10 which substance contains only ionic bonds? a nano3 b h3po4 c nh4cl d cacl2

Potassium sulfate, calcium carbonate, and iron(II) hydroxide are all soluble in water, while lead(II) fluoride and copper(I) nitrate are not soluble in water.

Solubility is a measure of how much of a substance can dissolve in a given solvent. The solubility of a substance depends on the physical and chemical properties of both the substance and the solvent. Generally, a substance is more soluble in a solvent if the two substances have similar polarities, as this allows the molecules of the two substances to interact more easily.

The temperature also affects solubility, as increasing the temperature of a solution often increases the solubility of the solute. Additionally, the pressure can affect solubility, as increasing the pressure on a solution increases the solubility of the solute.

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The Moon gets its light from the Sun. In the same way that the Sun illuminates Earth, the Moon reflects the Sun's light, making it appear bright in our sky.

Dissimilar to a lamp or our sun, the moon doesn't produce its own light. Moonlight is literally sunlight that shines on the moon and rebounds off. The light reflects off old volcanoes, craters, and lava moving on the moon's surface. The moon shines because its surface reflects light from the sun.

Sunlight is reflected off the moon in spread reflection, which is a light reflection that is involved when light rays hit a rough surface. The surface of the moon is very rough and uneven, creating light rays to hit the moon and reflect back in many different directions.

So we can conclude that The Moon is a dispersed reflector. The sunlight which hits it goes in all directions.

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At the freezing point, the liquid form of a substance is in equilibrium with

the solid form of the substance.

It is approximately the same temperature between the freezing and melting points. At 0 degrees Celsius, liquid water freezes and solid ice melts. When a phase transition takes place from liquid to solid or solid to liquid, temperature doesn't change.

Freezing. The average energy of the molecules in a liquid drops as it cools. It is a condition of equilibrium between opposing forces or actions that can be static as when forces act on a body and the resultant is zero or dynamic, such in a chemical reaction that is reversible and has equal rates of reaction in both directions.

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The electronic configuration of antimony is Kr 4d¹⁰ 5s² 5p³. The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration.

The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also known as electronic structure and electron configuration.

The number of electrons within every orbital is denoted by a superscript, and the occupied orbitals are listed in order of filling to represent the electronic configuration of such an atom inside the quantum-mechanical model. The electronic configuration of antimony is Kr 4d¹⁰ 5s² 5p³.

Therefore,  the electronic configuration of antimony is Kr 4d¹⁰ 5s² 5p³.

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The amount of KOH required to neutralize 3.25 g of acid HX dissolved in 250 cc of water is approximately 0.0052 mol, or approximately 5.2 g (assuming the molecular weight of KOH is 56.1 g/mol).

The amount of potassium hydroxide (KOH) required to neutralize the solution made from 3.25 g of acid HX in 250 cc of water can be calculated as follows: First, we need to determine the concentration of the acid HX solution. This can be done by dividing the mass of the acid (3.25 g) by its volume (250 cc) and converting the units to moles:

3.25 g / 250 cc = 0.013 mol/cc

Next, we can use the information given in the question to calculate the number of moles of KOH required to neutralize 30.2 cc of the acid HX solution:

30.2 cc * 0.013 mol/cc / 25 cc = 0.0052 mol

So, the amount of KOH required to neutralize 3.25 g of acid HX dissolved in 250 cc of water is approximately 0.0052 mol, or approximately 5.2 g (assuming the molecular weight of KOH is 56.1 g/mol).

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Flavor refers to the taste and aroma sensation perceived when eating or drinking a substance.

The flavor is a combination of taste and smell, with the majority of the flavor experience being contributed by the sense of smell, also known as olfaction.

If olfaction does not take place when tasting a substance, the taste experience is greatly affected. The sense of smell plays a crucial role in flavor perception, as it can enhance or diminish the taste sensations perceived by the tongue.

Without the sense of smell, the taste experience is limited to basic tastes like sweet, sour, salty, bitter, and umami. The overall experience of flavor will be greatly reduced and the taste of the substance may seem bland or unappealing.

In conclusion, the sense of smell plays a crucial role in our taste experience, and without it, flavor perception is greatly reduced.

