What is the pH of a solution prepared by dissolving 0.1 x 10^-5 mol of solid NaOH in enough water to yield 1.0 L of solution?

Answer:

4366.8 grams or 4.4 kg

Explanation:

Density = Mass / Volume

Mass = Density x Volume

M = 6.7 x 6.8 x 4.3 x 22.29

M = 4366.8 g

Best Regards!

Answer:

   \(Hope this helps you\) A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus. \(Enjoy your day\)

Explanation:

Answer:

Atoms are the fundamental building blocks of all matter and are composed of protons, neutrons, and electrons. Because atoms are electrically neutral, the number of positively charged protons must be equal to the number of negatively charged electrons. Since neutrons do not affect the charge, the number of neutrons is not dependent on the number of protons and will vary even among atoms of the same element.

Explanation:

hope it helps

Answer:No

Explanation: Because without plants, animals would have no oxygen to breathe and would die. People also depend on plants for food. All animals eat either plants or plant-eating animals. Without plants there would be no food at all.

Answer:

See below

Explanation:

Conversion factor :  1 ft^3  = 28 .317  liters

$ 1.30 /( 17 ft^3 *  28.317 liters/ft^3)    =   $.0027  per liter  

16 fluid ounce bottle of witch hazel will have 66.24ml of ethyl alcohol.

volume percent of a solution is the ratio of the volume of a solute present in a solution to the volume of the solution as a whole.

Volume Percent  =  V solute(mL)/V solution(mL)  ×  100

Volume Percent  =  V solute(mL)/V solute(mL)+V solvent(mL)  ×  100

14% of 16 fluid ounce

=(14/100)×16

=0.14×16

=2.24 fluid ounce

=66.24ml

To know more about volume percentage in chemistry, visit:

https://brainly.com/question/12919537

#SPJ1

Answer:

IM VERY SORRY HAVE A GOOD DAY\\

Explanation:

Answer:

1.44 STABLE

Explanation:

Answer:The pressure exerted by the gas is 100kPa

Explanation:Let's apply the Charles Gay Lussac law, to solve the question.

At constant volume, the pressure varies proportionally with the temperature.

P initial / T° initial = P final / T° final

50kPa / 20°C = P final / 40°C

Temperature has increased the double, so the pressure will be increased, the double too.

100 kPa

If you need more help go to this link https://brainly.com/question/14378507

Answer:

an exothermic reaction

Explanation:

Ai. The car's initial kinetic energy is 22657.94 J

Aii. The car's initial potential energy is 939960.1 J

B. The car's final kinetic energy is 171420.38 J

C. The car's change in kinetic energy is 148762.44 J

Ai. How do I determine the car's initial kinetic energy?

We can obtain the initial kinetic energy of the car as illustrated below:

KE₁ = ½mu²

KE₁ = ½ × 566.99 × 8.94²

KE₁ = 22657.94 J

Aii. How do I determine the car's initial potential energy?

The car's initial potential energy can be obtained as shown below:

PE₁ = mgh

PE₁ = 566.99 × 9.8 × 169.164

PE₁ = 939960.1 J

B. How do I determine the car's final kinetic energy?

The final kinetic energy of the car can be obtained as illustrated below:

KE₂ = ½mv²

KE₂ = ½ × 566.99 × 24.59²

KE₂ = 171420.38 J

C. How do I determine the car's change in kinetic energy?

The change in the kinetic energy of the car can be obtained as follow:

ΔKE = KE₂ - KE₁

ΔKE = 171420.38 - 22657.94

ΔKE = 148762.44 J

Learn more about kinetic and potential energy:

https://brainly.com/question/7981774

https://brainly.com/question/22274239

#SPJ1

Answer:

Explanation:

a) For a first-order reaction, the rate of the reaction is proportional to the concentration of the reactant, i.e., rate = k[A]. The integrated rate law for a first-order reaction is given by:

ln([A]t/[A]0) = -kt

where [A]t is the concentration of the reactant at time t, [A]0 is the initial concentration, k is the rate constant, and t is time.

If a reaction is 50% complete in 30.0 min, it means that [A]t/[A]0 = 0.5. Substituting these values into the equation above, we can solve for the rate constant:

ln(0.5) = -k(30.0 min)

k = 0.0231 min^-1

Now, if the reaction is 75% complete, it means that [A]t/[A]0 = 0.25 (since 50% is half of the initial concentration and 75% is a quarter of the initial concentration). Substituting this value and the rate constant into the equation above, we can solve for the time t:

ln(0.25) = -0.0231 min^-1 * t

t = 61.3 min

Therefore, for a first-order reaction, the reaction will be 75% complete after 61.3 min.

b) For a zero-order reaction, the rate of the reaction is independent of the concentration of the reactant, i.e., rate = k. The integrated rate law for a zero-order reaction is given by:

[A]t = -kt + [A]0

where [A]t is the concentration of the reactant at time t, [A]0 is the initial concentration, k is the rate constant, and t is time.

