How does each of the following affect the solubility of an ionic compound: (a) Lattice energy Increasing solubility with increasing lattice energy. Lattice energy does not affect solubility. Decreasing solubility with increasing lattice energy. (b) Solvent (polar vs nonpolar) Ionic compounds are more soluble in a polar solvent. Solvent polarity does not affect solubility. Ionic compounds are more soluble in a nonpolar solvent. (c) Enthalpies of hydration of cation and anion Increasing solubility with increasing enthalpy of hydration. Enthalpy of hydration does not affect solubility. Decreasing solubility with increasing enthalpy of hydration.

Answer:

22.6 g

Explanation:

First we use the PV=nRT equation:

We input the data:

And solve for n:

Then we convert 0.708 moles of oxygen gas (O₂) to grams, using its molar mass:

A. The mole fraction of isopropanol in the solution is 0.124

B. The mass percent of isopropanol is 12.4%

C. The molality of isopropanol is 7.86 M

Mole fraction = mole / total mole

Mole fraction of isopropanol = 0.470 / 3.79

Mole fraction of isopropanol = 0.124

Percentage = (mole / total mole) × 100

Percentage of isopropanol = (0.470 / 3.79) × 100

Percentage of isopropanol = 12.4%

Molality = mole / Kg of water

Molality of isopropanol = 0.47 / 0.05976

Molality of isopropanol = 7.86 M

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The structures are shown in the image attached.

A structural formula is the representation of the molecule in which all atoms and bonds in the molecule are shown.

Since the question requires that all the lone pairs, formal charges and sigma and pi bonds should be shown, then the simple condensed structural formula becomes insufficient in this case.

I have attached images of the structural formula of sodium benzoate (image 1), benzoic acid (image 2)  and tetrahydrofuran (image 3).

All the formal charges, lone pairs as well as sigma and pi bonds are fully shown.

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Answer:

The definition has been defined throughout the clarification segment below, as per the provided case.

Explanation:

Polypeptides were essential amino acids although therefore realize that those acids become charged individually, provide various R groups but have specific isoelectric positions as well.

The polypeptides could be divided by analysis of multiple isoelectric points including fulfilling the following, even though a protein always at the isoelectric point seems to have the end up losing money.

Answer:mathematical and map

Explanation:

mathematical and map

Explanation:

Answer:

✅

Explanation:

true

sana makatulong po sa inyo

Answer:

During the early Paleozoic Era, the Earth's surface was very different from what it is today. The continents were arranged differently, forming one large supercontinent called Pangea. This landmass was surrounded by a single large ocean called Panthalassa. The climate was much warmer and wetter than it is today, with no ice caps at the poles.

The first land plants, known as bryophytes, appeared during the early Silurian Period, around 430 million years ago. These plants were small and simple, lacking roots and vascular tissue. They grew in damp environments, such as along the edges of lakes and streams. They were important in the development of soils and in the colonization of land by other organisms, such as insects and other arthropods.

Answer:

question not clear can u rewrite

Answer:

B

Explanation:

living things are not required to move

Because its molecules can slide around each other, a liquid has the ability to flow. The resistance to such flow is called viscosity. For organic juices, as the chain increases the viscosity increases due to the bonding that is present.

Therefore, the ranking should be as follows:

Viscosity is the degree of a fluid's resistance to go with the flow. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the casual concept of "thickness": for instance, syrup has better viscosity than water.

Viscosity quantifies the internal frictional force among adjacent layers of fluid which are in relative movement. as an example, whilst a viscous liquid is compelled via a tube, it flows more quickly close to the tube's axis than close to its walls. Experiments display that some stress (along with a stress difference between the two ends of the tube) is needed to preserve the glide. that is due to the fact a pressure is needed to overcome the friction between the layers of the fluid that are in relative motion.

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Answer: In standard decimal notation, the speed of light is 299,800,000.0 meters per second. In scientific notation this is written as 2.998x108 meters per second, meaning that the true position of the decimal point is 8 digits to the right. In this case, that means filling in the empty spots with zeros.

Hope it helped

A chemical formula is a way of identifying a compound by placing all the elements present in the compound together using their acronyms

1.

A) Bi(NO3)3

B) NH4ClO3

C) Cl2O7

D) AlP

E) HClO

F) P2O5

Answer:

Percent Yield  =  65.57%

Explanation:

To find the percent yield, you need to
(1) convert grams Pb to moles (using the atomic mass of Pb), then
(2) convert moles Pb to moles PbO (using the mole-to-mole ratio from the balanced equation), then
(3) convert moles PbO to grams (using the molar mass of PbO), and then (4) calculate the percent yield.
It is important to arrange the conversions in a way that allows for the cancellation of units.

