If you were to use Lewis theory to predict the formula for the compound between potassium and sulfur, it would most likely be which of the following?
A. KS3
B. K2S
C. KS
D. KS2
E. none of the above

After considering the given data we conclude that the molar solubility is 4.4 x 10⁻⁶ M, under the condition that the solution contains 0.20 M HCL.

Copper(II) chloride is reffered as an anhydrous, brown solid copper salt which is soluble in water and gives a brownish aqueous solution when concentrated.  It forms complexes with halide ions, for instance forming H3O⁺ CuCl2⁻ in concentrated hydrochloric acid.

The solubility product constant (Ksp) of copper(II) chloride is 1.9 x 10⁻⁷
The molar solubility of copper(II) chloride in 0.20 M HCl can be evaluated applying the following formula:
\(Ksp = [Cu2^+][Cl^-]^2\)

Here,
[Cu²⁺] = concentration of Cu²⁺ ions
[Cl⁻] = concentration of Cl⁻ ions.
Let us consider x to be the molar solubility of copper(II) chloride in 0.20 M HCl.
Then [Cu²⁺] = x and [Cl⁻] = 0.20 M.
Staging these values into the Ksp expression gives:
1.9 x 10⁻⁷ = x(0.20)²
Evaluating for x gives:
x = 4.4 x 10⁻⁶ M

Hence , the molar solubility of copper(II) chloride in 0.20 M HCl is 4.4 x 10⁻⁶ M
To learn more about molar solubility
https://brainly.com/question/30298910
#SPJ4

Answer:

you can simply answer vl\t1=v2/t2

Answer:

The 2s and 3p orbitals would have more nodes than 1s and 2p orbitals.

p orbitals would have  same shape, but 3p would be larger

s orbitals would have same shape, but 2s would be larger

Explanation:

The basicity of the acid is equal to the number of moles of NaOH that reacted with one mole of acid. Since we know that 0.00025 moles of NaOH reacted with 0.01873 moles of acid.

What is Neutralization?

Neutralization is a chemical reaction that occurs when an acid and a base react with each other to form a salt and water. In this reaction, the hydrogen ions (H+) from the acid combine with the hydroxide ions (OH-) from the base to form water (H2O), and the remaining ions combine to form a salt. The resulting solution will have a pH that is closer to neutral (pH 7) than either the original acid or base.

First, let's calculate the number of moles of NaOH used in the reaction:

10 mL NaOH x (1 L / 1000 mL) x (1/2) x (1 mol NaOH / 20 mL N/2 HCl) = 0.00025 mol NaOH

Since the acid and NaOH react in a 1:1 ratio, this means that there were also 0.00025 moles of acid used in the reaction.

Next, we can use the mass of the acid and its molecular weight to calculate the number of moles of acid:

2.362 g acid x (1 mol acid / 126 g acid) = 0.01873 mol acid

Since the acid and NaOH react in a 1:1 ratio, we know that there were 0.01873 moles of NaOH used in the reaction.

After the reaction, the solution was diluted to a total volume of 250 mL. This means that the concentration of the acid in the diluted solution is:

0.01873 mol / 0.25 L = 0.07492 M

Finally, we can use the information about the neutralization of the diluted solution to calculate the basicity of the acid:

10 mL diluted solution x (1 L / 1000 mL) x (1/10) x (1 mol acid / 1 mol H+) = 0.001 mol acid

This means that the 10 mL of diluted solution contained 0.001 moles of acid. Since the concentration of the diluted solution is 0.07492 M, the volume of the 10 mL of diluted solution contains:

0.001 mol / 0.07492 mol/L = 0.01335 L = 13.35 mL

This means that the 10 mL of diluted solution contains 13.35 mL of the original acid solution. Since the original acid solution was diluted from 50 mL to 250 mL, this means that the 13.35 mL of the original acid solution corresponds to:

13.35 mL x (50 mL / 250 mL) = 2.67 mL of the original acid solution

Therefore, the 2.67 mL of the original acid solution contained 0.001 moles of acid, which corresponds to a concentration of:

0.001 mol / 0.00267 L = 0.3745 M

The basicity of the acid is equal to the number of moles of NaOH that reacted with one mole of acid. Since we know that 0.00025 moles of NaOH reacted with 0.01873 moles of acid, the basicity of the acid is:

0.00025 mol NaOH / 0.01873 mol acid = 0.01336

Therefore, the basicity of the acid is 0.01336.

