Calculating [H.]
DETERMINE THE CONCENTRATION OF HOF EACH SOLUTION
» [OH-] = 1 x 10-IM
CH'] =
» pH = 2
[H] =
» [OH ) = 1 x 10-8 M
(H"]=
» POH= 9
[H] -

Calculating [H.]DETERMINE THE CONCENTRATION OF HOF EACH SOLUTION [OH-] = 1 X 10-IMCH'] = PH = 2[H] =

Answers

Answer 1

Answer:

The answer to your question is given below below:

Explanation:

1. Data obtained from the question:

Concentration of Hydroxide ion, [OH-] = 1x10^-1 M

Concentration of Hydrogen ion, [H+] =..?

The concentration of Hydrogen ion and hydroxide ion are related with the following formula:

[H+] x [OH-] = 1x10^-14

[H+] x 1x10^-1 = 1x10^-14

Divide both side by 1x10^-1

[H+] = 1x10^-14 / 1x10^-1

[H+] = 1x10^-13M

2. Data obtained from the question include:

pH = 2

Hydrogen ion concentration, [H+] =..?

pH = - log [H+]

2 = - log [H+]

-2 = log [H+]

[H+] = antilog (-2)

[H+] = 0.01M

3. Data obtained from the question:

Concentration of Hydroxide ion, [OH-] = 1x10^-8 M

Concentration of Hydrogen ion, [H+] =..?

The concentration of Hydrogen ion and hydroxide ion are related with the following formula:

[H+] x [OH-] = 1x10^-14

[H+] x 1x10^-8 = 1x10^-14

Divide both side by 1x10^-8

[H+] = 1x10^-14 / 1x10^-8

[H+] = 1x10^-6M

4. Data obtained from the question include:

pOH = 9

Hydrogen ion concentration, [H+] =..?

First we shall determine the pH.

The pH and pOH are related with the following formula:

pH + pOH = 14

pH + 9 = 14

Collect like terms

pH = 14 - 9

pH = 5

Now, we can obtain the [H+] as follow:

pH = - log [H+]

pH = 5

5 = - log [H+]

-5 = log [H+]

[H+] = antilog (-5)

[H+] = 1x10^-5M


Related Questions

What is a chemical reaction?
a. a process of bonding substances together
B. a process that leads to have filled valence shells
following the octet rule
C. a process that releases or consumes energy
D. all of the choices

Answers

Answer:

D.

Explanation:

this is because in a chemical reaction all 3 of those work.

Answer:

A chemical reaction is defined as per encyclopedia Britannia as a "a process in which one or more substances, are converted to one or more different substances, the products."

So A is correct, B is correct, C is correct.

So that means we choose D as they're all correct.

4) A 4.00 L balloon is filled with 0.297 moles of helium gas with a pressure

of 0.910 atm. Calculate the temperature, in Kelvin, of the gas. (KEEP 3 SIG

FIGS; DO NOT TYPE ANY UNITS)*

Answers

Answer: 149

Explanation:

Using the ideal gas equation; PV = nRT

P= Pressure = 0.910 atm,     T= Temperature = ?

V= Volume = 4.0L                  R = Gas constant = 0.08206 L.atm/mol/K

n = number of moles = 0.297

Making 'T' the subject of the formular, we have;

T = P V/ n R   =  0.910  x 4  /  0.297 x 0.08206

                       =  149

If they are traveling at the same speed, which will have the most kinetic energy?

A. A 5-kilogram ball

B. A 25-kilogram ball

C. A 10-kilogram ball

D. A 1-kilogram ball

Answers

Answer: B. (A 25 kg ball)

Explanation:

Since [tex]KE = \frac{1}{2} mv^{2} \\[/tex], and velocity is the same for all four balls, the ball with the greatest mass will have the greatest kinetic energy (since mass and KE are directly related). Below shows these calculations:

A. m = 5

[tex]KE = \frac{1}{2} mv^{2} \\[/tex]

[tex]KE = \frac{1}{2} (5)v^{2} \\[/tex]

[tex]KE = 2.5v^{2} \\[/tex]

B. m = 25

[tex]KE = \frac{1}{2} mv^{2} \\[/tex]

[tex]KE = \frac{1}{2} (25)v^{2} \\[/tex]

[tex]KE = 12.5v^{2} \\[/tex]

C. m = 10

[tex]KE = \frac{1}{2} mv^{2} \\[/tex]

[tex]KE = \frac{1}{2} (10)v^{2} \\[/tex]

[tex]KE = 5v^{2} \\[/tex]

D. m = 1

[tex]KE = \frac{1}{2} mv^{2} \\[/tex]

[tex]KE = \frac{1}{2} (1)v^{2} \\[/tex]

[tex]KE = 0.5v^{2} \\[/tex]

What causes the sun's core and the earth's core to have extremely high temperatures?
Select one:
a. The sun undergoes fusion and the earth undergoes fission. b. Both have nuclear fusion occurring in their cores.
c. Both have nuclear fission occurring in their cores.
d. The sun undergoes fission and the earth undergoes fusion.

