Which organic compound is saturated?

1.ethene
2.propene
3.ethyne
4.propane

The boiling points of HF, H2O and NH3 increase in the order of  NH3 < HF < H2O. Therefore, option D is correct.

​

The melting points and boiling points increase down the group because of the van der Waals forces. The size of the molecules changes down the group. This increase in size intends an increase in the property of the van der Waals forces.

Water can produce more hydrogen bond in comparison to the Hydrogen fluoride and Ammonia . If we see the bond polarity then must be HF > H2O > NH3. But in this condition major finding factor is Hydrogen bond so, the order is NH3 < HF < H2O.

Thus, option D is correct.

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The balanced equation for the single-displacement reaction between AgNO3 and Al is:
3AgNO3 + Al -> Al(NO3)3 + 3Ag

In this reaction, aluminum (Al) displaces silver (Ag) from silver nitrate (AgNO3), resulting in the formation of aluminum nitrate (Al(NO3)3) and elemental silver (Ag).

The coefficients in the balanced equation ensure that the number of atoms of each element is the same on both sides of the equation, indicating a conservation of mass.

Phases (solid, liquid, aqueous) can be included if known, but they are optional for this equation.

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According to the given picture:

A represents the atomic number.

B represents the chemical symbol.

C represents the atomic mass.

D represents the name of the element.

Answer:

phosphorus monoxide

Explanation:

coz there's one one oxygen molecule and mono means 1.....

Answer:

Length

- centimetre

- millimetre

- kilometre

- meter

Mass

- gram

- kilogram

Capacity

- liter

- millilitre

I don't know why mass is there but hope this helps! :)

d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3

Answer:

C.   Switch 4 and 5

Explanation:

edge2021

The atomic model gives a detailed understanding of the atoms and the sub-atomic particles. The models were given in order by Dalton, Thomson, Rutherford, Bohr, and Schrödinger. Thus, option C is correct.

The atomic model is the representation of the atom of the element along with the sub-atomic particles. The first model was given by Dalton, which stated that matter is composed of atoms.

Later Thomson discovered the presence of the electron present in the sea of the positive charges. In addition, Rutherford gave the presence of the positive nucleus in the middle of the atom.

Bohr's model gave the presence of the electron in the orbit of the atom around the nucleus. At last, the current atomic model was given by Schrödinger and is known as the electron cloud model.

Therefore, option C. Gina should Switch 4 (Schrödinger' model) with model 5 ( Bohr 's model).

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Answer:

weak bonds require less energy to form bonds than strong bonds

The equation that describes the total amount of pure saline in the solution is: x + y = 45.

In the given scenario, x represents the amount of saline solution and y represents the amount of saline solution. The experiment calls for a total of 45 gallons of the saline solution. Since the total amount of saline in the solution is the sum of the amounts in each component, the equation x + y = 45 represents the total amount of pure saline in the solution.

The equation simply states that the combined amounts of saline solution (x) and saline solution (y) should add up to 45 gallons, fulfilling the requirement of the experiment. It provides a straightforward mathematical representation of the relationship between the two components in terms of their total quantity.

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Answer:

The correct answer is liquid B.

Explanation:

Latent heat of vaporization also known as the latent heat of evaporation. This latent heat transforms the particles of liquid into a gas without affecting its temperature. For example, the latent heat of evaporation for water is 40.8 kJ per mole, that is, 40.8 kJ per mole of heat is needed to transform water into vapor at 373 K.  

It is known that latent heat of evaporation of a liquid is directly proportional to the cooling effect it generates, that is, more the latent heat of evaporation more will be its cooling effect. Thus, it is clear that liquid B will show the more cooling effect as the latent heat of evaporation of liquid B is more in comparison to liquid A. Thus, more heat will be captivated by liquid B and will generate more cooling effect in comparison to liquid A.  

Hydrogens bonded to oxygen have a much higher partial charge due to the oxygen atom being more electronegative than the carbon atom.

When an atom of a certain chemical element forms a chemical connection, it has a propensity to draw shared electrons (or electron density), which is represented by the symbol. The atomic number and the separation of the valence electrons from the charged nucleus have an impact on an atom's electronegativity. An atom or a substituent group will draw electrons in greater amounts the higher the associated electronegativity. The sign and amplitude of a bond's chemical polarity, which characterises a bond along the continuous scale from covalent to ionic bonding, can be quantitatively estimated using electronegativity. The inverse of electronegativity is electropositivity, which describes an element's propensity to accept valance electrons.