Learn more about  Neutralization from given link

https://brainly.com/question/23008798

#SPJ1

Answer:

Thomson--atoms cotain electron

Ernest Rutherford--atoms have a positive nucleus

R.A Millikan--electrons have Q=-1

Dalton--atoms are indivisible

Millikan---> Electrons have a charge of -1

Rutherford ---> Atoms have a positive nucleus

Thomson -----> Atoms contain electrons

Dalton --------> Atoms are indivisible

The atomic theory went through several modifications and different scientists proposed various models of the atom until our present conception of the atom was developed.

The atom was first defined as the smallest indivisible particle of a substance. This idea of "indivisibility" of the atom stems from Dalton's theory.

The fact that atoms were composed of negatively charged electrons was proven by the experiments of J.J Thompson using the cathode ray tube. Millikan's charge to mass experiment showed that the electron has a charge of -1.

Rutherford, in his famous gold foil experiment showed that atoms were composed of a positively charged nucleus.

Learn more: https://brainly.com/question/1596638

Answer:

Land and sea breeze

Explanation:

This uneven warming of the land during the day results in the phenomenon called land and sea breeze.

Cola-flavored soda: 2. 6 -Acidic

cranberry juice: 2. 9  -Acidic

dish soap: 7. 3  -Basic

pickle juice: 5. 5  -Acidic

seawater: 8. 0 -Basic

lye soap: 13. 0. -Basic

pH value tells us about the acidity and basicity of any solution. pH means potential hydrogen.

The pH scale is counted from 0 to 14 in which 7 is neutral and the value of pure water.

Below 7 are all acids and the above 7 are all basic.

Thus, all acidic substances are Cola-flavored soda: 2. 6, pickle juice: 5. 5, cranberry juice: 2. 9.

Learn more about pH, here:

https://brainly.com/question/491373

Explanation:

2Al (s) aluminium + 6 HCl (l)

hydrochloric acid..

alcl3 (s) aluminium chloride + 3h² (g) hydrogen.

Explanation:

pH = 14 - pOH

= 14 - 4.91

= 9.09

The equilibrium constant of a reaction, represented by the symbol K, is a measure of the extent to which a reaction proceeds to form products at a given temperature. The correct answer is B.

It is calculated as the ratio of the concentrations (or partial pressures) of the products to the concentrations (or partial pressures) of the reactants, each raised to the power of its stoichiometric coefficient in the balanced chemical equation. The value of K is not necessarily less than 1, and it is not represented by the symbol H. However, option B is correct, as the value of K depends on the temperature at which the reaction occurs.

To know more about equilibrium, here

brainly.com/question/30807709

#SPJ1

Answer:

galing ah spanish kami pinoy

Answer:

here :). hope this helps.

Answer: Explanation:

Water wheels have several important parts that work together (see diagram).

*Flowing water (delivered via a channel called a mill race)

*Large wooden or metal wheels.

*Paddles or buckets (arranged evenly around the wheel)

*Axle.

*Belts or gears.

The total time required for the decay is approximately 1416.0 hours, which is closest to the given option C. 1006.9 hours.

Option (C) is correct.

To calculate the number of half-lives required for the decay. The half-life of 140 Ba is given as 283.2 hours.

First, we calculate the fraction of the original amount remaining after each half-life. Since the half-life represents the time it takes for half of the substance to decay, the fraction remaining after each half-life is 1/2.

To find the number of half-lives required to decay from 35 mg to 1.0 mg, we can set up the following equation:

(35 mg) * (1/2)ⁿ = 1.0 mg

Where 'n' is the number of half-lives.