Answers

(a) The sun undergoes fusion while the earth undergoes fission.

write the balanced standard combustion reaction for the c5h7on3s2

Answers

Answer:

4C5H7ON3S2 + 25O2 —> 20CO2 + 14H2O + 6N2 + 4S2

Explanation:

When C5H7ON3S2 under go Combustion, the following are obtained as illustrated below:

C5H7ON3S2 + O2 —> CO2 + H2O + N2 + S2

Now, let us balance the equation. This is illustrated below:

C5H7ON3S2 + O2 —> CO2 + H2O + N2 + S2

There are 3 atoms of N on the left side and 2 atoms on the right side. It can be balance by putting 4 in front of C5H7ON3S2 and 6 in front of N2 as shown below:

4C5H7ON3S2 + O2 —> CO2 + H2O + 6N2 + S2

There are 20 atoms of C on the left side and 1 atom on the right side. It can be balance by putting 20 in front of CO2 as shown below:

4C5H7ON3S2 + O2 —> 20CO2 + H2O + 6N2 + S2

There are 28 atoms on H on the left side and 2 atoms on the right side. It can be balance by putting 14 in front of H2O as shown below:

4C5H7ON3S2 + O2 —> 20CO2 + 14H2O + 6N2 + S2

There are 8 atoms of S on the left side and 2 atoms on the right side. It can be balance by putting 4 in front of S2 as shown below:

4C5H7ON3S2 + O2 —> 20CO2 + 14H2O + 6N2 + 4S2

Now, there are a total of 54 atoms of O on the right side and 6 atoms on the left side

It can be balance by putting 25 in front of O2 as shown below:

4C5H7ON3S2 + 25O2 —> 20CO2 + 14H2O + 6N2 + 4S2

Now, we can see that the equation is balanced.

In a laboratory, Carlos places one plate with grape jelly and another plate with cooked brown rice inside an ant farm. The next day, he finds that both plates are filled with ants. Carlos wonders if there are certain household foods that are more effective than others at attracting ants. How could Carlos use the scientific inquiry process to determine which foods are most effective at attracting ants? Check all that apply.

Answers

Answer:

The Answers are: A. C. D.

Answer:

by making quantitative observations about the number of ants found on each plate of food

by comparing a plate of cooked brown rice to another household food such as peanut butter

by designing an experiment to test different foods and the number of ants each food attracts

Explanation:

It was right on edge

A scuba tank contains air at 2975 psi and 25°C. The tank is left in a car in the
hot sun and the temperature increases to 44°C. What will be the pressure (psi)
in the tank?

Answers

Answer:

The new pressure is 3164.58 psi.

Explanation:

We have,

Initial pressure, [tex]P_1= 2975\ psi[/tex]

Initial temperature, [tex]T_1=25^{\circ}=298.15\ K[/tex]

The tank is left in a car in the  hot sun and the temperature increases to 44°C, [tex]T_2=44^{\circ} =317.15\ K[/tex]

Let [tex]P_2[/tex] is the final pressure in the tank. Gay Lussac's law,

[tex]P\propto T\\\\\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}\\\\P_2=\dfrac{P_1T_2}{T_1}[/tex]

Plugging all the values,

[tex]P_2=\dfrac{2975\times 317.15}{298.15}\\\\P_2=3164.58\ psi[/tex]

So, the new pressure is 3164.58 psi.

The use of nuclear energy can have both positive and negative consequences. Which of the following is a positive consequence of using nuclear energy? a. Nuclear energy uses nonrenewable resources. b. Nuclear energy produces little air pollution. c. Uranium ore used for nuclear power plants must be mined and processed. d. Nuclear energy has no environmental impact. Please select the best answer from the choices provided A B C D

Answers

Answer

its B

Explanation:

B.

Nuclear energy produces little air pollution.

15. What is the name of Fl-?
A)Fluorous ion
B)Fluorine
C)Fluoride ion
D)Fluorine ion

Answers

Answer:

C: Flouride Ion

How many moles of zinch oxide can be produced from 275 of zinc?

Answers

Answer:

[tex]\large \boxed{\text{4.21 mol}}[/tex]

Explanation:

We must do the conversions :

mass of Zn ⟶ moles of Zn ⟶ moles of ZnO

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:     65.38

              Zn + … ⟶ ZnO  + …

m/g:   275

(a) Moles of Zn

[tex]\text{Moles of Zn} = \text{275 g Zn}\times \dfrac{\text{1 mol Zn}}{\text{65.38 g Zn}} = \text{4.206 mol Zn}[/tex]

(b) Moles of ZnO

The molar ratio is 1 mol ZnO:1 mol Zn

[tex]\text{Moles of ZnO} =\text{4.206 mol Zn} \times \dfrac{\text{1 mol ZnO}}{\text{1 mol Zn}} = \text{4.21 mol ZnO}\\\\\text{The reaction produces $\large \boxed{\textbf{4.21 mol}}$ of ZnO}[/tex]

Classify the elements as diatomic or monatomic. If necessary, refer to the periodic table to help you identify the diatomic elements.

carbon

helium

hydrogen

iodine

oxygen

sodium

Answers

Answer:

carbon- monatomic

helium- monatomic

hydrogen- diatomic

iodine- diatomic

oxygen- diatomic

sodium- monatomic

Explanation:

the diatomic elements can be remembered with this sentence:

Have No Fear Of Ice Clear Brownies

have- hydrogen

no- nitrogen

fear- fluorine

of- oxygen

ice- iodine

clear- chlorine

brownies- bromine

The diatomic molecules are hydrogen ,iodine ,oxygen while the monoatomic molecules are carbon, helium and sodium.

