The table above shows the structural formulas and molar masses for three different compounds. Which of the following is a list of the compounds in order of increasing boiling points?

A. Butane < 1-propanol < acetone

B. Butane < acetone < 1-propanol

C. 1-propanol < acetone < butane

D. Acetone = butane < 1-propanol

If substitutes arise on different sides of the structure, they are trans to one another. Trans to the bromo substituent are the atoms C, E, G, H, and K.

In the picture that is attached, the substituted cyclohexane compound is displayed. If two substituents of a chemical are located on different sides of the structure, they are trans to one another. The same side of the structure hosts Cis substituents.

The substituents represented by the letters C, E, G, H, and K are those that are trans to the bromo substituent in the structure seen in the picture attached. They are located across from the bromo substitute.

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Answer:

Explanation:

The valency of a chemical element refers to the number of electrons that it can gain or lose in a chemical reaction. The valency can also be thought of as the charge on the ion of the element.

The valencies of the compounds you have provided are:

K3PO4 (Potassium Phosphate)

Potassium (K) has a valency of +1

Phosphorus (P) has a valency of +5

Oxygen (O) has a valency of -2

Al2(SO4)3 (Aluminum Sulfate)

Aluminum (Al) has a valency of +3

Sulfur (S) has a valency of +6

Oxygen (O) has a valency of -2

NaNO3 (Sodium Nitrate)

Sodium (Na) has a valency of +1

Nitrogen (N) has a valency of +5

Oxygen (O) has a valency of -2

It's worth noting that valency of elements within a compound can be determined by the oxidation state of the element and by the chemical formula of the compound. The oxidation state is determined by the number of electrons gained or lost by the element.

The signs of standard Gibbs energy, enthalpy, and entropy of precipitation would be positive, zero, and negative respectively when a soluble salt is present in which the absolute value of the lattice enthalpy is more than the absolute value of the heat of hydration.

This is because the Gibbs free energy of the system decreases as the formation of the precipitate is exothermic and entropy increases due to the formation of more particles.

The formation of a precipitate also has an effect on the pH of the solution. If the salt is an acid, the formation of the precipitate will decrease the pH, and if the salt is a base, the formation of the precipitate will increase the pH. This is because the number of free hydrogen or hydroxide ions in the solution is reduced when the precipitate forms.

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During this process, the hexanes in the flask will boil and turn into vapour at their boiling point of 68.73 °C (342 °K). This occurs because the heat being applied to the flask causes the temperature of the hexanes to increase, and when it reaches the boiling point, the liquid will begin to turn into a gas.

The vapour will then rise and escape from the flask. As the vapour exits the flask, it will cool and eventually condense back into a liquid. This process is known as "boiling."

Hexanes in the flask will boil and turn into vapour because of the heat being applied. Vapor rises and escapes from the flask, then condenses back into liquid. This is a boiling process.

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The correct formulas and coefficients for the products of the double-replacement reaction is 3 RbOH + H₃PO₄ ⇒ Rb₃PO₄ + 3 H₂O. The correct answer is C.

The positive and negative ions of two ionic compounds swap positions during a double-replacement reaction to create two new compounds. An example of a double-replacement reaction, also known as a double-displacement reaction, is:

AB+CD→AD+CB

A and C are positively charged cations in this process, whereas B and D are negatively charged anions. In aqueous solution, double-replacement reactions typically take place between compounds. A reaction must produce one of the following in order to take place: a solid precipitate, a gas, or a molecular substance like water.

Therefore, the formulas and coefficients for the products of the double-replacement reaction is 3 RbOH + H₃PO₄ ⇒ Rb₃PO₄ + 3 H₂O. the correct option is C.

Your question is incomplete but most probably your full question is What are the correct formulas and coefficients for the products of the following double-replacement reaction? RbOH + H₃PO₄ -->

a) Rb (PO₄)₃ + H₂O

b) RbPO₄ + 2H₂O

c) Rb₃PO₄ + 3H₂O

d) H₃Rb + PO₄OH

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Rusting is one of many example of corrosion. The chemical reaction for rusting is given as follows:

4Fe + 3O2 → 2Fe2O3.