Now, let's solve for 'n':

(1/2)ⁿ = 1.0 mg / 35 mg

(1/2)ⁿ = 0.02857

To find 'n', we can take the logarithm (base 1/2) of both sides:

n = log base 1/2 (0.02857)

Using the logarithmic property, we know that log base a (b) = log base c (b) / log base c (a):

n = log (0.02857) / log (1/2)

Using a calculator, we can find:

n ≈ 4.243

Since 'n' represents the number of half-lives, and we usually round up to the nearest whole number for half-life calculations, we get:

n ≈ 5

Therefore, it would take approximately 5 half-lives for the 35 mg sample of 140 Ba to decay to 1.0 mg.

To calculate the total time required, we multiply the half-life by the number of half-lives:

Total time = 283.2 hours * 5

Total time ≈ 1416 hours

Rounding to one decimal place, the total time required for the decay is approximately 1416.0 hours, which is closest to the given option C. 1006.9 hours.

To learn more about  half-lives  here

https://brainly.com/question/30599798

#SPJ4

Answer:

Mass = 208.26 g

Explanation:

Given data:

Volume of water = 40.0 mL

Volume of water + copper = 63.4 mL

Volume of copper = ?

Density of copper = 8.9 g/cm³

Mass of copper = ?

Solution:

Volume of copper:

Volume of copper = (Volume of water + copper ) - Volume of water

Volume of copper =  63.4 mL -  40.0 mL

Volume of copper = 23.4 mL

Mass of copper:

density = mass/volume

8.9 g/cm³ = mass/23.4 mL

 cm³ = mL

Mass = 8.9 g/mL × 23.4 mL

Mass = 208.26 g

The oxidation numbers of each of the elements in the following reactions and identify which of them are oxidized and reduced is manganese is oxidized and oxygen is reduced.

The reaction is given as :

`2MnCO₃  +  O₂   ----->  2MnO₂   +  2CO₂

in reactant side oxidation number of Mn = +2, C = +4 , O = -2

in reactant side oxidation number of O in O₂ = 0

in product side oxidation number of Mn = + 4 , O = -2

in product side oxidation number in CO₂ , C = +4 , O = -2

so the increase in oxidation number is oxidation and the decrease in oxidation number is reduction.

Thus, The oxidation numbers of each of the elements in the following reactions and identify which of them are oxidized and reduced is manganese is oxidized and oxygen is reduced.

To learn more about oxidation number here

https://brainly.com/question/29100691

#SPJ4

Answer: Atom/element

Explanation: Since matter cannot be created or destroyed, the number of atoms has to be equal on both sides of the equation.

Explanation:

this is the reason why aluminium's boiling point is higher than that of sodium. sodium forms Na+ ions, therefore 1 electron is lost from each sodium atom, whereas aluminium forms Al3+ ions, so 3 electrons are lost for each Aluminum atom. The number of delocalised electrons therefore increases from sodium to aluminium, and charge density of the ions increases as the ionic charge increases and size decreases.

Answer:

C2H4O2

Explanation:

In this molecule two carbon molecule , four hydrogen molecules and two oxygen molecules are present . So C₂H₄O₂ is the correct molecular formula of this structure. Option B is correct.

The molecular formula defines the number of atoms of each element in one molecule of a compound. It shows the actual number of each atom in a molecule.

An empirical formula represents the simplest whole-number ratio of various atoms present in a compound. The molecular formula shows the exact number of different types of atoms present in a molecule of a compound.

In this structure there are 2 carbon molecules, 4 hydrogen molecules and 2 oxygen molecules are present.

Hence , the option B is correct . The molecular formula of this structure is C₂H₄O₂.

To learn more about molecular formula refer the link below;

https://brainly.com/question/14425592

#SPJ2

Answer:Answer to: A function f is defined on the interval ~[0,4], and its derivative is { e^{sinx} - 2cos3x } a. on what interval is f increasing? b....

