100 points please help!

The hydroxide-ion concentration of the apple cider sample with a pH of 3.25 is approximately 1.78 × 10⁻¹¹ M.

To find the hydroxide-ion concentration of the apple cider sample with a pH of 3.25, we will follow these steps:

1. Use the pH value to find the hydronium-ion (H3O⁺) concentration using the pH formula: pH = -log₁₀[H3O⁺]
2. Calculate the hydroxide-ion (OH⁻) concentration using the ion product constant for water (Kw).

Step 1: Calculate the hydronium-ion concentration
pH = 3.25
To find the H3O⁺ concentration, rearrange the formula:
[H3O⁺] = 10^(-pH)
[H3O⁺] = 10⁽⁻³°²⁵⁾
[H3O⁺] ≈ 5.62 × 10⁻⁴M

Step 2: Calculate the hydroxide-ion concentration
The ion product constant for water (Kw) is 1.0 × 10⁻¹⁴ at 25°C.
Kw = [H3O⁺] × [OH⁻]

Rearrange the formula to solve for [OH⁻]:
[OH⁻] = Kw / [H3O⁺]

Now plug in the values:
[OH⁻] = (1.0 × 10⁻¹⁴) / (5.62 × 10⁻⁴)
[OH⁻] ≈ 1.78 × 10⁻¹¹ M

Know more about concentration - brainly.com/question/17206790

#SPJ11

Answer:

Explanation:

Here, we want to get the mass required to make the given volume

To get this we need to get the number of moles

To get the number of moles, we have to multiply the volume by the molarity

Mathematically, we have that as:

The volume can be converted to liters by dividing by 1000

So we have the volume as 311/1000 = 0.311 L

Thus, we have the number of moles as:

To get the mass, we have to multiply the number of moles by the molar mass

The molar mass of NaCl is 58.44 g/mol

Thus, we have the mass as:

\(LiNO_{3}\)There are 0.075 moles of \(LiNO_{3}\) in 250 mL of a 0.30 M solution.

To determine the number of moles of \(LiNO_{3}\) in 250 mL of a 0.30 M solution, we can use the formula:

moles of solute = concentration (M) x volume (L)

First, we need to convert the volume from milliliters (mL) to liters (L):

250 mL = 0.25 L

Next, we can substitute the given values into the formula:

moles of \(LiNO_{3}\) = 0.30 M x 0.25 L

moles of \(LiNO_{3}\) = 0.075 mol

Therefore, there are 0.075 moles of \(LiNO_{3}\) in 250 mL of a 0.30 M solution.

Learn more about moles, here:

https://brainly.com/question/15209553

#SPJ1

The concentration of Cl⁻ ions in a 0.1M solution of calcium chloride (CaCl2) is 0.2 M.

Calcium chloride (CaCl2) dissolves into three ions:

one Ca²⁺ ion and two Cl⁻ ions. So, in a 0.1M solution of CaCl2, we have the following concentrations:

1Ca²⁺= 0.1 and 2Cl⁻ = 0.2

Therefore, the concentration of Cl⁻ ions in a 0.1M solution of calcium chloride (CaCl2) is 0.2 M.

Learn more about Calcium chloride:

https://brainly.com/question/12216405

#SPJ11

The concentration of Cl- ions in a 0.1M solution of calcium chloride is 0.2M, as for each molecule of calcium chloride, there are two chloride ions present.

In chemistry, the concentration of ions in a solution is typically determined by the molarity of the compound and the stoichiometry of the ions in the compound.

For example, in the case of a 0.1M solution of calcium chloride (CaCl₂), there are two chloride (Cl-) ions for every molecule of calcium chloride.

Therefore, the concentration of Cl- ions in the solution would be double the molarity of the calcium chloride, or 0.2M.

https://brainly.com/question/31665413

#SPJ12

Answer:

Chemical bonding - a mutual adhesion of atoms in an molecule and the crystal lattice.

