, it is customary to write this number with letters

     number    symbol

          0             s

          1              p

          2             d

          3             f

The magnetic quantum number (\(m_l\) ) can have values ​​from -l to l

Apart from this number there is a fourth quantum number called spin magnetic quantum number (\(m_s\)) and it can have only two values ​​½ and -½,

These numbers that are allowed in quantum mechanics are called select rules. We can see that in each main number (n) there can be several orbital numbers (l) and within each orbital number there can be several magnetic numbers and within each of them there is

The order of the levels from highest to lowest number of electrons are:

    Spin.             Lowest

    Mmagnetic

    Orbital

    Principal     Highest

In conclusion using the selection rules of quantum mechanics we can find the result for the order of the atomic levels are:

Number higher electrons   -- Lower number electrons

       Principal  > Orbital  > Magnetic

            n  >  l  > \(m_l\)

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The chemical equations given would be balanced below

The balanced equation of the various given chemical equations can be determined only when the number of atoms on the product part is the same with the number of atoms on the reactant side.

For 1.)

\(N_{2} + 3H_{2} ----- > 2NH_{3}\)

For 2.)

\(2KCl_{3} ----- > 2KCl + 3O_{2}\)

For 3.)

\(2NaCl + F_{2} ----- > 2NaF + Cl_{2}\)

For 4.)

\(2H_{2} + O_{2} ----- > 2H_{2} O\)

For 5.)

\(Pb(OH)_{2} + 2HCl ----- > 2H_{2} O +PbCl_{2}\)

For 6.)

\(2AlBr_{3} + 3K_{2}SO{4} ---- > 6KBr + Al_{2}(SO_{4})_{3}\)

For 7.)

\(CH_{4} + O_{2} ----- > CO_{2} + 2H_{2} O\)

For 8.)

\(C_{3} H_{8} + 3O_{2} ----- > 3CO_{2} + 4H_{2} O\)

For 9.)

\(C_{8} H_{18} + 8O_{2} ----- > 8CO_{2} + 9H_{2} O\)

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There are several ways in which waste in Kampala can be managed, and this will be a long answer as there are various factors that need to be considered.  This waste is largely made up of organic waste, plastic waste, paper waste, and electronic waste. Here are some of the ways in which waste in Kampala can be managed:

1. Segregation: One of the most important steps in managing waste is to segregate it at the source.
2. Recycling: Recycling is an important aspect of waste management as it helps to reduce the amount of waste that ends up in landfills.
3. Landfills: Landfills are where non-recyclable waste is disposed of. In Kampala, there are several landfills, but most of them are poorly managed, leading to environmental pollution and health hazards.

Waste management is a complex issue that requires a multifaceted approach. Kampala can manage its waste by segregating waste at the source, recycling, composting, investing in properly managed landfills, adopting waste-to-energy technologies, and educating the public on proper waste management practices.

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Answer:

about 0.2 mL

Explanation:

To find the volume, you take the mass and divide it by the density

Answer:

6NO2+3H2O-------->3HNO2+3HNO3

The interactions that hold hair strands together and are pH-sensitive are (iii) a disulfide linkage. The correct answer is "iii only".

Disulfide linkages are formed between sulfur atoms in the amino acid cysteine, which is present in the protein structure of hair. These linkages are responsible for the structural stability and strength of hair. When the pH of the hair is altered, such as through the use of chemical treatments or hair products, the disulfide linkages can be disrupted. This can lead to changes in the shape and texture of the hair. Therefore, the presence and integrity of disulfide linkages in hair are pH-sensitive. On the other hand, salt bridges and hydrogen bonds, mentioned in options (i) and (ii) respectively, are not directly pH-sensitive. Salt bridges are ionic interactions that can be influenced by pH indirectly through changes in ionization states of charged amino acids. Hydrogen bonds, while important for the structure of hair, are not directly affected by pH changes.

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Amount of sodium-24 will remain in an 18g sample is 1.125 grams.

60/15=4 half-lives,

2^-4 X18=1.125 grams of Sodium-24 left after 60 hours.

Half-life is the time required for a amount to reduce to 1/2 of its preliminary value. The time period is normally utilized in nuclear physics to describe how quickly unstable atoms go through radioactive decay or how long strong atoms live to tell the tale. The time period is likewise used extra usually to signify any form of exponential decay.

The 1/2-existence of an isotope is used to describe the price at which the isotope will decay and provide off radiation. The usage of the 1/2-life, it's miles feasible to are expecting the quantity of radioactive material to be able to continue to be after a given amount of time.

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Answer:

The gas fumes are toxic

Explanation:

The extremely high concentrations of carbon monoxide produced by an engine can raise CO concentrations in a closed building so quickly that a person may collapse before they even realize there is a problem. Carbon monoxide reduces the amount of oxygen to the brain, causing CO intoxication, and lack of reasoning.

