which compound is more soluble in an acidic solution than in a neutral solution? a. pbbr2 chem 1212k spring 2022 dr. stroeva b. cucl2 c. agi d. baf2

Answer:

7.5 hours

Explanation:

half life is the a period of time the sample takes to be half the amount it started the period with

it means we can express it as

original amount / (2^n) = current amount

where n is the number of periods

in the problem if we put 100 / (2^n) = 6.25

we will find that n = 4

we divide 30 over 4 and we get that half life of each period will be equal to 7.5

To find the volume of gaseous products formed in the given reaction, we have to balance the chemical equation and then use the balanced chemical equation to solve the question.

The balanced chemical equation of the given reaction is as follows:

CO (g) + H2O (l) → CO2 (g) + H2 (g)

Now, we need to determine the mole ratios of reactants and products:

1 mole of CO reacts with 1 mole of H2O to produce 1 mole of CO2 and 1 mole of H2.

As given, we have 119 liters of CO, we need to calculate the amount of H2O required to react with 119 liters of CO:

1 mole of CO occupies 22.4 L at STP.

Therefore, 119 L of CO contains 119/22.4 = 5.31 moles of CO.

From the balanced chemical equation, we can see that 1 mole of CO reacts with 1 mole of H2O.

Therefore, 5.31 moles of CO will react with 5.31 moles of H2O.

So, the volume of H2O required to react with 119 L of CO can be calculated as follows:

5.31 moles of H2O occupy 5.31 × 18 L = 95.58 L

Now, we have the volume of H2O required to react with 119 L of CO.

We know that, at the same temperature and pressure, the volume of the gaseous product is directly proportional to the number of moles of the gaseous product.

So, the volume of gaseous products formed in the given reaction can be calculated as follows:

1 mole of CO2 occupies 22.4 L at STP.

Therefore, 5.31 moles of CO2 will occupy 5.31 × 22.4 L = 119.2 L

1 mole of H2 occupies 22.4 L at STP.

Therefore, 5.31 moles of H2 will occupy 5.31 × 22.4 L = 119.2 L

Therefore, the total volume of gaseous products formed in the given reaction is 119.2 L. Answer: 119.2

to know more about chemical balance refer here:

https://brainly.com/question/28294176#

#SPJ11

Option C. 2Ag+ + SO42- --> Ag2SO4 is the The net ionic reaction for the balanced equation.

Mass and charge must be equal in net ionic equations. By balancing by mass, one may make sure that each element is present in equal amounts on both the product and reactant sides. Making ensuring that the total charge is the same on both sides of the equation is known as balancing by charge. A chemical equation for a process known as the net ionic equation only includes the species that are really involved in the reaction. In double displacement reactions, redox reactions, and acid-base neutralization processes, the net ionic equation is frequently employed.

The complete question is :

The net ionic reaction the balanced equation shown above is

2AgNO3 (aq) +K2SO4 (aq) --> 2KNO3 (aq)+ Ag2SO4 (s)

A. Ag+ + NO3- --> AgNO3

B. H+ + OH- --> H2O

C. 2Ag+ + SO42- --> Ag2SO4

D. 2K+ +SO4(2-) -->K2SO4

E.K+ +NO3- -->KNO3

learn more about net ionic equation here:

https://brainly.com/question/13879496

#SPJ4

Answer:

Mass number

Explanation:

All atoms of the same element have the same number of protons, but some may have different numbers of neutrons, which would cause a different mass number

Answer:

The answer is mass number

Answer:

The heating of the Earth's surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds

When the gaseous Na+ and Cl− ions form gaseous NaCl ion pairs, 548 kJ/mol of energy is released. This is known that the energy released by combination of oppositely charged ion is called as Lattice energy.

Lattice energy is defined as the energy change upon formation of one mole of a crystalline ionic compound from its constituent ions which are assumed to initially be in the gaseous state. This energy is a measure of the cohesive forces that bind ionic solids. The lattice energy releases even more energy when gas is converted into solid. The ionic bonds are very strong due to high attractive forces holding the positively and negatively charged ions alternatively together. They are packed tightly and the crystal lattice structure is extremely hard to break. Thus at normal room temperature, Sodium chloride occur as solid.  