Rusting is an oxidation process. Oxygen present in the air produce a powdered substance called rust. The rust is a red-orange flaky substance and the phenomenon of the formation of rust is called rusting.

In the first step iron is first oxidized to iron(II) ions by oxygen. In the second step, the iron(II) ions are again oxidized and combine with water and oxygen gas to form a hydrated form of iron(III) oxide called as rust.

Thus, Rusting is one of many example of corrosion.

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The 12.1 g (dark green) grams of C3H18 was reacted with oxygen. so, option (a) is correct.

What is oxygen?

Oxygen is one of the substances known as chemical elements since it only contains one type of atom. According to its atomic number of 8 and the recognised chemical symbol O, an oxygen atom has eight protons in its nucleus. The gas oxygen has no taste, flavor, or colour when it is at normal temperature. Natural environments contain the oxygen molecule.

What is reaction ?

Ions are electrically charged particles that can be produced by either removing electrons from neutral atoms to produce positive ions or adding electrons to neutral atoms to produce negative ions.

Therefore, 12.1 g (dark green) grams of C3H18 was reacted with oxygen.

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A material known as an inorganic mineral is one that has never been alive; it has never been joined with carbon and cannot give life to a cell. The body will actually react to these substances or metals as though they were toxins.

An inorganic mineral is tightly wrapped, making it difficult for the body to break it down. This material's electrons rotate counterclockwise, which puts them fundamentally out of rhythm with a human body.

In nature, evaporation is a common method for removing inorganic compounds from water since only the water is lost, leaving the inorganic minerals and chemicals behind.

In order to provide us with cleaner and safer drinking water, contemporary water filtration systems mimic this natural phenomena in our houses.

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Taking into account the reaction stoichiometry, the correct answer is the second option: a mass of 13 grams of C₂H₂ is required to produce 1 mole of CO₂.

In first place, the balanced reaction is:

2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: If by reaction stoichiometry 4 moles of CO₂ are formed by 52 grams of C₂H₂, 1 mole of CO₂ is formed by how much mass of C₂H₂?

mass of C₂H₂= (1 mole of CO₂× 52 grams of C₂H₂)÷ 4 moles of CO₂

mass of C₂H₂= 13 grams

Finally, a mass of 13 grams of C₂H₂ is required.

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To find the time required for 2.00 M PH3 to decrease to a concentration of 0.350 M, we can use the concept of first-order reactions. The rate of a first-order reaction is given by the equation:

-d[A]/dt = k[A]

Where:

-d[A]/dt = rate of the reaction (M/s)

k = rate constant (s^-1)

[A] = concentration of the reactant (M)

In this case, the reactant is PH3, and the concentration is decreasing over time. The rate of the reaction is proportional to the concentration of the reactant, and the rate constant is a constant value for a given reaction.

We know that the initial concentration of PH3 is 2.00 M, and the final concentration is 0.350 M. We also know that the time required for 1.00 M PH3 to decrease to 0.250 M is 120 s. We can use this information to find the rate constant k for the reaction.

We know that:

-d[A]/dt = k[A]

We can use the initial and final concentrations of PH3 to find the change in concentration over time and the rate of the reaction:

-d[A]/dt = (0.250 - 1.00) M / 120 s = -0.0075 M/s

Now that we know the rate of the reaction, we can use it to find the time required for 2.00 M PH3 to decrease to a concentration of 0.350 M.

We know that:

-d[A]/dt = k[A]

and we can rearrange the equation to find the time:

-d[A]/[A] = kdt

We can use the initial and final concentrations of PH3, and the rate constant k to find the time:

(0.350 - 2.00) / (-0.0075) = t

t = (1.65/0.0075) = 220 s

So, the time required for 2.00 M PH3 to decrease to a concentration of 0.350 M is 220 seconds.

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The type of reaction is Fe and O2 is oxidation - reduction reaction. This also known as redox reaction.

In this reaction, the iron (Fe) is oxidized (loses electrons) to form iron(III) oxide (Fe2O3), while the oxygen (O2) is reduced (gains electrons) to form water (H2O).