Explanation:

Answer:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

Answer:

C so it’s Temperature

Explanation:

They are clearly talking about temperature when they say -78 °C

The property of the gas did the chemist report is temperature.

The following information should be considered;

Learn more: https://brainly.com/question/24908711?referrer=searchResults

Answer: 215.0%

Explanation:

The volume of the second vessel is approximately 322.7 mL.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P₁ × V₁)/T₁ = (P₂ × V₂)/T₂

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

First, we need to convert the temperatures to Kelvin, which is done by adding 273.15 to the Celsius temperature:

T₁ = 40.0 + 273.15 = 313.15 K

T₂ = 0.0 + 273.15 = 273.15 K

Next, we can plug in the given values and solve for V₂:

(P₁ × V₁)/T₁ = (P₂ × V₂)/T₂

(895 torr × 550.0 mL)/313.15 K = (745 torr × V₂)/273.15 K

Simplifying and solving for V₂, we get:

V₂ = (745 torr × 550.0 mL × 313.15 K) / (895 torr × 273.15 K)

≈ 322.7 mL

To know more about combined gas law here

https://brainly.com/question/13154969

#SPJ4

20.927 g of mass of 4.0 L of oxygen at 4.0 ATM and 25 degrees celcius.

The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Volume of oxygen \(O_2\) would be 4 L.

Pressure (P) = 4.0 atm

Temperature (T) = 298 K

Universal gas constant (R) = 0.0821 L.atm/mol.K

Molecular mass of oxygen = 32 g/mol

Mass can be calculated by using the Ideal gas equation which is :

PV = nRT  (Ideal gas equation)

On rearranging the above formula we will get :

\(\frac{PV}{RT} = \frac{Mass}{Molar\;mass}\)

\(\frac{4.0 atm X 4 L}{0.0821 L.atm/mol.K X 298 K} = \frac{Mass}{Molar\;mass}\)

Mass = 20.927 g

Hence, 20.927 g of mass of 4.0 L of oxygen at 4.0 ATM and 25 degrees  celcius.

Learn more about the ideal gas equation here:

https://brainly.com/question/10807479

#SPJ1

Answer:

A. 2

Explanation:

You need to balance the other side so the reactants and products are equal.

The ground-state electron configurations of oxygen, sulfur, and selenium are 2-8-8, 2-8-6, and 2-8-8-6 respectively. Oxygen and selenium both have 8 electrons in their outermost shell, while sulfur has 6.

This difference affects the chemical and physical properties of these elements, as elements with more electrons in their outermost shells tend to be more reactive due to increased electron availability for bonding.

As oxygen and selenium have the same number of electrons in their outermost shell, they have similar chemical and physical properties. Sulfur, with its fewer outer shell electrons, has different chemical and physical properties than oxygen and selenium.

For more question on selenium click on

https://brainly.com/question/30094538

#SPJ11

Answer:

A

Explanation:

I believe it's A sorry if any part of my answer is wrong i tried my best to help you improve

Answer:

A. cutting a substance into four pieces

Explanation:

The others include burning, reacting, and rust which make up a chemical change.

Cutting a substance into four pieces indicates a physical change. The correct option is A.

Even before to and after a physical change, the material implicated is unique architectural the same.

Physical changes include texture, shape, heat, and the beginning of a change in the state of matter. The texture of a substance influences how it feels.

A physical change is simply a change in appearance. The situation has not changed since the change.

Physical change can be seen in the use of cutting paper, melting butter, dissolving salt in water, and breaking glass.

Chemical reaction takes place when bonds among molecules or atoms are broken or formed.

This implies that one material with a specific set of properties is transformed into another substance with a different set of properties.

Thus, the correct option is A.

For more details regarding chemical changes, visit:

https://brainly.com/question/23693316

#SPJ6

Answer:

H2SO4 + 2 LiOH → Li2SO4 + 2 H2O - Balanced equation | Chemical Equations online!

Answer:

1

Explanation

the lower the number the more acidic the solution

The most likely pH of a highly-corrosive acid is 1. Details about pH can be found below.

pH refers to measure of acidity or alkalinity of a substance. It also refers to the concentration of hydrogen ions in a compound.