Oxygen has an electronegativity of 3.5, while carbon has an electronegativity of 2.5, making oxygen much more electronegative than carbon. As a result, the electrons in the hydrogen-oxygen bond will be more attracted to the oxygen atom than the carbon atom, leading to a higher partial charge on the oxygen.

Therefore,  Hydrogens bonded to oxygen have a much higher partial charge due to the oxygen atom being more electronegative than the carbon atom.

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The reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction

Elimination reactions are those that proceed by the removal of one or more atoms or functional groups from the reactants, resulting in the formation of a new double bond or π bond in a product. An example of an elimination reaction is the dehydration of alcohols.In this particular reaction, 2-methyl-2-pentanol (an alcohol) reacts with sulfuric acid to produce 2-methyl-2-pentene, which is an alkene.

The reaction mechanism proceeds via an elimination reaction, where the OH group and a hydrogen ion (H+) are removed from the reactant, resulting in the formation of a double bond between the adjacent carbon atoms in the product.The reaction can be represented as follows:CH3C(CH3)2CH(OH)CH3 + H2SO4 → CH3C(CH3)2C=CH2 + H2O + H2SO4In conclusion, the reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction.

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2 moles of ammonia and 2.5 moles of oxygen gas will produce 2 moles of nitric oxide and 3 moles of water.

The reaction between ammonia (NH3) and oxygen gas (O2) to produce nitric oxide (NO) and water (H2O) is shown below:4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)The balanced equation shows that 4 moles of ammonia react with 5 moles of oxygen gas to produce 4 moles of nitric oxide and 6 moles of water. To determine the amount of products formed when a certain amount of reactants is used, we need to use stoichiometry.Suppose we react 2 moles of ammonia with 2.5 moles of oxygen gas. From the balanced equation, we can see that the ratio of moles of ammonia to moles of oxygen gas is 4:5. Therefore, ammonia is the limiting reagent because only 2 moles of ammonia are available, which is not enough to react with 2.5 moles of oxygen gas.To determine the amount of products formed, we will use the mole ratio from the balanced equation:4 moles NH3 : 5 moles O2 : 4 moles NO : 6 moles H2O2 moles NH3 is equivalent to (5/4) × 2 moles O2 = 2.5 moles O2So, 2 moles NH3 + 2.5 moles O2 → 2 moles NO + 3 moles H2O.The number of significant digits in the answer will depend on the number of significant digits in the given amounts of reactants.

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: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

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In a flask containing a mixture of neon (Ne) and argon (Ar), with 0.250 mol of Ne exerting a pressure of 205 mmHg and Ar exerting a pressure of 492 mmHg, the mass of Ar in the flask can be calculated.

The calculation involves using the ideal gas law and the molar masses of Ne and Ar.

To determine the mass of Ar in the flask, we can use the ideal gas law, which states that 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. Since the volume and temperature are constant, we can rewrite the equation as P1/n1 = P2/n2, where P1 and n1 correspond to Ne and P2 and n2 correspond to Ar.

Given that the pressure of Ne is 205 mmHg and the pressure of Ar is 492 mmHg, and the number of moles of Ne is 0.250 mol, we can calculate the number of moles of Ar as follows:

(205 mmHg / 492 mmHg) = (0.250 mol / n2)

Solving for n2 gives us the number of moles of Ar. Once we have the number of moles of Ar, we can calculate its mass using the molar mass of Ar (39.95 g/mol).

Finally, to determine the mass of Ar in the flask, we multiply the number of moles of Ar by its molar mass.

In summary, by using the ideal gas law and the given pressures and number of moles of Ne and Ar, we can calculate the number of moles of Ar and then determine its mass using its molar mass.

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Answer:

0.000471698

Explanation:

divide 0.125 by 265.

The volume of the methane gas at a pressure of 4.1 atm is 16.2 ml, assuming no change in temperature and the amount of gas.

What is Pressure?

Pressure can be caused by a variety of factors, including the weight of a fluid or gas, the force applied by a solid object, or the momentum of particles in motion. It is an important concept in physics and engineering, as it affects the behavior of fluids and gases, and is involved in many natural and technological processes.

This problem can be solved using the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1 x V1) / T1 = (P2 x V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature of the gas, and P2 and V2 are the final pressure and volume of the gas.

In this case, we are given P1 = 2.1 atm and V1 = 32 ml, and we need to find V2 when P2 = 4.1 atm.

