What is the ph of a 0.01 m solution of the strong acid hno3 in water?

Answers

Answer 1

The pH of a 0.01 M solution of the strong acid [tex]HNO\(_3\)[/tex] in water is 2.

To determine the pH of a strong acid solution, we can use the fact that strong acids completely dissociate in water. This means that for a 0.01 M solution of [tex]HNO\(_3\)[/tex], all of the [tex]HNO\(_3\)[/tex] molecules dissociate into H⁺ ions and [tex]NO\(_3\)\(^-\)[/tex] ions. Therefore, the concentration of H⁺ ions in the solution is equal to the concentration of the [tex]HNO\(_3\)[/tex] solution, which is 0.01 M.

The pH of a solution is defined as the negative logarithm (base 10) of the hydrogen ion concentration [H⁺]:

[tex]\[ \text{pH} = -\log_{10} [\text{H}^+] \][/tex]

Substituting the concentration of H⁺ ions into the equation gives:

[tex]\[ \text{pH} = -\log_{10} (0.01) \] \[ \text{pH} = -\log_{10} (10^{-2}) \] \[ \text{pH} = -(-2) \] \[ \text{pH} = 2 \][/tex]

Thus, the pH of a 0.01 M [tex]HNO\(_3\)[/tex] solution is 2.

Related Questions

How many nad+ are reduced in the β-oxidation of stearoyl-coa to form nine molecules of acetyl-coa?

Answers

The answer should be 8

Why will oil and water never mix second law of thermodynamics?

Answers

The second law of thermodynamics states that the total entropy can never decrease over time for an isolated system, that is , a system in which neither energy nor matter can enter nor leave.

( pls help me) brainlest answer too

4.) Heat is transferred through a piece of metal by _____.

conduction
convection
radiation

5.) Heat from the sun travels to earth by _____.

conduction
convection
radiation

6.) Energy in a vacuum travels by ___.

conduction
convection
radiation

7.) In a convection current _____.

A.) warm fluid sinks to replace cool fluid

B.)warm fluid is more dense, and therefore, rises

C.)cool fluid is more dense, and therefore, sinks

D.)heat flows from cooler areas to warmer areas

8.) Nuclear reactions occurring in the Sun _____. Select all that apply.

generate light
generate heat
absorb a lot of energy
fuse atoms of hydrogen to make helium atoms

9.) Which of the following statements is true?

A.) Temperature is an average measure of the heat energy in a substance.

B.)The transfer of heat in a fluid does not require physical contact between molecules.

C.)The sun's energy comes from the nuclear reactions of changing hydrogen into helium.

D.)All of the above.ω∵

Answers

4.) Heat is transferred through a piece of metal by _____.
conduction

Conduction happens when both items are in close contact. In a piece of metal. In this case, the heat transfers gradually into the other ends of the object. This makes the transfer rate is slow on a long object with a low surface area.

5.) Heat from the sun travels to earth by _____.
radiation

Sun energy comes from a reaction that will produce a light and heat and it is transferred to the earth by radiation. While conduction and convection need contact with the object, radiation doesn't. Radiation can travels a very long distance, that is why the heat could be delivered to the earth.

6.) Energy in a vacuum travels by ___.
radiation

One of the examples for energy travels in a vacuum would be sunlight. Sun and earth are separated by vacuum space which means there is no direct contact between earth and sun. That means conduction and convection are not possible.

7.) In a convection current _____.
C.)cool fluid is more dense, and therefore, sinks

Cool fluid have lower volume, thus become denser than warm fluid. Since its density higher than the warm fluid, it will sinks and moves toward the earth. The warm fluid also rises to replace the cool fluid.

8.) Nuclear reactions occurring in the Sun _____. Select all that apply.
generate light
generate heat
fuse atoms of hydrogen to make helium atoms

Sun is bright and hot, which means it produces light and heat. The reaction should be producing energy, not absorbing energy. The reaction that produces that energy would be the fusion reaction of hydrogen into helium.

9.) Which of the following statements is true?
C.)The sun's energy comes from the nuclear reactions of changing hydrogen into helium.
The sun reaction is right, it is forming helium using hydrogens.
Transfer of heat in liquid mostly happens because convection which need direct contact. But the heat can transfer by radiation too, so its a bit ambiguous.
Temperature represents the average kinetic energy of the molecule and it is different with heat/thermal energy.

In a reaction, a gas being produced is

Answers

A solid product called a may form when chemicals in two liquids react, as shown in the photograph below. ... The photo- graph below shows an example in which carbon dioxide gas is produced by a chemical reaction. Temperature Change Most chemicalreactions involve a temperature. change.