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[tex]Ae^(-75000/8.314*323)[/tex] = k0 is the rate constant for the reaction at 50 ∘C. If the frequency factor and activation energy do not change as a function of temperature.

A) The rate constant (k) of a reaction can be calculated using the Arrhenius equation:

k = [tex]Ae^(-Ea/RT)[/tex]

Where A is the frequency factor, Ea is the activation energy, R is the gas constant (8.314 J/mol*K), T is the temperature in Kelvin, and e is the natural logarithm base. Assuming the frequency factor and activation energy are constant, the rate constant can be calculated as follows:

T = 50 + 273 = 323 K

k = [tex]Ae^(-Ea/RT)[/tex] = [tex]Ae^(-75000/8.314*323) = k0[/tex]

Here, k0 is the rate constant at a reference temperature. To determine the rate constant at 50 ∘C, we need to know the value of k0, which is not provided.

B) The temperature at which the reaction rate would be doubled can be calculated using the Arrhenius equation as follows:

k1 = [tex]2k0 = 2Ae^(-Ea/RT)[/tex]

T1 = [tex](Ea/R) * ((-ln(2k0/A))^(-1))[/tex]

Here, k1 is the rate constant at the temperature T1, at which the reaction rate would be doubled. To calculate T1, we need to know the values of k0 and A, which are not provided.

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1.73 grams of Silicon-containing product forms.

To find the amount of product formed, we need to first find the number of moles of product produced by multiplying the number of moles of the reactant by the reaction yield (0.77). Then we can convert the number of moles to grams using the molar mass of the product.

0.0800 mol * 0.77 = 0.0616 mol product

The molar mass of silicon (Si) is 28.09 g/mol, so the mass of the product can be found as follows:

0.0616 mol * 28.09 g/mol = 1.73 g (rounded to 2 significant figures)

So, 1.73 grams of Si-containing product forms.

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The volume density of silicon atoms can be calculated as follows:

The mass of one silicon atom is 28.085 g/mol and the volume of one unit cell can be calculated using the lattice constant:

Where a is the lattice constant. Putting these values together:

Areal density on the (110) plane can be calculated as follows:

The surface area of one unit cell on the (110) plane can be calculated as:

Putting these values together:

Note: These calculations are based on the assumption that the unit cell is cubic and the values are based on a single atom in the unit cell.

The atom is a basic unit of matter, consisting of an atomic nucleus and a cloud of negatively charged electrons that surrounds it. The atomic nucleus consists of positively charged protons and neutrally charged neutrons (except in the atomic nucleus of Hydrogen-1, which has no neutrons).

The electrons in an atom are bound to the nucleus by electromagnetic forces. A collection of such atoms can also bond with each other, and form a molecule. Atoms containing the same number of protons and electrons are neutral, while those containing a different number of protons and electrons are positive or negative and are called ions. Atoms are grouped based on the number of protons and neutrons contained in the atomic nucleus. The number of protons in an atom determines the chemical element of that atom, and the number of neutrons determines the isotope of that element.

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The cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.

Since cost is typically given in terms of moles, we must first calculate the number of moles of each chemical in one ton. To do this, we must know the molecular mass of each chemical. The molecular mass of chlorine is 70.906 g/mol and the molecular mass of ammonia is 17.030 g/mol. Thus, one ton of chlorine (1,000,000 g) contains 14,158.7 moles and one ton of ammonia (1,000,000 g) contains 58,822.2 moles. To calculate the cost per ton, we multiply the cost per mole by the number of moles in one ton. Thus, the cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.

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Answer:

The name of the compound Cu(C2H3O2)2 is Copper(II) acetate.

In this name "Copper" refers to the element copper (Cu) and the "II" in parentheses refers to the oxidation state of copper which is +2. "Acetate" is the anion name of C2H3O2, which is the anion present in the compound.

The IUPAC name of the compound Cu(C[tex]_2[/tex]H[tex]_3[/tex]O[tex]_2[/tex])[tex]_2[/tex] is Copper(II) acetate. In this name, "Copper" means the chemical element copper (Cu), and the "II" in brackets stands for copper's +2 oxidation state.