Steps 1 - 3

Atomic Mass (Pb): 207.20 g/mol

Molar Mass (PbO): 207.20 g/mol + 15.999 g/mol = 223.199 g/mol

2 Pb(s) + O₂(g) -----> 2 PbO(s)
^                                ^

451.4 g Pb          1 mole Pb            2 moles PbO             223.199 g
-----------------  x  --------------------  x  -----------------------  x  ----------------------  =
                             207.20 g             2 moles Pb             1 mole PbO

=   486.2 g PbO

Step 4

The actual yield is determined by running an experiment, whereas the theoretical yield is determined using stoichiometry and a balanced equation.

Actual Yield = 318.8 g PbO

Theoretical Yield = 486.2 g PbO

                                   actual yield
Percent Yield  =  ------------------------------  x  100%
                               theoretical yield

                               318.8 g PbO
Percent Yield  =  ------------------------  x  100%
                               486.2 g PbO

Percent Yield  =  65.57%

Answer:

3.50 mol x 6.022 x 10^23

= 2.11 x 10^24 carbon atoms

Explanation:

1. moles = grams/molar mass

2. (mass nitrogen/mass amm sulfide)*100 = ??

3. mass Hg = volume x density

Then convert to moles.

Then remember there are 6.022E23 atoms for every mole.

Answer:

Acids and bases can help neutralize each other.

Acids turn litmus paper red, bases turn it blue.

Strong bases can be slippery and slimy feeling.

Acids taste sour, bases taste bitter.

Proteins are made up of amino acids.

Vitamin C is also an acid called ascorbic acid.

Ammonia is a base chemical.

Explanation:

school

I just did this for my class.

Here are 10 facts about acids and bases to help you learn about acids, bases, and pH along with a chart for comparison.

1. Any aqueous (water-based) liquid can be classified as an acid, base, or neutral. Oils and other non-aqueous liquids are not acids or bases.

2. There are different definitions of acids and bases, but acids can accept an electron pair or donate a hydrogen ion or a proton in a chemical reaction, while bases can donate an electron pair or accept hydrogen or a proton.

3. Acids and bases are characterized as strong or weak. A strong acid or strong base completely dissociates into its ions in water. If the compound does not completely dissociate, it's a weak acid or base. How corrosive acid or a base does not relate to its strength.

4. The pH scale is a measure of the acidity or alkalinity (basicity) or a solution. The scale runs from 0 to 14, with acids having a pH less than 7, 7 being neutral, and bases having a pH higher than 7.

5. Acids and bases react with each other in what is called a neutralization reaction. The reaction produces salt and water and leaves the solution closer to a neutral pH than before.

6. One common test of whether an unknown is an acid or a base is to wet litmus paper with it. Litmus paper is a paper treated with an extract from a certain lichen that changes color according to pH. Acids turn litmus paper red, while bases turn litmus paper blue. A neutral chemical won't change the paper's color.

7. Because they separate into ions in water, both acids and bases conduct electricity.

8. While you can't tell whether a solution is an acid or a base by looking at it, taste and touch may be used to tell them apart. However, since both acids and bases can be corrosive, you shouldn't test chemicals by tasting or touching them! You can get a chemical burn from both acids and bases. Acids tend to taste sour and feel drying or astringent, while bases taste bitter and feel slippery or soapy. Examples of household acids and bases you can test are vinegar (weak acetic acid) and baking soda solution (diluted sodium bicarbonate -- a base).

9. Acids and bases are important in the human body. For example, the stomach secretes hydrochloric acid, HCl, to digest food. The pancreas secretes a fluid rich in the base bicarbonate to neutralize stomach acid before it reaches the small intestine.

10. Acids and bases react with metals. Acids release hydrogen gas when reacted with metals. Sometimes hydrogen gas is released when a base reacts with a metal, such as reacting sodium hydroxide (NaOH) and zinc. Another typical reaction between a base and a metal is a double displacement reaction, which may produce a precipitate metal hydroxide.

At equilibrium, the HI concentration is 2.92 mol/L.