Missing

Explanation:

3. Environmental chemistry

4. Biochemistry

5. Inorganic Chemistry

6. Organic chemistry

The change that wilL occur is that the the reaction shifts to the right (products) to produce fewer moles of gas.

option C is correct.

The balanced equation is:

\(51.8 kJ + H_2(g) + 12(g) = 2HI(g)\)

From the left, there are 1 mole of H2 gas and 1 mole of I2 gas, which gives a total of 2 moles of gas.

In the right,  there are 2 moles of HI gas.

We can tell that there are more moles of gas on the left side than on the right side by comparing the amount of moles on each side.

According to Le Chatelier's principle, a decrease in volume will favor the side with fewer moles of gas.

In our scenario, the reaction will shift to the right  to produce fewer moles of gas.

Learn more about the Le Chatelier's principle at:

https://brainly.com/question/2943338

#SPJ1

Answer:

there is no change

Explanation:

acellus correct

Diluting 100.0 ml of an 8.0 M sugar water solution to a total volume of 600.0 ml results in a final molarity of approximately 1.33 M.

To calculate the molarity of the resulting sugar water solution after dilution, we can use the formula:

M1V1 = M2V2

where M1 and V1 represent the initial molarity and volume, and M2 and V2 represent the final molarity and volume.

In this case, the initial volume (V1) is 100.0 ml, and the initial molarity (M1) is 8.0 M. The final volume (V2) is 600.0 ml, and we need to determine the final molarity (M2).

Rearranging the equation, we have:

M2 = (M1 * V1) / V2

Plugging in the values, we get:

M2 = (8.0 M * 100.0 ml) / 600.0 ml

Simplifying the equation, we find:

M2 ≈ 1.33 M

Therefore, the resulting molarity of the sugar water solution after diluting 100.0 ml of an 8.0 M solution to a total volume of 600.0 ml is approximately 1.33 M.

To learn more about molarity  click here: brainly.com/question/31545539 #SPJ11

The reason why this small change between Neon and sodium cause a very big effect is simply because neon is a noble gas with an octet structure in its electronic configuration while sodium is an alkali metal which is univalent electropositive element.

However, despite the fact that these two different elements has a difference of one electron in their outermost shell, yet they individually carry and posses very powerful electronic structure due to their position in the periodic table which makes them react differently

An element can simply be a chemical substance which cannot be split into simpler forms by an ordinary chemical process.

Consider the following differences between Neon and sodium in the periodic table:

So therefore, the reason why this small change between Neon and sodium cause a very big effect is simply because neon is a noble gas with an octet structure in its electronic configuration while sodium is an alkali metal which is univalent electropositive element.

Learn more chemical elements:

https://brainly.com/question/6258301

#SPJ1

According to the balanced chemical equation, it takes 1 mole of Ba(OH)₂ to neutralize 2 moles of HBr.

2 HBr + Ba(OH)₂ → BaBr₂ + 2 H₂O

From the balanced equation, we can see that the stoichiometric ratio between HBr and Ba(OH)₂ is 2:1.

Let's calculate the volume of Ba(OH)₂:

Molarity of HBr = 2.709 M

Volume of HBr = 98.8 ml = 0.0988 L

Molarity of Ba(OH)₂ = 0.7 M

Volume of Ba(OH)₂ = ?

Using the stoichiometric ratio, we have:

(2.709 M) × (0.0988 L) = (0.7 M) × (Volume of Ba(OH)₂) × 2

Volume of Ba(OH)₂ = (2.709 M × 0.0988 L) / (0.7 M × 2)

Volume of Ba(OH)₂ ≈ 0.1959 L

≈ 195.9 ml (rounded to 1 decimal place)

Therefore, approximately 195.9 ml of 0.7 M barium hydroxide would be required to neutralize 98.8 ml of 2.709 M hydrobromic acid.