Three different sub-atomic particles are described below:
Particle X: Uncharged
Particle Y: Present outside the nucleus
Particle Z: Attracts Particle Y
Which statement is true?
X is a neutron, Y is an electron, and Z is a proton.
X is a neutron, Y is a proton, and Z is an electron.
X is a proton, Y is an electron, and Z is a neutron.
X is an electron, Y is a proton, and Z is a neutron.

Answers

Particle x is uncharged. That makes the last 2 wrong. Both electrons and protons have charges.

If y is outside the nucleus, it is an electron. and z must be the proton.

Choose the first answer. <<<<<<=====

Answer:

The first answer

Explanation:

Why? Because i got it right on my test.

I didn't copy of the other persons answer.

What is the pH of blood, given the hydrogen ion concentration is 4.0 × 10-8M?

Answers

Clinically, a blood pH of 7.4 is considered a normal value. If the pH of the blood is lower than 7.4, it is shown that the blood is acidic, that you have acidosis or a lack of bases. If the pH of the blood is above 7.4, it is said that the blood is alkaline, that you have an alkalosis or excess of base.

For calculating pH of blood, we will use next equation:

pH = -log c(H⁺)

pH = -log(4.0x10⁻⁸)

pH = 7.4

The pH of blood with a hydrogen ion concentration of 4.0 × 10⁻⁸ M, we use the formula pH = -log[H+]. This results in a pH of approximately 7.4, indicating that blood is slightly alkaline.

The pH of blood given the hydrogen ion concentration, use the formula: pH = -log[H+]

Given: [H+] = 4.0 × 10⁻⁸ M

Step-by-step calculation:

First, find the log of 4.0 × 10⁻⁸log(4.0 × 10-8) = log(4.0) + log(10⁻⁸)log(4.0) ≈ 0.6021log(10-8) = -8Therefore, log(4.0 × 10⁻⁸) ≈ 0.6021 - 8 = -7.3979

So, the pH = -(-7.3979) = 7.3979

Conclusion: The pH of blood is approximately 7.4, which is slightly alkaline.

HELP. Check all answers that apply.
Copper oxide is a(n):
atom.
molecule.
subatomic particle.
element.
compound.

Answers

I think the answer is compound

The answer is compound subatomic particles i think.

Olympic athletes have lower resting heart rates because

Answers

they exercise regularly, which improves the efficiency of their heart.

Hope this helps!

-Payshence xoxo

Determine the percent yield for the reaction between 3.74 g of na and excess o2 if 5.34 g of na2o2 is recovered.

Answers

Answer is: the percent yield for the reaction is 84,2%.
Chemical reaction: 2Na + O₂ → Na₂O₂.
m(Na) = 3,74 g.
n(Na) = m(Na) ÷ M(Na).
n(Na) = 3,74 g ÷ 23 g/mol.
n(Na) = 0,162 mol.
From chemical reaction: n(Na) : n(Na₂O₂) = 2 : 1.
n(Na₂O₂) = 0,162 mol ÷ 2 = 0,081 mol.
m(Na₂O₂) = 0,081 mol · 78 g/mol.
m(Na₂O₂) = 6,341 g.
yield of reaction = 5,34 g / 6,341 g · 100%.
yield of reaction = 84,2%.

The percentage yield for the reaction is 84.2%.

What is percent yield?

Percent yield is the difference in the percent of theoretical yield to the percent of actual yield.

The reaction is

[tex]\rm2Na + O_2 = Na_2O_2[/tex]

Mass of Na = 3.74g

Calculating the moles of Na

[tex]\rm Number\;of \;moles= \dfrac{mass}{molar\;mass}\\\\\\Number\;of \;moles= \dfrac{3.74}{23}= 0.162 \;mol[/tex]

The ratio of mole of Na : (Na₂O₂) = 2:1

[tex]\rm Number\;of \;moles= \dfrac{0.162}{2}= 0.081 \;mol\\\\mass\;of Na_2O_3 = 0.081 \times 78\;g/mol\\\\mass\;of Na_2O_3 = 6.341\;g\\\\\\Yield \;of\;reaction = \dfrac{5.34g}{6.341g} \times 100 = 84.2\%[/tex]

Thus, the percent yield is 84.2%.

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The number of protons is different for each element and is know as the

Answers

The number of protons in an element is the Atomic Number

Does the nature of intermolecular forces change when a substance goes from a solid to a liquid or from liquid to gas?