For the process H2(g)+CO2(g)updownarrow H2O+CO. at 1660 °C, the equilibrium constant KP is 4. In a 5 liter flask, 0.8 moles each of H2 and CO2 are first injected. Reactions occur in the following order with relation to H2: 1. In experiments 1 and 2, the reaction rate doubles when the initial concentration of H2 is doubled while the initial concentration of Cl2 is held constant.

H2(g) + I2(g) ⇌ 2HI(g)

c = [HI]² / [H2][I2]

At the specified temperature, c = 53.3, hence the following can be written:

53.3 = [HI]^2 / (0.400 mol/L) × (0.400 mol/L)

or, [HI]² = 53.3 × 0.16

or, [HI]² = 8.528

or, [HI] = sqrt(8.528) mol/L

or, [HI] = 2.92 mol/L

As a result, 2.92 mol/L of HI are present at equilibrium.

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Answer:

The d-block and transition metal are not interchangeable terms because the d-block elements are a subset of the transition metal elements. The transition metals are defined as the elements that have partially filled d orbitals, which includes the d-block elements as well as other elements that have partially filled d orbitals in other blocks, such as lanthanides and actinides. Therefore, while all d-block elements are transition metals, not all transition metals are d-block elements.

Krypton, Chromium, and Oxygen with the following symbols Kr-13, Cr-2, and O-15 respectively have 23 electrons.

The atomic number of an atom determines the number of electrons it has. When the number of protons is equivalent to the number of electrons, the atom is electrically neutral. An anion, on the other hand, is an atom with a negative charge. It has gained an electron or two, or even more. Below are the chemical symbols for three different atoms or atomic anions with 23 electrons.Krypton:Kr has an atomic number of 36, indicating that it has 36 electrons. However, if we add 13 electrons to it, the total number of electrons becomes 49. Krypton with 13 additional electrons becomes Kr-13, with a total of 49 electrons.Chromium:Cr has an atomic number of 24, indicating that it has 24 electrons. Adding two more electrons to it, the total number of electrons becomes 26. The atomic anion with 26 electrons is Cr-2.Oxygen:Oxygen has an atomic number of 8, indicating that it has 8 electrons. However, if we add 15 electrons to it, the total number of electrons becomes 23. Oxygen with 15 additional electrons becomes O-15, with a total of 23 electrons.

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The isoelectric point (pI) is the pH at which an amino acid or protein.

Functional groups of amino acids in enzymes present have the ability to readily ionize. other amino acids which have ionizable side chains. These include arginine, aspartic acid, cysteine, glutamic acid, histidine, lysine and tyrosine.

There are basically four different classes of amino acids determined by different side chains: (1) non-polar and neutral, (2) polar and neutral, (3) acidic and polar, (4) basic and polar. Principles of Polarity: The greater the electronegativity difference between atoms in a bond, the more polar the bond.

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Answer: youz a dumah  

Explanation:  ah  big head ah  yo momma waz in my bed last night

The value of Kp for the given reaction at equilibrium is approximately 192,986.689 L atm mol⁻¹.

To calculate the equilibrium constant Kp for the given reaction, we can use the relationship between Kc and Kp, which is expressed as:

Kp = Kc * (RT)^Δn

Where:

- Kp is the equilibrium constant in terms of partial pressures.

- Kc is the equilibrium constant in terms of concentrations.

- R is the ideal gas constant (0.08206 L atm K⁻¹ mol⁻¹).

- T is the temperature in Kelvin.

- Δn is the change in the number of moles of gas (sum of products - sum of reactants).

In this case, the reaction involves four moles of gas on the left-hand side (reactants) and five moles of gas on the right-hand side (products). Therefore, Δn = 5 - 4 = 1.

Given that Kc = 2367 at 999 K, we can substitute these values into the equation:

Kp = 2367 * (0.08206 L atm K⁻¹ mol⁻¹ * 999 K)^1

Simplifying the expression:

Kp = 2367 * (81.367 L atm mol⁻¹)

Calculating the product:

Kp ≈ 192,986.689 L atm mol⁻¹

Therefore, the value of Kp for the given reaction at equilibrium is approximately 192,986.689 L atm mol⁻¹.

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Answer:

\(w/v\%=3.02\frac{g}{mL} \%\)

Explanation:

Hello,

In this case, we first define the formula for the calculation of weight/volume percentage considering cobalt (II) fluoride as the solute, water the solvent and the both of them as the solution:

\(w/v\%=\frac{mass_{solute}}{V_{solution}}*100\%\)

In such a way, since the mass of the solute is given as 6.04 g and the final volume of the solution 200 mL, the weight/volume percentage turns out:

\(w/v\%=\frac{6.04g}{200mL}*100\%\\\\w/v\%=3.02\frac{g}{mL} \%\)

Regards.