Whether either an ongoing link or a ring, the greatest number of carbons joined by a single bond serves as the basis for IUPAC nomenclature. According to a certain set of priorities, any deviations, whether multiple bonds and atoms other than hydrogen and carbon, are denoted by prefixes or suffixes. In this name, "Copper" means the chemical element copper (Cu), and the "II" in brackets stands for copper's +2 oxidation state. The compound's anion, C[tex]_2[/tex]H[tex]_3[/tex]O[tex]_2[/tex], is known by its anion name "acetate".

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Thalidomide was prescribed to pregnant women in the 1950s as a "wonder drug" to treat morning sickness, but it was halted because both enantiomers of the drug caused severe birth defects and brain damage in their babies. So the correct option is "d".

Thalidomide had two enantiomers, one of which was active and one of which was inactive. It was believed that the active enantiomer was responsible for the drug's therapeutic effects, but it was later discovered that both enantiomers caused the serious side effects. This led to the eventual halt of the drug in 1961, and it has since become a cautionary tale about the importance of testing drugs for safety before releasing them to the public.

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Estimating the hard sphere radius of Argon, Vv for solid, liquid, and gas Argon is as follows:

The hard sphere radius of Argon can be estimated using the following equation:

Where V is the volume occupied by 1 Argon atom, and N is Avogadro's number. The volume occupied by 1 Argon atom can be calculated using the lattice constant (cubic unit cell edge length) of the face-centered close-packed structure of Argon:

Computing Vv for solid fcc Argon:

The packing fraction for a close-packed structure can be calculated using the following equation:

Computing Vv for liquid Argon:

The packing fraction for a liquid can be calculated using the following equation:

Computing Vv for Argon gas at STP:

The packing fraction for a gas can be calculated using the following equation:

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Complete Question:

Packing Fractions in the Gas, Liquid and Crystalline States

(a). The atomic weight of argon is 39.98 g/mol . Argon (noble gas) atoms can be well approximated as hard spheres. Argon crystallizes at about −190C into a face-centered close packed structure having four atoms per unit cell and a lattice constant (cubic unit cell edge length) of 5.43 A . Estimate the hard sphere radius of argon and compute Vv  for solid fcc argon.

(b). The density of liquid argon just above its melting point is 1.40 g/cm ^3 Calculate Vv for liquid argon.

(c). The density of argon gas at standard temperature and pressure (STP) is 1.784 g/1. Thus, one liter of argon gas at STP weighs 1.784 g. Calculate the packing fraction, Vv for argon at STP.

To maximize conversion in a reversible exothermic reaction, the reaction temperature profile should be designed to drive the reaction towards completion while avoiding excessive temperature increase.

This can be done by starting the reaction at a low temperature and gradually increasing the temperature to drive the reaction forward. Once the maximum conversion is achieved, the temperature should be carefully controlled to prevent excessive heat generation, which can drive the reaction in the reverse direction. A conversion-temperature plot can be used to optimize this temperature profile by plotting conversion against temperature and determining the temperature at which maximum conversion occurs. By using this information, the optimal temperature profile can be determined to maximize conversion in a batch reactor. To maximize conversion in a reversible exothermic reaction, the reaction temperature profile should be designed to drive the reaction towards completion while avoiding excessive temperature increase.

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Fat and protein are catabolized by different pathways, with fat being broken down into fatty acids and glycerol, and protein being broken down into amino acids.

Fat catabolism:

Fat in the form of triacylglycerols stored in adipose tissue is broken down by lipases into fatty acids and glycerol.

The fatty acids are transported to the mitochondria where they undergo beta-oxidation, a series of reactions that results in the production of acetyl-CoA which can be used in the citric acid cycle (also known as the Krebs cycle) to generate energy.

Protein catabolism:

Proteins are broken down into individual amino acids by proteases in the lumen of the gut, or by lysosomal proteases in the cytoplasm.

The amino acids are then transported to the liver where they undergo further breakdown. Non-essential amino acids can be converted into glucose or other energy-yielding intermediates, while essential amino acids must be converted into intermediates that can be used by the citric acid cycle.

Both fat and protein are catabolized for energy production, but the pathways involved are different.

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The 2019 Nobel Prize in Chemistry was awarded to John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino for the development of lithium-ion batteries.