Below is an example of the open-chain structure (as a Fischer projection) of 2-deoxy-D-glucose.

The Fischer projection should be aligned vertically, with the carbon atoms at the top and bottom and the oxygen atoms on the left and right. The chiral carbon atoms should be labeled and any hydrogens attached to them should be explicitly shown. Note that bonds to other hydrogens should not be shown.

O O | /| | / | | H | H | H | | H | | H | | H | H | H | | H | |H | C--C--C--C--C

The diagram provided is a Fischer projection of 2-deoxy-D-glucose. The vertical alignment of the carbon atoms at the top and bottom, and the oxygen atoms on the left and right is correct. The chiral carbon atoms should be labeled and any hydrogens attached to them should be explicitly shown. Note that bonds to other hydrogens should not be shown.

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The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.

When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.

The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.


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The major E2 reaction product formed when (1R,2S,4S)-2-chloro-4-methyl-1-(propan-2-yl)cyclohexane reacts with hydroxide ion in DMSO is (1S,2R,4S)-2-methyl-1-(propan-2-yl)cyclohexene.

In an E2 (elimination) reaction, a hydrogen atom and a leaving group are removed from adjacent carbon atoms, resulting in the formation of a double bond. In this case, the leaving group is the chloride ion (Cl-) and the hydrogen atom is removed from the carbon adjacent to the chlorine atom.

The given starting compound, (1R,2S,4S)-2-chloro-4-methyl-1-(propan-2-yl)cyclohexane, has a chiral center at carbon 2, which is marked as (S). When the hydroxide ion (OH-) attacks the carbon adjacent to the chlorine atom, the chlorine leaves and a hydrogen from the adjacent carbon is also removed. The resulting product is (1S,2R,4S)-2-methyl-1-(propan-2-yl)cyclohexene.

It's important to note that the stereochemistry of the starting compound and the resulting product is represented by the (R) and (S) designations, indicating the arrangement of the substituents around the chiral carbon atoms.

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Answer:

21.25

Explanation:

A. none of the above

The answer would be 180 m/s

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The question requires us to choose the best option to explain why bubbles rise faster from a warm can of soda than a cold can, based on the solubility of gases in liquids.

Adding heat to a solution composed of a liquid and a gas (i.e., increasing its temperature) provides thermal energy to the gas that makes it possible to overcome the forces that maintain molecules of solvent (liquid) and solute (gas) together. In this way, the molecules of solvent and solute tend to separate, therefore decreasing the solubility of the gas. Based on this, we can say that the solubility of gases in liquids increase with increasing temperature.

Therefore, the best option to answer the question is the first one, "gases become less soluble in liquids at higher temperatures".

Answer:

the oil spreads to cover the water

Answer:

I think it is ; The oil floats to the surface of the water

Explanation:

I don't know about the other one.

To determine the partial pressure of H2 gas (a), we need to subtract the vapor pressure of water at 16 °C (14 mmHg) from the total pressure of the gas collected (758 mmHg).

Partial pressure of H2 gas (a) = Total pressure - Vapor pressure of water

= 758 mmHg - 14 mmHg

= 744 mmHg

Therefore, the partial pressure of H2 gas is 744 mmHg.

To calculate the number of moles of H2 gas produced (b), we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin:

T = 16 °C + 273.15 = 289.15 K

Now we can rearrange the ideal gas law equation to solve for the number of moles:

n = PV / RT

n = (744 mmHg * 425 mL) / (0.0821 L·atm/mol·K * 289.15 K)

= 0.128 moles of H2 gas

Therefore, approximately 0.128 moles of H2 gas were produced in the reaction.

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Answer:

Explanation:

This is answer to your other question:

Mosquito has the smallest number of chromosomes of the organisms shown. So it will be the simplest for studies.  Also because mosquito reproduces within days, you can study effects of any chromosome change on its offspring.

1) Determine the mass of zirconium

Convert moles of zircon into moles of zirconium

Convert moles of zirconium into mass of zirconium (g)

2) Determine the mass of Silicon

Convert moles of zircon into moles of silicon

Convert moles of silicon into mass of silicon (g)

3) Determine the mass of Oxygen

Convert moles of zircon into moles of oxygen

Convert moles of oxygen into mass of oxygen

The mass of zirconium is 30.87 g

The mass of silicon is 9.504 g

The mass of oxygen is 21.66 g

Approximately x% of the acid is dissociated in a 0.50 M solution of HA at 25°C.

The percent dissociation of an acid can be determined using the acid dissociation constant (Ka) and the initial concentration of the acid (HA). The mathematical expression for percent dissociation is:

Percent Dissociation = (Dissociated HA concentration / Initial HA concentration) * 100

In this case, we are given that the acid dissociation constant (Ka) for acid HA is known at 25°C, and we have a 0.50 M solution of HA. However, the value of Ka and specific acid are not provided, so we cannot calculate the exact percent dissociation.