The pH has a range of 1 - 14

Where;

The lower the pH, the more acidic the substance while the higher the pH, the more alkaline the substance.

This suggests that the most likely pH of a highly-corrosive acid is 1.

Learn more about pH at: https://brainly.com/question/15289741

#SPJ9

The process that would be directly affected by a substance that interrupts RNA polymerases is protein synthesis.

RNA polymerases are enzymes responsible for catalyzing the formation of RNA molecules from DNA templates during transcription. A substance that interrupts RNA polymerases would directly affect the transcription process, which is the synthesis of RNA from DNA.

Transcription is a fundamental process in gene expression, where information encoded in DNA is transferred to RNA for the synthesis of proteins.

Learn more about RNA polymerases at: https://brainly.com/question/10556531

#SPJ1

Answer:

The heat capacity is the amount of heat, expressed usually in Joules or calories, needed to change the system by 1 degree Celsius. The specific heat capacity is the amount of heat required to raise 1 gram of a substance by 1 degree Celsius.

Explanation:

For example, the specific heat of H2O(l) is 4.18 J/g ° C.

Answer:To calculate the concentration of the Fe(NO3)3 solution after dilution, we can use the formula:

Explanation:

C1V1 = C2V2

C1 = Initial concentration of the solution

V1 = Initial volume of the solution

C2 = Final concentration of the solution

V2 = Final volume of the solution

Initial concentration (C1) = 3.0 M

Initial volume (V1) = 80 mL

Final volume (V2) = 1500 mL

Using the formula, we can solve for C2:

C1V1 = C2V2

(3.0 M)(80 mL) = C2(1500 mL)

Rearranging the equation to solve for C2:

C2 = (C1V1) / V2

C2 = (3.0 M)(80 mL) / 1500 mL

C2 ≈ 0.16 M

Therefore, the concentration of the Fe(NO3)3 solution after dilution is approximately 0.16 M.

we have an initial solution of Fe(NO3)3 with a concentration of 3.0 M and a volume of 80 mL. The goal is to dilute this solution to a final volume of 1500 mL and determine the concentration of the diluted solution.

To do this, we can use the dilution formula: C1V1 = C2V2, where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume.

To know more about  visit:

https://brainly.com/question/14357466

#SPJ11

Answer:

d

Explanation:

The manufacture of drugs and treatments, as well as the research and development of novel drugs that can benefit people in various ways and treat a variety of ailments, diseases, and pains, are the primary functions of medicinal chemistry. The correct option is D.

Our basic needs of food, clothes, shelter, health, energy, and pure air, water, and soil are all met by chemistry. Chemical technologies improve our quality of life in many ways by offering fresh approaches to issues with health, resources, and energy use.

We can understand molecules as the fundamental components of everything thanks to chemistry. It also helps us understand the composition, structure, and properties of materials. It aids in the teaching of the Earth, food, materials, the human body, and energy to kids.

Thus the correct option is D.

To know more about chemistry, visit;

https://brainly.com/question/20513633

#SPJ6

The answer would be:

In2(SO4)3 (Also known as Indium Solfate).

Answer:

Simple distillation for salt and water

Explanation:

The molarity of the NaCl and \(MgSO_4\) will be the same.

A mole is defined as 6.02214076 × \(10^{23}\)of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

1 mol of NaCl in 1 litre of solution gives 1 M.

1 mol of \(MgSO_4\) in 1 litre of solution gives 1 M.

Hence, the molarity of the NaCl and \(MgSO_4\) will be the same.

Learn more about moles here:

https://brainly.com/question/8455949

#SPJ1

Answer:

A. Mechanical

Explanation:

Mechanical energy is the sum of an object's kinetic energy and potential energy, which are both energies of motion.

Answer:

Explanation:

It's water vapor. There is enough heat present to get the water to boil but not enough to break it into its chemical components (oxygen and hydrogen), so the answer is D.