A lithium-ion or Li-ion battery is described as a type of rechargeable battery which uses the reversible reduction of lithium ions to store energy.

Professor Goodenough a  at the University of Texas, discovered that lithium cobalt oxide can be used as a cathode in batteries.

Professor  Whittingham, at Binghamton University, developed the first functional lithium-ion battery by using a lithium metal anode and a titanium disulfide cathode.

Yoshino, a researcher at Asahi Kasei Corporation and Meijo University, removed the lithium metal from the anode, making the battery safer and longer-lasting by using petroleum coke instead.

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An atom of the isotope 133 Cs⁺ contains the number of  protons (p), neutrons (n), and electrons (e) is 55 p. 78 n. 54 e.

The Isotopes are the atoms of same element which have the same number of the protons but different number of the neutrons.

The number of protons in cesium = atomic number

                                                         = 55

The number of the electrons for the Cs⁺ ion :

 The number of the electrons    = 54

Atomic mass = number of protons + number of neutrons

The   number of neutrons = atomic mass - number of protons

                                    = 133 - 55

                                    = 78

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An electron should contain 8 electrons within its outer shell, according to the octet rule. Therefore, octet rule gives stability to an element.

An electron should contain 8 electrons in its outer shell, according to the octet rule, which is a general chemical rule of thumb. Furthermore, it is observed that, with the exception of a few atoms from the p block identified as hydrogen, lithium, as well as helium, the majority of the elements from the s-block and p-block adhere to this norm.

For instance, the component carbon dioxide adheres to the "Octet Rule," which governs the binding of information. An electron should contain 8 electrons within its outer shell, according to the octet rule, a general chemical rule of thumb.

Therefore, octet rule gives stability to an element.

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At the blood alcohol level concentration of 0.03-0.05%, we will begin feeling the effects of alcohol.

Hence, B is the correct option.

Blood Alcohol Concentration or BAC basically refers to the percentage of alcohol, which is ethyl alcohol or ethanol, in a person's blood stream. A blood alcohol concentration of 0.10% would mean that an individual's blood supply would contain one part alcohol for every 1000 parts blood.

When the blood alcohol concentrations are 0.03-0.05 percent, we begin feeling the effects of alcohol. Our body starts getting a feeling of well being. When the BAC gets above that, up to about 0.08%, it impairs our  judgement and BAC above that puts us at risk.

--The given question is incomplete, the complete question is

At what blood alcohol concentration are you likely to begin feeling the effects of alcohol?

A. 0.01-0.02%

B. 0.03-0.05%

C. 0.06-0.08%

D. 0.08-0.10%"--

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The best beaker to represent a solution containing the weak electrolyte H2SO3 (a weak acid) is Beaker A.

This is because the solution will contain hydrogen (H+) and sulfate (SO3-) ions, and the hydrogen ions will be attracted to the partially-filled oxygen atoms in the water molecules, forming hydrogen bonds.

The hydrogen bonds will be weaker than the covalent bonds between the hydrogen and oxygen atoms, making Beaker A the best representation of the solution.

Hydrogen bonds are interactions between molecules that are formed when a hydrogen atom, which is slightly positively charged, is attracted to a slightly negatively charged atom, such as an oxygen or nitrogen atom.

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ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties that ensure reliable data transactions in a database management system.

ACID transactions are essential for ensuring the reliability of data in a database management system and are particularly important for mission-critical applications where data integrity is a top priority.

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The concentration of the 32.00 ml of the lithium hydroxide solution if it is neutralized in the titration by 18.76 ml of 0.1850 mol/l sulfuric acid is 0.215 M.

The chemical reaction is :

2LiOH  +  H₂SO₄    --->  Li₂SO₄  +  2H₂O

The molarity of the H₂SO₄ = 0.1850 mol/L

The volume of H₂SO₄ = 18.76 mL = 0.01876 L

The moles of H₂SO₄ = 0.1850 × 0.01876

                                   = 0.0034

1 mole of H₂SO₄ react with 2 moles of the LiOH

The moles of the LiOH = 0.0069

The concentration of the LiOH = moles / volume in L

                                                   = 0.0069 / 0.032

                                                    = 0.215 M

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0.0257 mm2 is equivalent to 25700 μm2 when using the conversion formula of 1 mm2 = 1000000 μm2.