To learn more about Lattice energy please visit:

https://brainly.com/question/4792664

#SPJ4

The temperature at which the pressure will be equal to 1.75 atm, given that the tank has an initial pressure of 101325 Pa is 257.25 degrees celsius

First, we shall list out the given parameters from the question. This is shown below:

The final temperature can be obtain as follow:

P₁ / T₁ = P₂ / T₂

1 / 303 = 1.75 / T₂

Cross multiply

1 × T₂ = 303 × 1.75

T₂ = 530.25 K

Subtract 273 to obtain answer in degree celsius

T₂ = 530.25 – 273 K

T₂ = 257.25 degrees celsius

Thus, the temperature required is 257.25 degrees celsius

Learn more about temperature:

https://brainly.com/question/13628594

#SPJ1

The protein that is sensitive to Ca₂ and helps initiate muscle contraction is called troponin.

Troponins are a group of proteins that play a crucial role in muscle contraction, particularly in skeletal and cardiac muscles. They are composed of three subunits: troponin C (TnC), troponin I (TnI), and troponin T (TnT).

Troponin C binds to calcium ions (Ca²⁺) and undergoes a conformational change when Ca²⁺ levels increase. This change allows troponin I to release its inhibition on the actin-myosin interaction, allowing muscle contraction to occur. Troponin T anchors the troponin complex to the tropomyosin strands, which are filamentous proteins that regulate access to the myosin-binding sites on actin.

The interaction between troponin and calcium is a crucial step in the excitation-contraction coupling of muscles. When a nerve impulse stimulates muscle contraction, calcium ions are released from the sarcoplasmic reticulum into the muscle cell. The increased calcium concentration binds to troponin C, leading to the removal of tropomyosin from the myosin-binding sites on actin, enabling the myosin heads to attach and generate force, resulting in muscle contraction.

Troponins serve as regulatory proteins, allowing precise control of muscle contraction and relaxation. By responding to changes in calcium levels, they enable the initiation and regulation of muscle contraction in response to neural signals.

learn more about muscle contraction

https://brainly.com/question/25778330

#SPJ11

Osmolarity of solution that contains 200 mM NaCl and 100 mM Urea: The osmolarity is defined as the total solute concentration per liter of the solution.

To find the osmolarity of a solution that contains 200mM NaCl and 100mM Urea, we have to calculate the total solute concentration first.

The molecular mass of NaCl and Urea are 58.5 g/mol and 60 g/mol respectively.

So the total mass of NaCl and Urea is

(200mM * 58.5 g/mol) + (100mM * 60 g/mol) = 11.7 g/L + 6 g/L

= 17.7 g/L

Now we have to convert grams into moles to calculate the total solute concentration.

The total moles of NaCl and Urea are

(11.7 g/L)/(58.5 g/mol) + (6 g/L)/(60 g/mol) = 0.2 M + 0.1 M

= 0.3 M

Osmolarity = 0.3 Osm/L

Human cell placed in this solution: If we place a human cell in this solution, it will either shrink or swell depending on the tonicity of the solution.

Tonicity is a measure of the effective osmotic pressure gradient between two solutions separated by a semipermeable membrane.

If the concentration of solutes is greater outside the cell, the solution is hypertonic and the cell will lose water. In this case, the cell will shrink.

If the concentration of solutes is greater inside the cell, the solution is hypotonic and the cell will gain water.

In this case, the cell will swell. Final osmolarity of cell solution:

The osmolarity of a cell solution depends on the solutes and water present in it.

If we assume that the cell is isotonic to the solution outside, then the osmolarity of the cell solution will be the same as the solution outside, i.e. 0.3 Osm/L.

Direction of water flow: If the cell is placed in a hypertonic solution, water will flow out of the cell to the outside solution.

If the cell is placed in a hypotonic solution, water will flow into the cell from the outside solution.

If the cell is placed in an isotonic solution, there will be no net flow of water.

To know more about human cell, visit:

https://brainly.com/question/13550579

#SPJ11

By raising the pressure to 1.89 atm and keeping the temperature constant, 2.86 L volume of gas was consumed.

The initial pressure is 758 torr, and the question specifies a temperature of 21. The initial volume is 5.42 L. 1.89 atm has been given as the final pressure.

Atm units have been used to convert the original pressure.

1 atm Equals 760 torr so,

0.997 atm = 758 torr

In line with Boyle's law: \(P1*V1=P2*V2\)

Where, P1 and V1 stand for, respectively, the starting pressure and volume. The final pressure and volume are P2 and V2, respectively.

so,

0.997 atm *  5.42 L = 1.89 atm  * Final volume

Final volume: 2.86 L

Learn more about Boyle's Law:

brainly.com/question/1437490

#SPJ4

Answer:

200 torr

Explanation:

because it have 250ml when we subtract the 50 we get answer

This problem is describing a mixture composed by diethyl ether and actic acid, in which it is desired to extract the latter somehow.

