What is the bond angle of carbonothioyl dibromide
Also what is the molecular shape

Polysaccharides are a type of carbohydrate polymer composed of repeating units of monosaccharides. They are not one of the three main types of macromolecular polymers in the cell.

The reason for false statement are as following :-

a. The statement is false because polymers are assembled from monomers within the cell, not in an extracellular compartment. Cells have the ability to synthesize a variety of polymers, including nucleic acids, proteins, and carbohydrates, to perform specific functions within the cell. The assembly of polymers from monomers is an energy-intensive process that requires enzymes and specific conditions, such as the appropriate temperature and pH level. Therefore, the synthesis of polymers typically occurs within the cell.

A correct description would be: Polymers are assembled from monomers within the cell, and the synthesis of polymers is an energy-intensive process that requires enzymes and specific conditions.

b. The statement is false because polysaccharides are not one of the three main macromolecular polymers in the cell. The three main types of macromolecular polymers in the cell are nucleic acids, proteins, and carbohydrates. Polysaccharides are a type of carbohydrate polymer, but they are not one of the three main types of macromolecular polymers. Polysaccharides are composed of repeating units of monosaccharides, which gives rise to a limited number of polysaccharide sequences.

A correct description would be: Polysaccharides are a type of carbohydrate polymer composed of repeating units of monosaccharides. They are not one of the three main types of macromolecular polymers in the cell.

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Answer:

2.16 M

Explanation:

The molarity of the solution is 2.16 M. To calculate the molarity, you need to first determine the number of moles: 29.4 grams of NaCl is equal to 0.737 moles. Then, divide the number of moles, 0.737, by the volume of the solution, which is 250 mL. Multiplying the result by 1000 gives the molarity, which is 2.16 M.

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The concentration of each of the individual ions of the strong electrolyte in a 0.550 M (NH4)2S solution is 0.1100M and 0.550M. (NH4)2 S is a strong electrolyte as it completely dissociates into NH4+ and S2- ions.

A strong electrolyte is known as a solution or solute that completely or almost completely, ionizes or dissociates in a solution. These electrolytes are good conductors of electric current in the solution. Strong electrolyte is defined as a chemical in aqueous solution which is a good conductor of electricity. The term is also known as molar concentration. Molar concentration of a solution is defined as the number of moles of solute dissolved in one liter of solution. In order to calculate the molarity of a solution we have to divide the moles of solute by the volume of the solution expressed in liters.

So, (NH4)2S as strong electrolyte with complete dissociation, have the amount of molarity added times the number of moles of each compound:

NH4+ = 2 x (.550M) = .1100M

S2- = .550M

So the concentrations are determined are .1100M and .550M.

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When we have the following balanced reaction, CH₃COOH + NaOH → CH₃COONa + H₂O, one mole of water is formed for each mole of acetic acid used.

Generally, we can define, Stoichiometry as the calculation of products and reactants in a chemical reaction. It is basically related with numbers. Mole ratio, is common type of stoichiometric relation, which relates the amounts in moles of any two substances in chemical reaction.

We have a balanced chemical reaction, CH₃COOH + NaOH → CH₃COONa + H₂O, where, acetic acid reacts with sodium hydroxide and water molecules formed with Sodium acetate. Now, we have to determine the moles of water are formed for each mole of acetic acid used.

Using the stoichiometry concept, one mole of acetic acid reacts with one mole of sodium hydroxide forming one mole of water and one mole of Sodium acetate. Therefore, one mole of water is formed for each mole of acetic acid used.

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Complete question:

if you have the following reaction,

CH₃COOH + NaOH ==> CH₃COONa + H₂O, how many moles of water are made for each mole of acetic acid used?

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Answer:

,

Explanation:

Refer to pics.............

26.4g is the percentage yield when 20g of aluminium are produced from 50g of aluminium oxide.

The % ratio of the theoretical yield to the actual yield is known as the percent yield. It is calculated as the theoretical yield increased by 100% divided by the experimental yield. The percentage return is 100% if the theoretical and actual yields are equal. Because the real yield is frequently lower than the theoretical value, percent yield is typically lower than 100%.