Answers

no, but the number of inter molecular forces does change.

which of the following groups contain 3 elements with stable electron configuration
a. xenon, neon, boron
b. calcium, krypton, argon c. helium, xenon, carbon d. argon, neon, xenon

Answers

Xenon and neon are elements with stable configuration because they are noble gases and have enough to fill their outermost (valence) electron shell. Boron, however, only has 3 electrons in its valence shell, meaning that it is not stable and it needs to gain more electrons to be so. Calcium is an alkali earth metal and has only two electrons in its outermost shell, it will likely lose those two electrons to become stable because it takes less energy than gaining 6. Krypton and argon are other noble gases and have enough electrons to fill their shells. Helium has enough to fill it's outermost shell with 2 due to special properties of that element, it is still a noble gas. Essentially, your answer is D. If you take a look at the periodic table, you'll find your answers out in less time than it took me to type this out. All stable gases, with the exception of hydrogen, are in the last group, usually labeled as "18" but called 8 or 0.

Option d, which includes argon, neon, and xenon, contains three elements with stable electron configurations as they are all noble gases with full valence shells.

The student's question pertains to the electron configuration of elements, specifically identifying a group of elements that all have stable electron configurations. A stable electron configuration typically means having a full valence shell of electrons, which is characteristic of the noble gases. Noble gases include helium, neon, argon, krypton, xenon, and radon, and they are known for being chemically inert, or nonreactive, due to their complete electron shells. The correct answer to the question is option d. argon, neon, xenon, as all three of these elements are noble gases and therefore have a stable electron configuration.

Will maynez burns a 0.8-g peanut beneath 76 g of water, which increases in temperature from 22âc to 46 âc. (the specific heat capacity of water is 1.0 cal/(gââc).)

Answers

Based on the information provided, it appears that you will need to calculate the amount of heat absorbed by the water from the peanut that was burned. We are given the following information:

specific heat capacity, c = 1.0 cal/g°C
mass of water = 76 g
Ti = 22°C
Tf = 46°C
change in temperature, ΔT = 24°C

We can use the formula q = mcΔT to measure the amount of energy absorbed by the water to increase in tempature:

q = (76 g)(1.0 cal/g°C)(24°C)

q = 1824 cal

Therefore, the water absorbed 1824 calories from the peanut that was burned.

Which of these choices is an indirect cost of using coal?

A. Cost to transport coal
B. Cost of maintaining power plants
C. Cost to mine coal
D. Cost of pollution from burning coal

Answers

Answer:

D. Cost of pollution from burning coal

Explanation:

Energy resources can be classified into two categories: renewable and non-renewable.

Renewable resources are those that can be replenished within a short time. This includes, wind energy, solar, hydrothermal etc

Non-renewable resources in contrast, are finite and are in limited supply. This includes, fossil fuels like coal, oil and natural gas as well as nuclear energy.

Coal is a fossil fuel which also the most common source of energy. However, it pollutes the environment by emitting carbon dioxide which is greenhouse gas.

In an ecosystem ,cost of pollution from burning coal is an indirect cost of using coal.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Molecules of hydrogen escape from earth, but molecules of oxygen and nitrogen are held to the surface and remain in the atmosphere. explain.

Answers

Hydrogen escape from Earth because he is ligher than molecules of nitrogen and oxygen. Hydrogen move faster and can escape Earth's gravitational force.
One mole of molecule of hydrogen (H₂) has molecular mass 2 g/mol, molecule of nitrogen (N₂) has molecular mass 28 g/mol and oxygen (O₂) has 32 g/mol.

Answer:

Hydrogen is a light molecule

Explanation:

The molecular weight of a gas determines its molecular speed. Hydrogen is a very light gas, far lighter than oxygen or nitrogen. These heavier gases cannot escape the earth because of their molecular weight but hydrogen does escape the earth surface because it is very light molecule having very high molecular speed.

A sample of ammonia contains 0.500 mol. What volume at STP would the gas occupy?

Answers

To convert from moles to volume, you simply multiply the moles by 22.4 L.

(.500 mol)(22.4L)= 11.2 L

A sample of ammonia would occupy 11.2 L at STP.

I attached a mole map. Hope that'll help you in the future.

The vapor pressure of water at 25.0 oc is 23.8 torr. determine the mass of glucose (molar mass = 180. g/mol) needed to add to 27.78 moles of water to make a solution that has a vapor pressure of 23.1 torr.

Answers

According to the formula of vapor pressure:

Pv(solu) = n P°v(water)
when we have Pv(solu) = 23.1 torr & Pv(water) = 23.8 torr so we can get the mole fraction of water (n)
∴ n = Pv(solu) / Pv(water)
= 23.1 / 23.8 = 0.97 mol
when mole fraction of water = moles of water / (moles of water + moles of glucose)
So by substitution::
0.97 = 27.78 / (27.78+ X)
∴moles of gulcose = 0.85 mol
∴ mass of glucose = no.of moles * molar mass
= 0.85 * 180 = 152 g

What is the mass of 1.71 ✕ 1023 molecules of h2so4?