If a reaction is 50% complete in 30.0 min, it means that [A]t = 0.5[A]0. Substituting these values into the equation above, we can solve for the rate constant:

0.5[A]0 = -k(30.0 min) + [A]0

k = 0.0167 M/min

Now, if the reaction is 75% complete, it means that [A]t = 0.25[A]0. Substituting this value and the rate constant into the equation above, we can solve for the time t:

0.25[A]0 = -0.0167 M/min * t + [A]0

t = 45.0 min

Therefore, for a zero-order reaction, the reaction will be 75% complete after 45.0 min.

Answer:

When vinegar and baking soda are combined a mixture is produced which is carbon dioxide. A gas is released.

Explanation:

The two functional groups that the aminoacid has according to the picture are amine and carboxyl.

In chemistry and related areas, a functional group can be defined as a group of atoms bonded in a specific molecule that can affect the was the molecule reacts or the specific behavior of it.

In the case of the molecule presented, which is an amino acid, two functional groups can be identified:

Learn more about functional groups in https://brainly.com/question/1356508

#SPJ1

Answer:

Zinc sulfide- more soluble in 0.10 M hydrochloric acid solution

Silver chloride- less soluble in 0.10 M hydrochloric acid solution

Lead iodide- same solubility in 0.10 M hydrochloric acid solution as in pure water

Silver hydroxide- same solubility in 0.10 M hydrochloric acid solution as in pure water

Explanation:

Solubility refers to the amount of a substance that dissolves in 1 dm^3 of solvent. Several factors influence the dissolution of solutes in a given solvent. Some substances dissolves at a low pH (in acid solutions) while other dissolve at a low pH (in basic solutions).

For Silver chloride, its solubility decreases in 0.10 M hydrochloric acid solution because of common ion effect when compared to its solubility in pure water.

The quantity of heat required to convert the ice to water is 5048.4 J.

The quantity of heat required to convert the ice to water is calculated as follows;

Q = n∆Hfus

where;

The number of moles of the ice is calculated as follows;

n = m/M

where;

M is molar mass of water (H2O) = 18 g/mol

n = 15.1/18

n = 0.84 mole

Q = 0.84 x 6.01 x 10³

Q = 5048.4 J

Thus, the quantity of heat required to convert the ice to water is 5048.4 J.

Learn more about quantity of heat here: https://brainly.com/question/13439286

Answer:

A. [OH⁻] = 2.188x10⁻³M

B. pKb = 6.02

Explanation:

When hydrazine is in equilbrium with water, its reaction is:

N₂H₄(aq) + H₂O(l) ⇄ HN₂H₄⁺(aq) + OH⁻(aq)

Where Kb, is defined as the ratio between concentrations in equilibrium of the species, thus:

Kb = [HN₂H₄⁺] [OH⁻] / [N₂H₄]

A. From pH, you can find [OH⁻], thus:

pH = -log [H⁺]

11.34 = -log [H⁺]

4.57x10⁻¹² = [H⁺]

As 1x10⁻¹⁴ = [OH⁻] [H⁺]

1x10⁻¹⁴ / 4.57x10⁻¹² = [OH⁻]

B. Concentrations in equilibrium of the species are:

[N₂H₄] = 5.0M - X

[HN₂H₄⁺] = X

[OH⁻] = X

Where X is reaction coordinate

As [OH⁻] = 2.188x10⁻³M

X = 2.188x10⁻³M

Replacing:

[N₂H₄] = 5.0M - 2.188x10⁻³M = 4.9978M

[HN₂H₄⁺] = 2.188x10⁻³M

[OH⁻] = 2.188x10⁻³M

Replacing in Kb expression:

Kb = [HN₂H₄⁺] [OH⁻] / [N₂H₄]

Kb = [2.188x10⁻³M] [2.188x10⁻³M] / [4.9978M]

Kb = 9.577x10⁻⁷

pKb is defined as -log Kb

pKb = -log 9.577x10⁻⁷

HAZWOPER training and certification recognize:

The correct option is both A and C

HAZWOPER (Hazardous Waste Operations and Emergency Response) training and certification recognize that a large number of victims (as much as 80%) in hazardous waste incidents or emergencies will self-present or be self-referred for medical treatment.

Additionally, HAZWOPER training acknowledges that victims may use any entrance they can access at a hospital, not just the emergency department entrance.

This is because individuals affected by hazardous materials may arrive at different areas of the hospital seeking medical assistance.

Therefore, option d. Both A and C are correct statements regarding the recognition of HAZWOPER training and certification.

Learn more about HAZWOPER at: https://brainly.com/question/31561828

#SPJ1

Answer:

Density, melting point. and magnetic properties  

Explanation:

I can think of three ways.

1. Density

The density of Cu₂S is 5.6 g/cm³; that of CuS is 4.76 g/cm³.

It should be possible to distinguish these even with high school equipment.

2. Melting point

Cu₂S melts at 1130 °C (yellowish-red); CuS decomposes at 500 °C (faint red).

A Bunsen burner can easily reach these temperatures.

3. Magnetic properties

You can use a Gouy balance to measure the magnetic susceptibilities.

In Cu₂S the Cu⁺ ion has a d¹⁰ electron configuration, so all the electrons are paired and the solid is diamagnetic.