This may be due to incomplete or conflicting reactions or sample loss during recovery. If the percent yield is more than 100%, more sample than expected was retrieved from the reaction. This may have happened when other reactions took place and the product was also created.

2Al[tex]_2[/tex]O[tex]_3[/tex] → 4 Al + 3O[tex]_2[/tex]

2 mole of Al[tex]_2[/tex]O[tex]_3[/tex] =4 mol of Al

2(2×27+48) =4×27

204g of Al[tex]_2[/tex]O[tex]_3[/tex]  = 108g of Al

50g of Al[tex]_2[/tex]O[tex]_3[/tex] =x

26.4g =x

Therefore, 26.4g is the percentage yield when 20g of aluminium are produced from 50g of aluminium oxide.

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Answer:

true

The water cycle affects the weather and climate of a particular region in multiple ways

The root mean square speed of F2(g) molecules under the same conditions is approximately 431.3 m/s.

The root mean square (rms) speed of a gas molecule is related to its average kinetic energy (KE) by the following equation:

rms speed = √(3RT/M)

Where

To solve for the rms speed of F2(g) molecules, we need to know the temperature and molar mass of F2(g). Let's assume that the temperature is the same as the conditions in which He(g) has an average kinetic energy of 7450 J/mol. The molar mass of F2 is 2 x the molar mass of one fluorine atom, which is approximately 19 amu.

Substituting these values into the equation, we get:

Now we can solve for the rms speed by plugging in the given value of average kinetic energy for He(g) and solving for T:

7450 J/mol = (1/2) x (3/2) x R x T

T = 7450 J/mol / (1.5 x 8.314 J/mol·K)

T = 597 K

Substituting this value of T into the equation for rms speed, we get:

rms speed = √(0.6564 J/K x mol x 597 K / 1 mol)

rms speed = 431.3 m/s

Therefore, the root mean square speed of F2(g) molecules under the same conditions is approximately 431.3 m/s.

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The standard change in Gibbs energy at 25 degree Celsius is  490.6 °C. for given equilibrium partial pressure  .

The Gibbs energy is the thermodynamic potential that is minimized when a system reaches chemical equilibrium at constant pressure and temperature when not driven by an applied electrolytic voltage. Its derivative with respect to the reaction coordinate of the system then vanishes at the equilibrium point.

Using the formula

ΔG° =  - R × T ln K

WHERE R=  8.3144598 J⋅mol⁻¹⋅K⁻¹.

T = 298 K

K = 0.82

SOLVING ,

The standard change in Gibbs energy at 25 degree Celsius is  490.6 °C.

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Answer:

The balanced chemical equation for the reaction is:

C2H6 + 3O2 → 2CO2 + 3H2O

To calculate the theoretical yield of CO2, we need to use the given amount of ethane and oxygen gas to determine which reactant is limiting, and then use stoichiometry to calculate the amount of CO2 that should be produced.

First, we need to calculate the number of moles of ethane and oxygen gas used in the reaction:

moles of ethane = 26.76 g / 30.07 g/mol = 0.8908 mol

moles of oxygen gas = 169.4 g / 32.00 g/mol = 5.304 mol

Next, we need to determine which reactant is limiting by comparing the number of moles of each reactant to their stoichiometric coefficients in the balanced equation. The stoichiometric ratio of ethane to oxygen gas is 1:3, so every one mole of ethane requires three moles of oxygen gas. Therefore, the limiting reactant is ethane, because there are only 0.8908 moles of it, whereas there are 5.304 moles of oxygen gas.

Using the stoichiometry of the balanced equation, we can calculate the theoretical yield of CO2:

moles of CO2 = moles of ethane × (2 moles of CO2 / 1 mole of C2H6) = 0.8908 mol × 2 = 1.7816 mol

mass of CO2 = moles of CO2 × molar mass of CO2 = 1.7816 mol × 44.01 g/mol = 78.5 g

Now, we can calculate the percent yield of CO2:

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

actual yield = 69.7 g

percent yield = (69.7 g / 78.5 g) × 100% = 88.7%

Therefore, the percent yield of CO2 is 88.7%.