Assuming the temperature and amount of gas are constant, we can rearrange the formula to solve for V2:

V2 = (P1 x V1 x T2) / (P2 x T1)

Since the temperature is constant, we can simplify the formula to:

V2 = (P1 x V1) / P2

Plugging in the given values, we get:

V2 = (2.1 atm x 32 ml) / 4.1 atm

V2 = 16.2 ml

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Answer:

Both have densities greater than that of water

Explanation:

The ability of objects to either float or sink in a liquid depends on their relative densities.

If an object is denser than a liquid it will completely sink in it, but if the density of the object is less than that of the liquid, it will sink until the weight of liquid displaced is equal to the weight of the object, then it will finally float in that liquid.

In the case of the stone bead and iron beads dropped into a cup of water, hey both sank to the bottom because they are denser than water.

Answer:

This is an example of a random error because the timer is adding an extra second onto each runner's time, which is not an accurate representation of their true time. This error is not systematic, meaning that it does not affect all runners in the same way or add the same amount of time onto their times.

Explanation:

Give me brainliest if that helped :)

In the case of the equilibrium reaction provided, if the concentration of Co(H2O)2+ is increased, the reaction will shift to the right in order to consume the excess Co(H2O)2+ and produce more CoCl2 and H2O.

Conversely, if the concentration of CoCl2 is increased, the reaction will shift to the left in order to consume the excess CoCl2 and produce more Co(H2O)2+ and Cl- ions.

According to Le Chatelier's principle, a change in concentration of one or more of the reactants or products of a chemical reaction at equilibrium will cause a shift in the equilibrium position to counteract the change and re-establish equilibrium.

Specifically, if the concentration of one of the reactants is increased, the reaction will shift in the direction that consumes that reactant in order to restore equilibrium.

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Answer: 0.31

Explanation:

molarity = 0.32 mol of solute / 1 L solution

find kg of solute: 0.32 mol of solute x 146.8 g/mol = 46.976 g = 0.046976 kg

find kg of solution: 1 L solution x (1000 mL / 1 L) x (1.08 g/mL) (1 kg / 1000 g) = 1.08 kg solution

find kg of solvent: 1.08 kg solution - 0.046976 kg solute =  1.033 kg water

molality = 0.32 mol solute / 1.033 kg water = 0.31 mol/kg

According to molar concentration , the molality of the solution upto second decimal place  is 0.31  m.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion.

molarity = 0.32 mol of solute / 1 L solution.To find kg of solute-0.32 mol of solute x 146.8 g/mol = 46.976 g = 0.046976 kg. To find kg of solution: 1 L solution x (1000 mL / 1 L) x (1.08 g/mL) (1 kg / 1000 g) = 1.08 kg solution. To find kg of solvent: 1.08 kg solution - 0.046976 kg solute =  1.033 kg water.

Thus, molality = 0.32 mol solute / 1.033 kg water = 0.31 mol/kg.

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Friction and force applied on an object is inversely related to each other.

Friction refers to the force that resists the motion of an object that collide or slide against each other. If the friction is increased, more energy is needed for the movement of the object.

While on the other hand, if friction is decreased less force is needed so we can conclude that friction and force is inversely related to each other.

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In the given reaction  ₉₆²⁴⁶Cm + ₆¹²C ---> 4 ¹on + X  it shows an example of an artificial transmutation reaction.

An artificial transmutation reaction may resemble this. The method of causing nuclear reactions by blasting atomic nuclei with high-energy particles like ions or neutrons is referred to as artificial transmutation.

In this instance, the transmutation is induced by bombarding the carbon nucleus (C) with additional particles or a high-energy beam, resulting in the production of the following products: Element X and 4 1on (Helium-4)

Blasting an element with a basic particle, an element can be artificially transmuted into a different element.

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The correct numerical setup for calculating the volume of H₂(g) is to use the ideal gas law equation: PV=nRT.

To calculate the volume of a gas, we can use the ideal gas law equation, which relates the pressure, volume, amount of gas, and temperature of a gas. The equation is PV=nRT, where P is the pressure in atmospheres (atm), V is the volume in liters (L), n is the number of moles of gas, R is the ideal gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin (K).

For H₂ gas, we would need to know the pressure, temperature, and amount of gas present. If we have those values, we can rearrange the equation to solve for the volume of gas. It's important to note that this equation assumes ideal gas behavior, which may not be the case in all situations. Additionally, the units of pressure and temperature must be in the correct SI units for the equation to work.