Answers

The equation for calculating a mass is as follows:

m=n×M

Molar mass (M) we can determine from Ar that can read in a periodical table, and a number of moles we can calculate from the available date for N:

n(H2SO4)=N/NA

n(H2SO4)= 1.7×10²³ / 6 × 10²³

n(H2SO4)= 0.3 mole

Now we can calculate a mass of H2SO4:

m(H2SO4) = n×M = 0.3 × 98 = 27.8 g

Identify which statement describes the following process. 2Ce + 3Cu2+ → 3Cu + 2Ce3+
A-Ce is oxidized because it is losing electrons and Cu is reduced because it is gaining electrons.
B-Ce is oxidized because it is losing electrons and Cu is reduced because it is losing electrons.
C-Ce is reduced because it is losing electrons and Cu is oxidized because it is gaining electrons.
D-Ce is reduced because it is gaining electrons and Cu is oxidized because it is losing electrons.

Answers

Answer: A-Ce is oxidized because it is losing electrons and Cu is reduced because it is gaining electrons.

There are two reactions in the equation, oxidation and reduction. A molecule that oxidized will lose electrons while the molecule that reduced will gain electrons. In this case, Cu2+ changed into Cu which means its oxidation number reduced from +2 into 0. Ce oxidation number increased from 0 into +3

The correct statement describing the process is A. Ce is oxidized because it is losing electrons and Cu is reduced because it is gaining electrons.

To understand the oxidation and reduction processes in the given chemical reaction, we need to look at the changes in the oxidation states of the elements involved:

The reaction is:

[tex]\[ 2\text{Ce} + 3\text{Cu}^{2+} \rightarrow 3\text{Cu} + 2\text{Ce}^{3+} \][/tex]

For cerium (Ce), it starts with an oxidation state of 0 (since it is an elemental form) and ends up as Ce³⁺ , which means its oxidation state has increased from 0 to +3. An increase in oxidation state indicates that the element has lost electrons, which is the definition of oxidation. Therefore, Ce is oxidized. For copper (Cu), it starts with an oxidation state of +2 (since it is in the form of Cu²⁺ ions) and ends up as elemental copper with an oxidation state of 0. A decrease in oxidation state indicates that the element has gained electrons, which is the definition of reduction. Therefore, Cu is reduced. The correct description of the process is that Ce is oxidized because it loses electrons, and Cu is reduced because it gains electrons, which corresponds to option A. The other options contain incorrect descriptions of the oxidation and reduction processes for Ce and Cu.

Marine organisms that are well adapted to drastic changes in salinity would most likely be found in which environment?
a. Hydrothermal vent
b. Estuary
c. Open ocean
d. Deep ocean

Answers

The answer is Estuary

K12 the answer is estuary

Hope this helps!

51.7ml at 27 Celsius and 90kpa to stp

Answers

STP is the abbreviation of standard condition for temperature and pressure which is 273.15K temperature and 1.013× 10^5 Pa pressure. Since the pressure and temperature changes, I assume the question would ask about the result of the volume. The temperature used in ideal gas should be Kelvin, so 27 Celcius would be 300.15K.
The calculation would be
PV=T
V=T/P

V2/V1= T2*P1/T1*P2
V2/V1=273.15K* 90^10^3Pa/ 300.15K * 1.013× 10^5 Pa
V2= 0.81904 * 51.7ml
V2= 42.34ml

Of the choices below which one is not an ionic compound quizlwr

Answers

Final answer:

NC13 is a compound that is not an ionic compound.

Explanation:

Of the compounds listed, the only one that is not an ionic compound is NC13. Ionic compounds are formed between a metal and a nonmetal, where electrons are transferred from the metal atom to the nonmetal atom. Covalent compounds, on the other hand, are formed between nonmetals, where electrons are shared between atoms. In this case, NC13 is covalent because it is composed of nitrogen (a nonmetal) and chlorine (also a nonmetal).

what is part of the first stage in the process of technological design

Answers

Answer:

Researching information

Explanation: Edge 2020

hope this helps <3. Brainliest?

Identifying the problem is the first stage in the process of technological design.

What do you mean by technological design?

Technological design is a distinctive process with a number of defining characteristics: It is purposeful; it is based on certain requirements; it is iterative; it is creative; and it is systematic.

The four steps in the technological design process are:

Identify the problem Design a solution or product Implement the design Evaluate the product/solution.