4Fe + 3O2 ---> 2Fe2O3

Yes, an oxidation-reduction (redox) reaction is a type of chemical reaction in which the oxidation state of one or more atoms changes. Oxidation refers to the loss of electrons by a molecule or atom, while reduction refers to the gain of electrons. These two processes are closely related and often occur simultaneously in a redox reaction. The transfer of electrons from one species to another is the key feature of redox reactions. In the example I provided earlier, the iron loses electrons in the process of oxidation and the oxygen gains electrons in the process of reduction.

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Yes, it is right; a base that dissolves in water is known scientifically as an alkali. A base with a pH higher than 7.0 is an alkali, which dissolves in water.

Their capacity to neutralize acids and produce hydroxide ions (OH-) in solution define them. Sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2) are a few typical examples of alkalis. Alkali are widely employed in a wide range of industrial and domestic applications, such as cleaning agents, pH regulators, and compounds to neutralize acidic substances. The group of elements found in group 2 of the periodic table are known as alkali earth metals. They are known as "alkali earth metals" because they are found in compounds that resemble those of the earth metals and share characteristics with the group 1 alkali metals.

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Question - scientific name for a base that dissolves in water? Alkali.

State is it true or false.

The concentration of Rubidium ions in a 264.3990 mm solution of [tex]Rb_{2} S[/tex] is  5.28 ×[tex]10^{2}[/tex] mm.

Dissociation reaction involves the separation of ions that occurs when a solid ionic compound dissolves and the molecules separate or split into smaller particles. This occur when one molecule is divided to form two smaller ones leading to a decrease in energy. Dissociation reactions result in the break down of a large molecule to form smaller products.

The dissociation reaction of [tex]Rb_{2} S[/tex] is given as,

[tex]Rb_{2} S[/tex] ----> 2[tex]Rb^{+}[/tex] + [tex]S^{2-}[/tex]

The concentration of[tex]Rb_{2} S[/tex] is 264.3990 mm

From the dissociation reaction,

Concentration of [tex]Rb^{+}[/tex] = 2 × 264.3990 mm

[tex]Rb^{+}[/tex] = 528.798 mm

= 5.28798 × [tex]10^{2}[/tex] mm

= 5.28 ×[tex]10^{2}[/tex] mm

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oxidation-reduction reactions is a reaction that involve the transfer of electrons from one species to another.

Redox reactions, also referred to as oxidation-reduction processes, are reactions in which electrons are transferred from one species to another. An oxidized species is one that has lost electrons, whereas a reduced species has gained electrons.

By assuming that all bindings to the atoms in molecules are ionic, we can use the oxidation numbers assigned to atoms in molecules to detect redox reactions. In a reaction, oxidation is shown by an increase in the number of oxidations, and reduction is indicated by a drop.

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Dispersion force of intermolecular force forms between all types of molecule due to the presence and movement of electrons around the molecule.

The term dispersion force is defined as a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that build the atoms to form temporary dipoles.

Whether they are polar or nonpolar, all molecules exhibit dispersion forces. Atoms and molecules that are bigger and heavier show larger dispersion forces than those that are smaller and lighter.

Thus, Dispersion force of intermolecular force forms between all types of molecule due to the presence and movement of electrons around the molecule.

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The products for the net ionic reaction that would occur when an aqueous solution of H2SO4 is combined with an aqueous solution of Na3PO4 are: H3PO4 (aq), Na+(aq), SO42-(aq).

H2SO4 is a strong acid and Na3PO4 is a salt of a weak acid (H3PO4) and a strong base (Na+).

When H2SO4 is added to Na3PO4, H3PO4 will be neutralized by H2SO4 and forms H3PO4 and SO42-

Also, the Na3PO4 will dissociate in water forming Na+(aq) and PO43-(aq).

It's important to note that the products of the reaction will be the conjugate acid and conjugate base of the reactants, and they will be in an aqueous form.

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The empirical formula of the given compound is  CH₂O and the molecular formula of the given compound is C₆H₁₂O₆.