The element potassium (K) has an atomic number of 19 and its electron configuration does not begin with the argon core, instead beginning with 4s1. the correct answer is potassium (K).

The electron configuration of an element specifies the number of electrons in each of its atomic orbitals. The elements on the periodic table are arranged in order of increasing atomic number, which corresponds to the number of protons and electrons in the nucleus of an atom. Elements with an atomic number higher than 18, such as scandium (Sc), manganese (Mn), and chlorine (Cl), have electron configurations that begin with the noble gas argon (Ar) core of [Ar]3d10 4s2. However, the element potassium (K) has an atomic number of 19 and its electron configuration does not begin with the argon core, instead beginning with 4s1.
Therefore, the correct answer is potassium (K).

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The term Fractured Toughness is defined as the plane strain fracture toughness. This is expressed as KIC.

KIC stands for Fractured Toughness which is defined as a measure of the resistance of a material to crack extension under predominantly linear-elastic conditions that is low toughness conditions when there is little to no plastic deformation occurring at the crack tip. KIC is considered as the lower limiting value of fracture toughness in the environment and at the speed and temperature of the test and can be considered as a size-independent fracture parameter for brittle materials. There is no advance assurance that a valid fractured toughness value will be determined from a particular test of the specimen.

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Heat is produced anytime current flows in a circuit, due to the collision between the flowing free electrons and the fixed atoms. When an electric current flows through a conductor, the free electrons move through the lattice of atoms.

As they move, they collide with the fixed atoms, causing the atoms to vibrate and transfer energy to neighboring atoms. This energy transfer increases the temperature of the conductor, resulting in the production of heat.

The amount of heat produced is directly proportional to the amount of current flowing through the conductor, the resistance of the conductor, and the time for which the current flows. This relationship is described by Joule's law, which states that the heat produced is equal to the product of the current, the resistance, and the time.

Mathematically, this can be expressed as H = I^2RT, where H is the heat produced, I is the current, R is the resistance, and T is the time. The collision between the flowing free electrons and the fixed atoms in a conductor leads to the production of heat, which is proportional to the current, resistance, and time for which the current flows.

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In a solution with a pH of 11, phenolphthalein will turn pink, and litmus will turn purple.

The solution with a pH of 11 is first tested with phenolphthalein and then with litmus. When a solution with a pH of 11 is tested with phenolphthalein, the color is pink. When the same solution is tested with litmus, the color is blue.

Phenolphthalein and litmus are commonly used as indicators in acid-base titration, where a pH change can be detected by a change in color. These indicators have different pH ranges where their colors change, making them useful in identifying the pH of a solution.

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Using the Clausius-Clapeyron equation, the pressure can be obtained as 3.86 atm

The Clausius-Clapeyron equation is an important thermodynamic equation that relates the vapor pressure of a liquid to its temperature and enthalpy of vaporization

The Clausius-Clapeyron equation describes how the vapor pressure of a liquid changes as a function of temperature, and how it is related to the enthalpy of vaporization of the liquid. This equation is particularly useful in understanding the behavior of substances at different temperatures and pressures, and is often used in thermodynamic calculations related to phase transitions and chemical reactions involving liquids and gases.

We know that;

ln(P2/P1) = ΔH/R (1/T2 - 1/T1)

ln(P2/1) = 35.2 * 10^3/8.314 (1/304.9 - 1/337.7)

ln(P2/1) = 35.2 * 10^3/8.314 (3.28 - 2.96) * 10^-3

P2/1 = e^1.35

P2 = 1 *  e^1.35

P2 = 3.86 atm

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The quaternary structure of hemoglobin is responsible for the increased oxygen-carrying capacity and stability of the molecule. This structure allows hemoglobin to better transport oxygen throughout the body and is essential to life.

The structural change from myoglobin to hemoglobin includes an additional quaternary structure, which is the arrangement of two or more myoglobin subunits into a single, functional entity. This structural change allows for the cooperative binding of oxygen, meaning that the hemoglobin molecule can carry more oxygen than a single myoglobin molecule can. This is due to the increased surface area of the hemoglobin molecule, which provides more oxygen-binding sites. Additionally, the quaternary structure of hemoglobin increases the stability of the molecule, meaning it can better resist changes in pH or temperature. This is important because it allows hemoglobin to function in the wide range of temperatures and environments that are found within the human body.  