To calculate the percent dissociation, you would need the value of Ka for the specific acid, which indicates the extent of dissociation at equilibrium. Based on this value and the initial concentration of HA, you can calculate the dissociated HA concentration and then use the mathematical expression mentioned above to determine the percent dissociation.

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Firstly you need to know the composition of salt.

Salt is made of Sodium and Chloride and is ionically bonded.

Ionic bonding is a type of chemical bonding that involves electrostatic attractions between oppositely charged ions ( e.g Na+ and Cl-).

Therefore salt is bonded by ionic bond.

Answer:

Yes

The simple answer is yes. Almost everything has atoms and molecules consisting in it. The answer is yes. Hope it helps!

When 1-propanol is used as the solvent instead of 2-methyl-2-butanol, the ratio of the products and the precise yields may vary.

The reaction of KOH with 1-propanol typically results in the formation of two alkenes: propene and 2-propen-1-ol. The ratio of these two products will depend on the reaction conditions, such as temperature, concentration of KOH, and reaction time.

The specific yields of the two alkenes will depend on the efficiency of the reaction, as well as the selectivity of the reaction towards each product. In general, propene is expected to be the major product due to its thermodynamic stability. However, if the reaction conditions favor the formation of 2-propen-1-ol, then the specific yield of this product may be higher.

If the solvent is substituted for 2-methyl-2-butanol, the reaction conditions may be affected due to the differences in physical and chemical properties of the solvent. For example, 2-methyl-2-butanol has a higher boiling point and lower polarity than 1-propanol, which may result in different reaction rates and selectivities. The reaction may also be affected by the steric hindrance of the solvent, which can affect the accessibility of the KOH to the reactant.

Therefore, the ratio of products and specific yields may be different when using 2-methyl-2-butanol as the solvent compared to 1-propanol.

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The correct isomer of C4H10O based on its 13C NMR spectrum is option B. In the given 13C NMR spectrum, we have four distinct peaks at δ 18.9, δ 30.8, and δ 69.4.

From the spectrum, we can identify the number of carbons corresponding to each peak:  The peak at δ 18.9 represents two carbon atoms, which indicates the presence of a CH3 group.

The peak at δ 30.8 represents one carbon atom, indicating the presence of a CH group, the peak at δ 69.4 represents one carbon atom, indicating the presence of a CH2 group. Based on these observations, the only isomer that matches this spectrum is option B.

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Avogadro’s wide variety, the wide variety of gadgets in a single mole of any substance (described as its molecular weight in grams), is the same as 6.02214076 × 1023. The gadgets can be electrons, atoms, ions, or molecules, relying on the character of the substance and the individual of the reaction (if any).

Avogadro's Law

Avogadro's law states that an "equal volume of all gases at the same temperature and pressure contain the same number of molecules"

For example:-

18g of water = 1 mole = 6.022* 10²³ molecules of water

1.008g of hydrogen = 1 mole = 6.022 *10²³ atoms of hydrogen

96.06g of SO₄²- ion = 6.022*10²³ ions of SO₄²-.

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Answer:

Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

Explanation:

The value of Equilibrium constant  Kc for the reaction 1/2 H2(g)+ 1/2 Br2(g)->Hbr(g) is 14.20.

The value of Kc for the reaction 1/2 H2(g)+ 1/2 Br2(g)->Hbr(g) can be found by using the relationship between the equilibrium constant of the forward reaction and the reverse reaction. The equilibrium constant for the reverse reaction is the reciprocal of the equilibrium constant for the forward reaction.

In this case, the forward reaction is 2HBr(G)->H2(g)+Br2(g) and the reverse reaction is 1/2 H2(g)+ 1/2 Br2(g)->Hbr(g). Therefore, the equilibrium constant for the reverse reaction is the reciprocal of the equilibrium constant for the forward reaction:

Kc (reverse) = 1/Kc (forward)

Kc = = 14.20

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Answer:

2.335 ×10∧24 particles

Explanation:

Answer:

5

Explanation:

Palmitic acid has 16 carbon atoms and is a saturated fatty acid. The synthesis of palmitic acid occurs via the fatty acid synthesis pathway, also known as the "de novo" fatty acid synthesis pathway.

To synthesize palmitic acid, 8 cycles of the fatty acid synthesis pathway are needed. Each cycle adds two carbon units to the growing fatty acid chain, The synthesis of palmitic acid occurs via the fatty acid synthesis pathway, also known as the "de novo" fatty acid synthesis pathway. starting with acetyl-CoA (a 2-carbon unit) and continuing with malonyl-CoA (a 3-carbon unit). After 8 cycles, a 16-carbon saturated fatty acid, palmitic acid (C16H32O2), is produced, along with 7 molecules of CO2 and 14 molecules of NADPH.

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