Hence, identifying the problem is the first stage in the process of technological design.

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An explanation based on experimentation and data is a scientific

Answers

Hello,

Here is your answer:

The proper answer to the question is a "scientific theory"! That's because a scientific theory is a explanation based on expierment and data!

Your answer is scientific theory!

If you need anymore help feel free to ask me!

Hope this helps!

When a neat, ordered chemical is changed into a more disordered chemical, there is an increase in what?

Answers

When a neat, ordered chemical is change into a more disordered chemical, then there is an increase in ENTROPY.
Entropy refers to the degree of disorderliness in a reacting system. The degree of entropy is considered to be zero, when there is no disorderliness. The degree of entropy increases as the disorderliness increases.

What is the energy of an object in motion

Answers

It's kinetic energy :)

If the strength of the magnetic field at B is 6 units, the strength of the magnetic field at A is _____.

file:///C:/AOP/SH2016Curric/AOP.COM.Science.09IPC.2015/IntegratedPhysicsandChemistry2015/9/magnetic_field_ex1.gif

Answers

Think its close to 24 if thats a multiple choice answer, I cannot view the image sorry.

Final answer:

The magnetic field strength at point A cannot be determined based solely on the strength at point B being 6 units. Factors such as distance from the magnet, the presence of ferromagnetic materials, and orientation relative to the magnetic lines of force could affect its strength.

Explanation:

Unfortunately, there is missing information in your question. The strength of the magnetic field at point A cannot be determined, just with the strength at point B being 6 units. The magnetic field strength can vary depending on factors like the distance from the magnet, if any ferromagnetic materials are near, and the orientation relative to the magnetic lines of force. Without additional context or information, it's impossible to infer the magnetic field strength at point A accurately.

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When 7.94 g of xylene was added to 132.5 g of cyclohexane, the freezing point of the solution was -4.9oC. What is the molar mass of xylene?

Answers

Answer is: molar mass of xylene 106,18 g/mol.
m(xylene) = 7,94 g.
m(cyclohexane) = 132,5 g.
T (solution) = - 4,9 °C.
Tf(cyclohexane) = 6,5 °C, frezing point.
Kf(cyclohexane) = 20,2 K·kg/mol; cryoscopic constant.
ΔT(solution) = 6,5°C - (-4,9°C) = 11,4°C = 11,4 K.
M(xylene) = Kf · m(xylene) ÷ m(cyclohexane) · ΔT(solution).
M(xylene) = 20,2 K·kg/mol · 7,94 g ÷ 0,1325 kg · 11,4 K.
M(xylene) = 106,18 g/mol.

What is the atomic nucleus made of ?

only neutrons

electrons

only protons

nucleons

Answers

Answer: nucleons

Explanation:

The nucleons are the particles that constitue the nuclei of the atoms. Those are protons and neutrons.

They are not elementary particles (quarks are the elementary particles that form both protons and neutrons).

Protons are the particles that define the elements. Any different elements have different number of protons. H has one proton, He has 2 protons, Li has three protons, Na has 11 protons, U has 92 protons.

Protons are positively charged and the number of protons in any neutral atom is equal to the number of electrons (the electrons, which are elementary negatively charged particles, are around the nucleous).

Neutrons have not charge and are responsible for the stability of the nuclei. They are fundamental to avoid that the repulsion forces between the positively charged protons ends causing the collapse of the nuclei.

The atomic nucleus is made of Nucleons

Which of the following applies to a good hypothesis?
Select all that apply

- It explains the data that relates to the specific problem.
- It leads to correct predictions, some of which produce new evidence or experiments.
- It is biased by the experimenter's presuppositions.
- It is formulated based on subjective observations.
- It is formulated based on objective observations

Answers

1). it leads to correct predictions, some of which produce new evidence or experiments.
2). It is formulated based on objective observations.
3). It explains the data that relates to the specific problem.

Hope this helps!
♤MidnightQueen

The statements that applies to a good hypothesis are.

It explains the data that relates to the specific problem.It leads to correct predictions, some of which produce new evidence or experiments. It is formulated based on objective observations

Good hypothesis explained.

A good hypothesis ought to give an clarification for the information related to the issue being examined. It ought to too lead to forecasts that can be tried and possibly create modern prove or tests.

A good hypothesis ought to be defined based on objective perceptions, meaning it ought to be grounded in irrefutable and quantifiable information instead of subjective conclusions or inclinations.

It is worth noticing that a hypothesis can be impacted by earlier

information or foundation presumptions, but it ought to still be based on objective perceptions and open to experimental testing and confirmation.

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