The mass of the Carbon = 48.38 g

The molar mass = 12 g/mol

The moles = mass / molar mass

                  = 48.38 / 12

                 = 4 mol

The mass of the hydrogen = 6.74 g

The moles = mass / molar mass

                  = 6.74 / 1

                  = 6.74

The mass of the oxygen = 53.5 g

The moles = mass / molar mass

                  = 53.5 / 16

                  = 3.3 mol

Dividing the smallest one , we get:

C = 1 mol

H = 2

O = 1

The empirical formula is CH₂O.

The molecular formula = n( empirical formula )

n = molar mass of compound / molar mass of empirical formula

n = 180.15 / 30

n = 6

The molecular formula = C₆H₁₂O₆.

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The maximal number of hydrogen bonds a single molecule of methanol can form with surrounding water molecules are three.

Methanol can act as both as a hydrogen bond donor and as a hydrogen bond acceptor. Methanol is similar to formaldehyde. It contains oxygen. Oxygen is very polar. The difference in their boiling points is due to the very strong hydrogen bonds in methanol. Hydrogen bonding occurs when there is a significant amount of positive charge building up on a hydrogen atom. Methanol is a polar molecule. The oxygen being the negative area and the hydrogen being the more positive area. Methanol is a alcohol that is used as a solvent, pesticide and other fuel source. It also occurs naturally in humans, animals and plants.

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Answer:

Low Energy

Hope it helps

Answer:

74.093 grams

Explanation:

Answer and Explanation: The mass of a mole, or molar mass, of Ca(OH)2 is 74.093 grams. This is the combined molar mass of each of the atoms in the molecule: one calcium atom, two oxygen atoms, and two hydrogen atoms.

Molarity is measured in moles per liter (mol/L). A solution with a concentration of 1 mol/L is referred to as a 1 M solution or has a concentration value of 1 molar.

The mole is a fundamental (SI) unit of substance measurement. This quantity is also known as the chemical amount. A substance is something with mass that occupies space. The molar mass/molecular weight is the total mass in grams of the atoms that make up a molecule per mole. In order to know that M is denoted for molarity. It is referred as number of moles per liter of solution.  In other terms, a solution with a concentration of 1 mol/L is referred to as 1 molar, abbreviated as 1 M. And 1 M is one times smaller than a mol/L and one mole is equivalent to 6.02214179 molecules or other elementary units.

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The mole ratio of hydrogen to ammonia is 3:1. The formula for ammonia is NH3.

Second, ammonia has a high hydrogen weight fraction. Hydrogen accounts for 17.65% of ammonia’s mass. When these two characteristics are coupled, the outcome is a liquid that is simply confined and has a volumetric hydrogen density that is approximately 45% more than liquid hydrogen.

Using the atomic masses, convert the mass of each element to moles of each element. Divide the number of moles of each element by the least number of moles to find the ratio or moles of each element. The mole table organizes all of the information required to estimate the limiting reagent and theoretical yield, which are then utilized to compute percent yield. The percentage yield informs the chemist.

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The net ionic equation for the following double replacement reactions is 2 Ag²[tex]\rightarrow[/tex]2 Ag³[tex]^+[/tex] as all the ions present on reactant and product side which will get cancelled.

Ionic equation is defined as a chemical equation which represents electrolytes in aqueous solutions and are expressed as dissociated ions. Ions present in aqueous solutions are stabilized by ion dipole interactions with the water molecules which are present.

An ionic equation can be written for any electrolyte which dissociates and reacts with the polar solvent. In a balanced ionic equation , number and type of atoms on each sides of reaction arrow are same. Even the net charge on both sides of the arrow is same.

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The concentration in units of mole fraction is calculated to be 1.80 × 10⁻⁵ when the solubility of oxygen gas in water at 40° C is 1.0 mmol/l of solution.

In the 1 Liter of a solution, the solubility of 1.0 mmol/L can be written as:

= 0.001 mol of oxygen.

However, the moles of water in 1L can be calculated as follows;

We know that 1 L of water = 1000 mL of water.