The number of faradays that passes through a resistance in a circuit carrying current of 5 A for 1hour is 0.187 Faraday.

The number of Faradays passing through an electrical circuit can be calculated using the following formula;

Q = It

Where:

According to this question, a circuit of electricity is carrying a current of 5A for 1 hour (3600s). The charge can be calculated as follows:

Q = 5 × 3600

Q = 18,000C

Since [1 F = 96500 C]

18,000C will be equivalent to 0.187 Faradays.

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Answer:

denser than freshwater due to the sodium chloride dissolved in it.

Explanation:

t. This means that a specific volume of salt water is heaver than the same volume of freshwater. ... While colder water is denser, when water freezes into ice, it becomes less dense and floats on the surface

The right brain part of the brain is affected by a smell, a song, or a photograph.

The right brain is more intuitive and visually oriented. It is occasionally referred to as the analog brain. It thinks less logically and with more creativity. According to out-of-date research by Sperry, the right brain aids in creativity.

Posterior parietal cortex of the parietal lobe of the brain mainly deals with the photographs.

The olfactory bulb, a structure in the front of the brain, processes smells before sending data to other regions of the body's central nervous system.

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The right brain part of the brain is affected by a smell, a song, or a photograph.

What is Right Brain?

The right brain is more intuitive and visually oriented. It is occasionally referred to as the analog brain. It thinks less logically and with more creativity. According to out-of-date research by Sperry, the right brain aids in creativity.

Which part of brain deals with photograph?

Posterior parietal cortex of the parietal lobe of the brain mainly deals with the photographs.

Which part of brain deals with Smell?

The olfactory bulb, a structure in the front of the brain, processes smells before sending data to other regions of the body's central nervous system.

Answer:

\(f=216s^{-1}=216Hz\)

Explanation:

Hello.

In this case, the relationship between wavelength, speed of light and frequency is:

\(\lambda=\frac{c }{f}\)

It means that solving for the frequency, we obtain:

\(f=c*\lambda\)

Thus, for the given 720-nm wavelength and the speed of light, the frequency is:

\(f=3.00x10^8\frac{m}{s}*720.0nm*\frac{1x10^{-9}m}{1nm}\\ \\f=216s^{-1}=216Hz\)

Best regards.

The frequency in hertz of the electromagnetic radiation is \(4.12 \times 10^{14}\) Hertz.

Given the following data:

Conversion:

1 nanometer = \(1 \times 10^{-9}\) meter

720 nanometer = \(7.2 \times 10^{-7}\) meter

To find the frequency in hertz of the electromagnetic radiation:

Mathematically, the frequency of an electromagnetic radiation is given by the formula:

\(Frequency = \frac{speed}{wavelength}\)

Substituting the given parameters into the formula, we have;

\(Frequency = \frac{3.00 \times 10^8}{7.2 \times 10^{-7}}\)

Frequency = \(4.12 \times 10^{14}\) Hertz

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Considering the phase diagram, the state of matter that exists in area B is gas.

The correct option is A.

A phase diagram is a graphical representation that shows the conditions of temperature and pressure at which different phases or states of a substance exist.

The axes of a phase diagram typically represent temperature (usually on the horizontal axis) and pressure (usually on the vertical axis). The diagram is divided into regions that correspond to different phases, and the lines separating these regions represent phase boundaries.

The point where three phase boundaries meet is known as the triple point, which represents the temperature and pressure at which all three phases can coexist in equilibrium.

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Substituting the given values, we have (0.5 L) / (220 + 273.15 K) = V₂ / (313.15 K).Solving for V₂, we get V₂ = (0.5 L) * (313.15 K) / (220 + 273.15 K).

Calculating this expression, the volume of the balloon when fully cooled by your refrigerator would be approximately 0.38 liters when rounded to two decimal places.To convert Celsius to Kelvin, we need to add 273.15 to the Celsius temperature. Therefore, the temperature inside your refrigerator of 40 degrees Celsius is equivalent to 313.15 Kelvin.Now, let's consider 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 gas constant, and T is the temperature in Kelvin.Since the number of moles and pressure remain constant, we can write  the equation as V₁/T₁ = V₂/T₂, where V₁ is the initial volume of the balloon, T₁ is the initial temperature, V₂ is the final volume, and T₂ is the final temperature.

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