Learn more about neutralization reaction, here:

https://brainly.com/question/27745033

#SPJ4

To determine the miscibilities of the six solutions, gather information about the solutes and solvents to classify them as polar or non-polar. Perform a preliminary test by mixing small amounts of each solution with water to identify polar and non-polar groups based on the formation of homogeneous or heterogeneous mixtures. Confirm the classification by conducting further tests with appropriate solvents to observe the formation of homogeneous mixtures.

To determine the miscibilities of the six solutions and classify them into polar and non-polar groups, it is essential to analyze the chemical nature of the solutes and solvents involved. Polar solutes generally dissolve well in polar solvents, such as water, due to their ability to form hydrogen bonds and interact with the dipole moments of the solvent molecules. On the other hand, non-polar solutes tend to dissolve better in non-polar solvents, such as hexane or benzene, as they lack the necessary polarity for strong interactions with polar solvents.

To begin the procedure, gather information about the solutes and solvents used in each solution. Identify the functional groups or chemical structures present in the solutes to determine their polar or non-polar nature. For instance, compounds with hydroxyl (-OH) or amino (-NH2) groups are typically polar, while hydrocarbons or alkyl groups are non-polar.

Next, perform a preliminary miscibility test by mixing small amounts of each solution with water. Observe the formation of a homogeneous or heterogeneous mixture. Solutions that readily mix with water to form a uniform solution are likely polar in nature. Conversely, solutions that separate into distinct layers or show limited solubility in water are indicative of non-polar characteristics.

To confirm the miscibility classification, additional tests can be conducted using appropriate solvents. For polar solvents, such as ethanol or acetone, the polar solutions should mix well, while the non-polar solutions may show limited or no solubility. Conversely, non-polar solvents like hexane or toluene should readily dissolve non-polar solutions, while polar solutions may exhibit poor solubility.

By following this procedure, one can determine the miscibilities of the six solutions and categorize them into polar and non-polar groups based on their interactions with water and other suitable solvents.

Learn more about mass here:

brainly.com/question/11954533?

#SPJ11

Answer:

227 pm

Explanation:

Beneath that (about 170 kilometers, or 106 miles, beneath the troposphere) lies the second deck product of ammonium hydrosulphide clouds. And below that, where temperatures are a balmy 32° F (zero° C), is the lowest deck wherein you'll discover clouds of water.

Temperature is a measure of the common kinetic electricity of the particles in a device. which means that temperature is associated with the motion of atoms, molecules, and different particles that make up count number. Temperature is normally measured in stages Celsius (°C) or Fahrenheit (°F), despite the fact that the Kelvin (ok) scale is likewise typically utilized in clinical packages.

Temperature plays a essential function in lots of chemical reactions and strategies. for instance, growing the temperature of a response can frequently accelerate the fee at which it takes place, as the increased strength of the debris allows them to collide more frequently and with more pressure. additionally, the temperature can have an effect on the solubility of substances in solvents, as well as the vapor pressure and boiling factor of drinks.

To learn more about Temperature visit here:

brainly.com/question/11464844

#SPJ4

Answer:

it would be 25% sorry if I'm wrong

A marble statue placed on a square pedestal with 2.30 m-long side lengths produces 652 Pa (about) of pressure on the ground. The statue and pedestal weigh 3450 N altogether.

Given:

Weight in total: 3,450 N

Side length: 2.3 metres

Find:\sPressure

Computation:

Side by Side = Area of Statute

Statutory area equals 2.3 by 2.3

Statute area: 5.29 m2.

Weight x Area Equals Pressure

Pressure equals 3,450 / 5.29

Pressure equals 652 Pa (Approx)

The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure (symbol: p or P).

445 The pressure relative to the surrounding air is known as gauge pressure, often written gauge pressure[a].

Pressure is expressed using a variety of units. The SI unit of pressure, the pascal (Pa), for instance, is equal to one newton per square metre (N/m2). Similarly, the pound-force per square inch (psi,) is equal to one newton per square inch (N/in2).

Learn more about Pressure here:

https://brainly.com/question/21167921

#SPJ4