Lets assume that the density of the water is 1.0 g/mL

density = mass/volume

Making mass the subject of the formula:

Mass = density × volume

Mass = 1.0 g/mL× 1000 mL

Mass of water = 1000 g

number of moles = mass(g)/molar mass

Given the number of moles of water are 1000 g/ 18.02 g/mol

Given the number of moles of water are 55.49 moles

Mole Fraction of oxygen = no. of moles/ total no. of moles in the system

Mole Fraction of oxygen= 0.001 moles/55.49 moles

mole fraction of oxygen = 1.80 × 10⁻⁵.

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The resulting mixture will have a sugar concentration of 22.22% when 5g of sugar is added to a 45g of serving which is 10% sugar.

This is calculated by adding the grams of sugar (5g) to the existing grams of sugar (4.5g) and dividing by the total grams of cereal (45g). The resulting percentage is then multiplied by 100 to express it as a percentage.

5+4.5=9.5

9.5/45×100=21.11

To put this into perspective, the original 10% sugar concentration translates to 4.5g of sugar in the 45g serving, and the addition of the 5g of sugar brings the total to 9.5g of sugar.

When divided by the total of 45g of cereal, this yields a concentration of 21.11%, which is then multiplied by 100 to give the final percentage of 22.22%.

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There are 3 oxygen atoms present in 1 mole of CaCO₃.

Calcium carbonate (CaCO₃.), is a molecule containing one atom of calcium (Ca), one atom of carbon(C) and three atoms of Oxygen (O).

Mole is defined as the ratio of the mass of a given substance to the molar mass of that substance. Molar mass is the sum of all the individual atoms present in a molecule.

The molar mass of CaCO₃ is : ( 40 + 12 + 16×3 )g/mol = 100 g/mol

1 mole of any substance is equal to 6.022 × 10²³ atoms , molecules or ions present in it.

6.022 × 10²³  is known as Avogadro's number.

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Seven electrons are altogether present in the neutral chlorine atom's maximum occupied energy level.

The outer energy level that electrons in an atom occupy is designated by the period number (abbreviated as "n").

The amount of energy levels that an element has depends on the period number it is in.

The number of electrons in atoms rises within the same orbit as we travel through a period in a periodic table from left to right.

So, we may conclude that the period number indicates the maximum energy level that an atom's electrons are currently occupying.

The electrons' greatest energy level is indicated by the period number.

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From the graph, the distance for the first 10 minutes is 600 meters.

10 minutes = 10 x 60 = 600 seconds

Ruth's speed for the first 10 minutes = distance/time

                                                            = 600/600 = 1 m/s

Average speed = total distance traveled/total time taken

Total distance = 1400 meters

Total time = 25 minutes = 25 x 60 = 1500 seconds

Average speed = 1400/1500 = 0.93 m/s

Ruth had traveled 800 meters before stopping to talk to her friend:

1400 - 800 = 600 meters.

Thus, she was 600 meters away from home when she stopped.

She stopped between 10 and 20 minutes:

20 - 10 = 10 minutes

Thus, she stopped to talk to her friend for 10 minutes.

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Molecules with many polar covalent bonds are polar and can interact with water.

Polar covalent bonds are chemical bonds in which the electrons are shared unevenly between the atoms. This creates a partial positive charge on one end of the molecule and a partial negative charge on the other end. When a molecule has many polar covalent bonds, it means that it has many regions of partial positive and partial negative charges. These regions of partial charges create a polar molecule, which can interact with water. Water is also a polar molecule, it has a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms. This means that polar molecules can interact with water through hydrogen bonding, which is a type of attractive force between a partial positive charge and a partial negative charge.

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We get carbon dioxide, CO₂ from the methane, CH₄ is by the of the combustion reaction of the methane in the presence of the oxygen.

The combustion reaction of the methane is given as :

CH₄   +   2O₂     ----->   CO₂  +   2H₂O

The reaction of the methane with the oxygen produce the carbon dioxide and the water. The amount of the energy is released during the combustion reaction of the methane is 890 kJ/mol.

The one mole of the methane, CH₄   produces the 1 mole of the CO₂ , carbon dioxide.

Thus, the carbon dioxide is produced by the combustion of the methane.

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