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Answer:

Explanation:

The overall equilibrium equation can be obtained by combining the two given equations:

H2CO3 + OH- → HCO3- + H2O (1)

HCO3- + OH- → CO32- + H2O (2)

Adding equations (1) and (2), we get:

H2CO3 + 2OH- → CO32- + 2H2O

Dividing the second equation by the first, we get:

[CO32-][H2O]/[HCO3-] = K2

Multiplying the above equation with the first equation, we get:

[H2CO3][CO32-][H2O]^2/[HCO3-] = K1*K2

Thus, the equilibrium constant expression for the overall reaction is:

[K] = [H2CO3][CO32-][H2O]^2/[HCO3-]

where [K] = K1*K2.

Answer:

Take 1600grams divide by 2

Venconstriction B) reduces the amount of blood within the venous system, which increases the volume in the arterial and capillary systems.

Venoconstriction is the process of narrowing a vein by reducing its diameter. It could happen if the smooth muscles in the vein walls contract. This increases resistance to blood flow, which aids in the maintenance of blood pressure. Venoconstriction happens when the sympathetic nervous system activates to regulate blood flow. This response is triggered by many factors, including exercise, standing up, and emotional stress.

Venoconstriction is a normal bodily response that maintains blood flow and pressure. Blood pressure within the arterial system will rise when venous return decreases. The veins provide an essential volume reserve for the cardiovascular system. They serve as a storage tank for blood, and this is where the venous return is established.

The regulation of venous return is critical to the maintenance of cardiac output and arterial blood pressure. A decrease in venous return will result in a decrease in end-diastolic volume and, thus, a decrease in stroke volume. This is often followed by a drop in cardiac output, which causes arterial blood pressure to fall. Venous return can be affected by various factors, including venoconstriction or venodilation. Therefore option B is correct.

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Answer:

Your answer is on the attached image. I hope this helps!

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The electron configuration of Cs⁺ is [Xe].

The electron configuration of Mg²⁺ is [Ne].

The electron configuration of Te²⁻ is [Kr]5s²4d¹⁰5p⁶.

The electron configuration of Cl⁻ is [Ne]3s²3p⁶.

Cs⁺: The Cs⁺ ion has lost one electron from the neutral Cs atom, which has an electron configuration of [Xe]6s¹. Therefore, the electron configuration of Cs⁺ is [Xe].

Mg²⁺: The Mg²⁺ ion has lost two electrons from the neutral Mg atom, which has an electron configuration of [Ne]3s². Therefore, the electron configuration of Mg²⁺ is [Ne].

Te²⁻: The Te²⁻ ion has gained two electrons compared to the neutral Te atom, which has an electron configuration of [Kr]5s²4d¹⁰5p⁴. Therefore, the electron configuration of Te²⁻ is [Kr]5s²4d¹⁰5p⁶.

Cl⁻: The Cl⁻ ion has gained one electron compared to the neutral Cl atom, which has an electron configuration of [Ne]3s²3p⁵. Therefore, the electron configuration of Cl⁻ is [Ne]3s²3p⁶.

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The enthalpy change can not be measured directly because you have to take into account how much energy was put into the reaction in the first place.

Hope this helps!!! :)

Answer:

Table salt.

Explanation:

Table salt would shatter when hit with a hammer.

1. The energy level of the reactants is lower than that of the products. - Endothermic

2. The combustion of wood provides energy - Exothermic

3. A reaction releases 101 J. - Exothermic

What is an Endothermic?

An endothermic process or reaction is a chemical or physical process that absorbs heat from the surroundings. In an endothermic process, energy is required to break the bonds in the reactants and form new bonds in the products. As a result, the temperature of the surroundings decreases, and the process feels cold to the touch. Examples of endothermic processes include melting ice, cooking an egg, and evaporating water.

What is an Exothermic?