In this case, it turns out relevant to recall the concept of polarity, hydrogen bonds, and, in general, intermolecular forces. Acetic acid is a highly polar compound, able to have both dipole and hydrogen-bonding interactions, which are by far stronger than nonpolar-based London dispersion forces.

In such a way, since diethyl ether and actic acid are able to interact via dipole-dipole interactions, they latter is able to be dissolved in the former; however, when it is desired to extract the acid, it would be necessary to add a substance able to form H-bonds with acetic acid, which are stronger than the dipole interactions.

Therefore, the best solvent for this extraction will be water due to its higher polarity and superior capacity to form H-bonds.

Learn more:

The reaction that take place when active metals react with acids are:

Active metals are those metals which are very reactive and are found high above hydrogen in the activity series of metals.

The reactivity of metals is determined by the ability of the meta to give up electrons to form positive ions called cations.

Therefore, active metals are those metals that readily give up their electrons to form cations.

The active metals are found in the group 1A and 2A and 3A of the periodic table.

The active metals include; sodium, potassium, calcium, aluminum, magnesium, zinc etc.

The active metals react with dilute acids to displace hydrogen, resulting in the evolution of hydrogen gas.

Considering the given equations, the reactions of the active metals are:

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)

Zn (s) + 2 HCl (aq) → ZnCl₂ (aq) + H₂ (g)

Learn  more about active metals at: https://brainly.com/question/11889607

#SPJ1

Atoms in increasing order of Z\(_eff\) for valence electron by simple or approximate method are Si<P<S<Cl.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ1

Your question is incomplete, but most probably your full question was,identify the list in which the atoms are ordered by increasing Zeff for a valence electron calculated by the simple or approximate method? A) P<S<Si<Cl B) Si<P<S<Cl C) Ck<S<P<Si D) S<Cl<P<Si E) Si<P<Ck<s

Answer:

Because it is the hottest zone

Answer:

the non luminous flames are very hot. little light is produced by non luminous flames.

Answer:

B. Type of music.

Explanation:

"how the type of music played in a room can affect plant growth."

The independent variable is the variable that is changed for the purpose of the experiment. The type of music is the independent variable here.

In terms of distance between particles:

In a solid, particles are tightly packed and have a fixed position and liquid, particles are close to each other but have more freedom of movement but gas, particles are far apart and have complete freedom of movement.

in terms of Kinetic energy solid  particles have the lowest kinetic energy liquid, particles have higher kinetic energy compared to a solid and  gas particles have the highest kinetic energy.

In terms of  Potential energy solid particles have the lowest potential energy liquid particles have a slightly higher potential energy and gas, particles have the highest potential energy.

a) Vapor pressure is the pressure exerted by the vapor molecules of a substance when it is in equilibrium with its liquid or solid phase at a given temperature.

b) Vaporization point is the temperature at which a substance changes from a liquid to a gas phase through the process of vaporization.

c) Normal vaporization point is described as  the temperature at which a substance changes from a liquid to a gas phase at a standard pressure of 1 atmosphere.  

When water or any liquid evaporates from the skin, it absorbs heat energy from the surrounding area, including the skin itself which the absorption of heat energy is due to the higher kinetic energy of the liquid particles near the surface.

Learn more about Vapor pressure at:

https://brainly.com/question/2693029

#SPJ1

The following reaction involves (1) C–O  bond cleavage of the alcohol molecule.

When extreme circumstances and an abundance of hydrogen halides are present, the C-O bond in ethers can be broken. Two molecules of alkyl halide are produced as a byproduct of the process involving dialkyl ether. Because of the increased strength of the aryl-oxygen bond, the alkyl-oxygen bond in alkyl aryl ethers is the point of cleavage. The reaction results in the production of phenol and alkyl halide.

As we can see in the given mechanism, after the first step, an intermediate C-O bond is broken by the Br⁻ ion in alcohol, which is an incoming ion via the SN2 mechanism. At this stage, the O-H bond is not broken; only the C-O bond is broken.

The complete question is attached.

You can also learn about SN2 mechanism from the following question:

https://brainly.com/question/7213902

#SPJ4

Answer:

The theoretical yield of oxygen (O2) can be calculated using the balanced chemical equation:

2 H2O(l) → 2 H2(g) + O2(g)

From part (c), we calculated that 90.0 g of water (H2O) can produce 31.98 g of oxygen (O2). Therefore, the theoretical yield of oxygen from 43,200 g of water is:

theoretical yield = (31.98 g O2 / 90.0 g H2O) x 43,200 g H2O

theoretical yield = 15,379.2 g O2

The percent yield of oxygen can be calculated using the formula:

percent yield = (actual yield / theoretical yield) x 100%

Substituting the given values, we get:

percent yield = (43,200 g / 15,379.2 g) x 100%

percent yield ≈ 280.9%

This result seems unusually high, and suggests an error in the calculations or experimental data. A percent yield greater than 100% indicates that the actual yield is greater than the theoretical yield, which is usually not possible due to limitations in the reaction conditions or experimental procedures.