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For a pair of coordination complexes to be enantiomers, they must have the same molecular formula and connectivity but differ in their three-dimensional arrangement.

This means that they must have a chiral center. In other words, they must have a central metal ion (m) that is coordinated with different ligands (l1, l2, l3, l4, l5) in a way that results in a non-superimposable mirror image. Two choices that can result in a pair of enantiomers are (R)-m(l1)(l2)(l3)(l4)(l5) and (S)-m(l1)(l2)(l3)(l4)(l5). These two complexes differ only in the arrangement of ligands around the metal ion, resulting in a mirror image that cannot be superimposed.

In the given generalized coordination complex, M is the central metal ion, and L1, L2, L3, L4, and L5 are five distinct ligands. To identify a pair of enantiomers, we should look for complexes with a non-superimposable mirror image, which is a key characteristic of chiral molecules. A common example is an octahedral complex with three bidentate ligands (L1, L2, and L3). In this case, if the arrangement of ligands around the central metal ion (M) creates a pair of complexes that are mirror images of each other but cannot be superimposed, then these two complexes are enantiomers.

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The pH of a solution in which one normal adult dose of aspirin (640 mg mg ) is dissolved in 10 ounces of water is 2.72.

The concentration of aspirin in water will be--

9 fl. oz = 0.266162 L. , 640 mg = 0.640 g , molar mass of aspirin = 180.157 g/mol

moles of aspirin = 0.640 g /180.157 g/mol = 3.55 x 10⁻³ mol aspirin

molarity =  3.55 x 10⁻³ mol/  0.266162L = 0.0133 M

Next, we need to set up an ice chart,

Ka = x²/(0.0133 - x)  ,with x being the concentration of H⁺ in solution

pKa = 3.5

=> Ka = 10-pka = 10-3.5 = 3.16 x10⁻⁴,  

Now, 3.16 x10⁻⁴ = x²/(0.0133 - x)

=> x² + 0.000316 x -0.0000042028 = 0

=> x = -0.000316 + 0.004112305436 / 2

Using quadratic formula we get,

x = 1.898 x10⁻³ M = [H⁺]

pH = -log [H⁺] = -log (1.898 x10⁻³) = - (log 1.898 -3 log 10) = -( 0.28-3) =2.72

Therefore. pH = 2.72

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The final temperature of the gas, after absorbing 1300 J of heat and doing 2200 J of work, is approximately 375.45 K.

To find the final temperature (T_final) of the gas, we can use the first law of thermodynamics, which states that the change in internal energy (ΔU) of a system is equal to the heat added (Q) minus the work done (W) by the system:

ΔU = Q - W

Since the gas is ideal and monatomic, the change in internal energy is related to the temperature change (ΔT) through the equation:

ΔU = nC_vΔT

where n is the number of moles and C_v is the molar heat capacity at constant volume.

Rearranging the equations and substituting the given values:

nC_vΔT = Q - W

(5.00 mol)(3/2R)ΔT = 1300 J - 2200 J

(5.00 mol)(3/2)(8.3145 J/(mol⋅K))ΔT = -900 J

Simplifying:

(37.9725 J/K)ΔT = -900 J

ΔT = -900 J / (37.9725 J/K)

ΔT ≈ -23.70 K

Since the initial temperature is 126 °C, we convert it to Kelvin:

T_initial = 126 °C + 273.15 = 399.15 K

Now we can find the final temperature:

T_final = T_initial + ΔT

T_final = 399.15 K - 23.70 K

T_final ≈ 375.45 K

Therefore, the final temperature of the gas is approximately 375.45 K.

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The Ksp value of Mg(OH)2 is A. 2.4 X 10^11.

To find the Ksp of Mg(OH)2, we need to use the equation:

Ksp = [Mg2+][OH-]^2

Since Mg(OH)2 is a strong electrolyte, it will dissociate completely in water, meaning that the concentration of Mg2+ will be equal to the concentration of Mg(OH)2, which is 3.63 times 10-4 M.

We can then use the concentration of Mg2+ to find the concentration of OH- using the equation:

Mg(OH)2 ⇌ Mg2+ + 2OH-

Since Mg(OH)2 is a 1:2 electrolyte, the concentration of OH- will be twice the concentration of Mg2+, or 2(3.63 times 10-4 M) = 7.26 times 10-4 M.

Plugging these values into the Ksp equation, we get:

Ksp = (3.63 times 10-4 M)(7.26 times 10-4 M)^2 = 2.4 times 10^11

Therefore, the answer is A. 2.4 X 10^11.

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