An exothermic process or reaction is a chemical or physical process that releases heat into the surroundings. In an exothermic process, energy is released as the bonds in the reactants are broken and new bonds are formed in the products. As a result, the temperature of the surroundings increases, and the process feels warm to the touch. Examples of exothermic processes include burning a candle, combustion reactions, and the reaction between baking soda and vinegar.

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These compounds X and Y  do not undergo a Diels-Alder reaction with maleic anhydride.

The Diels-Alder reaction is a type of reaction in which two molecules react to form a larger, more complex molecule. In this reaction, one molecule must contain a double bond and the other must contain two or more electron-withdrawing groups (EWGs). The EWGs provide electron density to the double bond, allowing it to react. The double bond must also be a conjugated system, meaning it must consist of alternating single and double bonds.

Neither of the compounds X and Y undergoes a Diels-Alder reaction with maleic anhydride. The given information can be best explained by considering the molecular structure of the two compounds X and Y. Diels-Alder reaction is a chemical reaction that forms a cyclohexene ring by reacting a conjugated diene with a substituted alkene or alkyne.

Maleic anhydride is a cyclic dicarboxylic acid anhydride with a molecular formula of C4H2O3. It is a colorless or white crystalline solid with a pungent odor.

In the case of both compounds (X and Y) provided, neither contains a double bond nor a conjugated system. Without a double bond, the reaction does not occur. Without an EWG, the reaction does not occur. Therefore, these compounds do not undergo a Diels-Alder reaction with maleic anhydride.

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Answer:

answer A is the answer suii

Answer:

A

Explanation:

u put it down and let them pick it up themselves so if anything happens u are not to be blamed

The Lewis structure for NO₂⁻ is found in the attachment.

The correct statement is the nitrite ion contains 1 N-O single bond and one N=O double bond. The correct option is C.

This is because the nitrite ion (NO2-) has a resonance structure in which the double bond can move between the two oxygen atoms.

This means that the nitrite ion has a partial double bond character, where one bond is a single bond between nitrogen and one of the oxygen atoms (N-O) and the other bond is a double bond between nitrogen and the other oxygen atom (N=O).

Therefore, statement (a) is not true, as the two N-O bonds in the nitrite ion are not equivalent to 1 1/2 bonds. Statement (b) is not true, as there is only one N=O double bond in the nitrite ion. Statement (d) is not true, as there is only one N-O single bond in the nitrite ion.

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Answer:  For 1 is The diameter of a proton is 1.75× 10-15lm. The Bohr radius — the most probable distance from the nucleus to the electron — is 5.29 ×10-11lm. The diameter of a hydrogen atom is therefore 2 × 5.29 ×10-11lm = 1.058 ×10-10lm.

The substance that can be classified as a fluid at normal temperatures is oxygen (3). Fluid refers to any substance that can flow. All gaseous and liquid materials are classified as fluids.

A substance capable of continuously flowing and deforming under shared stress. Fluids are a subset of matter's phases that include liquids and gases. Fluids are substances that deform continuously when subjected to external force. These are the substances that cannot withstand shear force (the force that causes a change in shape) when applied to them. Air, water, toothpaste, molten lava, and so on. A fluid flows as a result of force or pressure.

Density-The density of a fluid is its mass per unit volume. It is the mathematical ratio of the fluids' mass to volume.

The weight of fluids per unit volume is known as specific weight. It is the mathematical ratio of the fluids' weight to volume.

Specific gravity is defined as the ratio of fluid specific weight or mass density to standard fluid specific weight or mass density. Fluids in the case of liquid standards are water, whereas fluids in the case of gases standards are air.

The resistance provided by a layer of fluids when it moves over another layer of fluids is referred to as its viscosity.

Surface tension is a tensile force that acts on the surface of a body.

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Answer:

DNA is an organism's genetic fingerprint because it contains unique genetic information that determines its development, function, and reproduction. This unique DNA sequence can be used for identification purposes, such as establishing paternity or maternity, identifying suspects in criminal investigations, and identifying remains in forensic investigations. The field of forensic science uses DNA analysis to compare DNA profiles from crime scenes to those of potential suspects, resulting in the conviction of many criminals who would have otherwise gone unpunished.