In CuS the Cu²⁺ ion has a d⁹ electron configuration, so all there is an unpaired electron and the solid is paramagnetic.

A sample of Cu₂S will be repelled by the magnetic field and show a decrease in weight.

A sample of CuS will be attracted by the magnetic field and show an increase in weight.

In the picture below, you can see the sample partially suspended between the poles of an electromagnet.

Option (a) is correct, ∆H < 0, ∆S < 0, ∆G < 0, sets of conditions is true for an exothermic reaction that is spontaneous at all temperatures.

An exothermic reaction that is spontaneous at all temperatures must satisfy the following criteria:

∆H < 0 (negative change in enthalpy, indicating that heat is being released)

∆S < 0 (negative change in entropy, indicating that the system is becoming more ordered)

∆G < 0 (negative change in Gibbs free energy, indicating that the reaction is spontaneous)

Based on these criteria, the correct set of conditions is:

∆H < 0 , ∆S < 0 , ∆G < 0

In other words, for an exothermic reaction to be spontaneous at all temperatures, it must release heat, increase order, and have a negative Gibbs free energy change. This indicates that the reaction can occur without any input of energy, and will naturally proceed in the direction of lower free energy.

To know more about reaction please refer: https://brainly.com/question/4482869

#SPJ4

Question - Which of the following sets of conditions is true for an exothermic reaction that is spontaneous at all temperatures? Choose the correct option among the following.

(a) ∆H < 0 , ∆S < 0 , ∆G < 0

(b) ∆H > 0 , ∆S < 0 , ∆G < 0

(c) ∆H < 0 , ∆S < 0 , ∆G > 0

(d) ∆H > 0 , ∆S < 0 , ∆G < 0

(e) ∆H < 0 , ∆S > 0 , ∆G < 0

OH- ions is your answer.

don't forget to mark me the brainliest

Answer:

Conservation of mass occur when your chemical equation is balanced.

So let's see if it is balanced:

6CO₂ + 6H₂O ------> C₆H₁₂O₆ + O₂

You need to have the same quantity of atoms of each element on the product side and reactant side.

Reactant side: 6CO₂ + 6H₂O

Product side: C₆H₁₂O₆ + O₂

Answer:

positive and negative

Explanation:

ik its prob not helpful now but ye sorry no ones answered lol

The phrase related to electromagnetism which can applied only to electric force is positive and negative. The two charges are forming electric force. Whereas, the two poles are forming the magnetic field.

Electromagnetism is the magnetic field generated by an electric field. The strength of each field is directly proportional to the each other. The magnetic field lines are perpendicular to the electric field lines.

The electric force is generated by two charges positive charge and negative charges. The like charges will repels and unlike charges will attracts each other.

Similarly magnetic south and north poles, generates magnetic filed. The two like poles will repel each other and unlike poles will attracts each other. Hence, the negative and positive terms are related to the electric force.

Find more on electric force:

https://brainly.com/question/29141236

#SPJ2

Explanation:

Correct option is

B

0.750 M

Na3PO4 dissociates as:

Na3PO4⇌3Na++PO43−

∴ conc. of Na+ would be =3×0.250=

hope help

Answer:

Mass = 90.28 g

Explanation:

Given data:

Mass of Ca(OH)₂ = ?

Volume of solution= 1.5 L

Molarity of solution = 0.81 M

Solution:

First of all we will calculate number of moles.

Molarity = number of moles / volume in L

by putting values,

0.81 M = Number of moles / 1.5 L

Number of moles = 0.81 M × 1.5 L

Number of moles = 1.22 mol

Mass of Ca(OH)₂ in gram:

Mass = number of moles × molar mass

Mass = 1.22 mol × 74.09 g/mol

Mass = 90.28 g

Answer:

Al(s) 28.3

Explanation:

Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion.

Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion.4Al(s) + 3O2(g) ? Al2O3(s)

AnswerAluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion.

4Al(s) + 3O2(g) ? 2Al2O3(s)

Using the thermodynamic data provided below, calculate S° for this reaction.

S°(J/K.mol)

Al(s) 28.3

O2(g) 205.0

Al2O3(s) 50.99

2. Aluminum forms a layer of aluminum oxide when exposed to air which protects the bulk metal from further corrosion.

4Al(s) + 3O2(g) ? Al2O3(s)

Calculate G° for this reaction, given that ?G°f of aluminum oxide is –1576.4 kJ/mol.

Answer:

Explanation:

Explanation:

it's helpful

you can try this answer

At 2861 degree Celsius the iron begins to boil. At 1,538 °C the substance begins to melt.

The melting point is the point at which the liquid and solid forms of a solid can exist in equilibrium. It can also be defined as the point at which a solid changes into a liquid under normal atmospheric pressure.

The equilibrium point at which water vapor, liquid water, and solid ice can exist in equilibrium is the only point at which the pressure and temperature of water vapor are the same. The equilibrium point of water vapor is the point at which the partial vapor pressure is the same as that of liquid water at the exact temperature of 273.1600 K.

To learn more about iron, refer to the link:

https://brainly.com/question/31984794

#SPJ1