Answer:

B. it is a community of plants,animals and there physical surrounding.

Answer:

Pupa Stage

Explanation:

Silk worm consists of four stages- the adult, the egg, the larva (caterpillar) and the pupa stage.

When alkaline hydrolysis was first invented, people were hired for various roles related to the process and implementation of this technology. Some of the jobs that emerged include Chemical engineers, Technicians and operators, Waste management specialists, Scientists and researchers.

Chemical engineers: These professionals played a crucial role in developing and optimizing the alkaline hydrolysis process. They were responsible for designing the equipment, developing the necessary chemical reactions, and ensuring the efficient operation of the system.

Technicians and operators: Skilled technicians and operators were hired to operate and maintain the alkaline hydrolysis equipment. They were trained to monitor the process parameters, handle the chemicals involved, and ensure the proper functioning of the system.

Waste management specialists: With the introduction of alkaline hydrolysis as a method for disposal of organic waste, specialized professionals in waste management were employed to oversee the proper handling and treatment of the waste materials. They were responsible for implementing safety protocols, managing waste streams, and complying with environmental regulations.

Scientists and researchers: Alkaline hydrolysis required scientific expertise for continuous improvement and innovation. Scientists and researchers were hired to study the process, analyze the results, and explore potential applications in various fields such as biofuel production and chemical synthesis.

Overall, the introduction of alkaline hydrolysis created employment opportunities for professionals in engineering, chemistry, waste management, and research, among others, as this technology gained recognition and adoption.

To know more about hydrolysis , click here, https://brainly.com/question/31132313

#SPJ11

"Hypotonic solution," refers to a solution with the highest water concentration due to its lower solute concentration compared to the other options, leading to water influx into cells.

A hypotonic solution would be most likely to have the highest water concentration. In a hypotonic solution, the solute concentration is lower than that inside the cell or compared to another solution. As a result, water tends to move into the cell or the solution to equalize the concentration.

When a cell is placed in a hypotonic solution, water molecules will move into the cell through the process of osmosis. This influx of water increases the water concentration inside the cell, leading to cell swelling or even bursting in extreme cases.

Compared to hypertonic and isotonic solutions, a hypotonic solution has a lower solute concentration, allowing for a higher concentration of water molecules. This results in a higher water concentration in the solution. It's important to note that the concept of tonicity is related to the relative solute concentrations between two solutions and their effect on cell osmosis. In this case, a hypotonic solution is characterized by a higher water concentration compared to the other options.

learn more about Hypotonic solution here:

https://brainly.com/question/28020628

#SPJ11

Answer:

the food chain you mean

Explanation:

pollution than mosquitoes then alligators

298 g of BaSO4 is the mass of Barium Sulfate which is expressed using three significant figures.

To learn more about significant figures refer to:

https://brainly.com/question/24491627

#SPJ1

Following the formula they gave you need to do

i × kb × mass

1 × 2.65 × 2

= 5.3

Change in temperature should be 5.3°C

Answer:

volume of O2 = 3000cm³

Explanation:

no. of moles= mass of oxygen (g)/molar mass of oxygen(g/mol)

                    = 4/32

                    =0.125

volume of oxygen= no. of moles × 24000 cm³ (or 24dm³)

                             = 0.125 × 24000 cm³  

                             =3000cm³  (or 3dm³)

The correct answer is:Only statements 1 and 2 are correct.

1) The bond is planar.

2) There is free rotation about the carbonyl carbon and nitrogen bond.

The bond is planar: True, Peptide bond is a planar bond because it is composed of a double bond between the carbonyl carbon and nitrogen, and the atoms on either side of the double bond are sp2 hybridized. There is free rotation about the carbonyl carbon and nitrogen bond: True, the peptide bond between amino acids in a protein is a single bond, which allows for rotation about the bond, this is one reason proteins can adopt many different conformations.There is substantial double-bond character to this bond: False, the peptide bond is actually a single bond, although it has some double-bond character, it is not a double bond.There is a net negative charge on nitrogen and net positive charge on oxygen: False, both nitrogen and oxygen atoms in a peptide bond are neutral, as there is no charge separation in the bond.

To learn more about typical peptide here:

https://brainly.com/question/15578006

#SPJ4