The conversion formula for converting mm2 to μm2 is:

1 mm2 = 1000000 μm2

Therefore, to convert 0.0257 mm2 to μm2, we must first multiply 0.0257 by 1000000. This results in 25700 μm2, which is the equivalent of 0.0257 mm2.

To illustrate how this works, the conversion can be expressed in the following equation: 0.0257 mm2 × 1000000 = 25700 μm2.

In summary, 0.0257 mm2 is equivalent to 25700 μm2 when using the conversion formula of 1 mm2 = 1000000 μm2. This formula can be used to quickly and accurately convert any mm2 value to its corresponding μm2 value.

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Explanation:

So 2 moles of carbon reacts with 2 moles of oxygen to produce 2 moles of CO2.

A mole of CO2 molecules (we usually just say “a mole of CO2”) has one mole of carbon atoms and two moles of oxygen atoms. The atom ratio and the mole ratio of the elements are identical! 1-).

1 mole of CO2 = 1 × 12 + 2 × 16 = 44 g. 2 mole of CO2 = 2 × 44.0 = 88.0 g.

The most important interrelationship between the carbon cycle and the water cycle is the loss of water from the oceans through the evaporation.

The interrelationship between the carbon and the water cycle is the loss of water from the oceans through the evaporation. The water is evaporated into the atmosphere and then condensed into the precipitation. The water cycle is the regular movement of the water between the hydrosphere, the lithosphere, the atmosphere and the cryosphere.

These will leads to a change in the movement of carbon. The carbon cycle is process in which the carbon atoms will continuously travel from atmosphere to the Earth , then come back into the atmosphere.

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In general, closed reduction is used for simple fractures that can be reset without cutting through the skin. Open reduction is necessary for more severe fractures, such as compound fractures, where the broken bone has punctured the skin or the fracture is not amenable to resetting through closed reduction.

A fractured bone's shattered ends can be reset without surgery via closed reduction. The shattered ends of the bone must need surgery to be placed in their proper anatomical positions after open reduction. Closed reduction would probably be necessary for a partial fracture. Open reduction would be necessary for a complex fracture.

In a non-surgical procedure known as "closed reduction," the damaged bone is straightened without a skin incision. The procedure often includes pulling or manipulating the bone manually while under local or general anaesthesia.

On the other hand, open reduction requires surgery to correct the shattered bone. When closed reduction is not an option or the shattered bone is badly malpositioned, it is often carried out.

Simple fractures, when the shattered bone is still in alignment and may be moved with manual manipulation or traction, are most likely to result in closed reduction.

In complicated fractures, where the fractured bone has pierced the skin, or in severe fractures, where the broken bone is severely displaced and cannot be realigned with closed reduction, open reduction is more likely to take place.

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Considering a buffer solution where, weak acid > conjugate base, then the pH of the solution will be lesser than the pKa value.

A mixture containing a weak acid as well as its conjugate base or a mixture containing a weak base as well as its conjugate acid is known as a buffer solution or simply, a buffer.

In the given buffer solution, weak acid > conjugate base.

We know that,

pH = pKa + log₁₀ { [A⁻] / [HA⁻] }

So, when the weak acid has the same concentration as the conjugate base, then the pH = pKa.

But, since the concentration of the weak acid is higher than that of the conjugate base, the value of the pH will be lesser than the value of pKa as now the concentration of acid is higher.

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If you start with 6.03 g of crude sulfanilamide and recrystallize it from ethanol to recover 4.82 g of pure sulfanilamide, the percent recovery is 80.1%.

Sulfanilamide, commonly known as sulfanilamide, is an antibacterial sulfonamide medication. It is an organic molecule made composed of an aniline that has been derivatized with a sulfonamide group.

To calculate the percent recovery, we'll divide the mass of pure sulfanilamide obtained (4.82 g) by the initial mass of crude sulfanilamide (6.03 g) and multiply by 100 to express the result as a percentage:

Percent recovery = (mass of pure sulfanilamide obtained / initial mass of crude sulfanilamide) x 100

= (4.82 g / 6.03 g) x 100

= 80.1%

So, the percent recovery in this case is 80.1%.

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