What are elements?

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements  can be classified as metals and non-metals. Metals are shiny  and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity  and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property  of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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if an experiment produces 5g but should have made 500 g what is the percent yield

Answers

The answer is going to be one percent

Explain how you could use Avogadro's Law given the grams of a known compound and volume.

Answers

Avogadro's law. Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules." For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.

According to Avogadro's law, volume is directly proportional  to number of moles which is in relation with the grams of a compound.

What is Avogadro's law?

Avogadro's law is a gas law which states that the total number of atoms or molecules has a direct proportion to the volume occupied by a gas at a constant temperature and pressure.

It is closely related to ideal gas equation as it links temperature, pressure, volume and the amount of substance.It is given as, V∝n,

The straight line graph of volume versus moles is a straight line passing through the origin which implies that zero moles of gas occupy zero volume.The law was proposed by Amedeo Avogadro in year 1811.

The law can be derived from the assumption of kinetic theory  of gases considering their ideal behaviour.

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What is it called when Earth’s magnetic poles change places?
a.
a strike-slip fault
c.
sea-floor spreading
b.
magnetic reversal
d.
continental drift

Answers

Answer:

Its b. Magnetic reversal

Explanation:

Answer:

B

Explanation:

i just did it

Why is burning fossil fuels negative

Answers

Answer:

it causes alot of harm to the earth.

Explanation:

earthquakes

an so on

PLEASE HELP ME OUTTTT

How many grams of Fe3O4 are required to react completely with 54.29 grams of H2?

Fe3O4 + H2 → Fe + H2O

Answers

Answer:

Balance the equation

Fe3O4 + 4H2---> 3Fe +4H2O

Molar mass H2=(2*1)=2g/mol

Mass of H2=54.29grams

mole of H2= 54.29/2=27.15mol

4 mol of H2 = 1 mol Fe3O4

27.15mol of H2= 6.79mol of Fe3O4

Moles of Fe3O4 =6.79mol

Molar mass of Fe3O4= (56×3)+(16×4)

=168+64=232g/mol

Grams of Fe3O4 required to react with 54.29 grams of H2 is 232g/mol× 6.79mol

=1575.28g

What is the shape of the H2S molecule?
bent
pyramidal
linear
trigonal planar

Answers

Answer:

The answer is bent

Answer:

The molecule is bent

Explanation:

fill in the blank
_______ is a gaseous state of matter that contains appreciable numbers of electrically charged particles.
Diamond is harder than graphite. This is a _______ observation.
Chemistry is defined as the study of _______.

Answers

Answer:

1. plasma; 2. qualitative; 3. matter;

Explanation:

PLASMA is a gaseous state of matter that contains appreciable numbers of electrically charged particles.

Diamond is harder than graphite. This is a QUALITATIVE observation.

Chemistry is defined as the study of MATTER.

Plasma  is a gaseous state of matter that contains appreciable numbers of electrically charged particles.Diamond is harder than graphite. This is a qualitative observation.Chemistry is defined as the study of matter.

What is matter?

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.Matter is always conserved  according to law of conservation of matter.

Learn more about matter,here:

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Match each situation below to a letter on the illustration.
Ball
starts
here

Letter
Situation
Potential energy is the highest
Losing kinetic energy, gaining potential energy
Kinetic energy is highest
Losing potential energy, gaining kinetic energy

Answers

Answer:a

Explanation:

In the position A, the potential energy is maximum and the kinetic energy is  minimum. At the point B, kinetic energy is highest. At the point C, the losing kinetic energy, gaining potential energy and at D, losing potential energy, gaining kinetic energy.

What is kinetic energy ?

Kinetic energy of moving body is the energy generated by virtue of its position. Potential energy is generated by virtue of its position at a height from the surface. When a body starts moving from rest, its potential energy starts convert to kinetic energy.

As the height increases,  potential energy increases. When an object moves down, its acceleration due to gravity increases and more energy to fall down make its kinetic energy higher.

Thus, the situations can be matched as follows;

A, the potential energy is maximum and the kinetic energy is  minimum. B, kinetic energy is highest.

C, the losing kinetic energy, gaining potential energy and

D, losing potential energy, gaining kinetic energy.

Find more on kinetic energy :

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HURRY UP ANSWER MY QUESTION
Why does a balloon filled with gas become smaller when placed in a colder environment?
A.atoms / molecules speed up in the cold and thus push out on the balloon more


B.atoms / molecules slow down at lower temperatures and thus push out on the balloon less frequently and with less energy


C.atoms / molecules slow down in the cold and thus push out on the balloon more


D.atoms / molecules speed up in the cold and thus push out on the balloon less
Previous

Answers

Answer:

B

Explanation:

If you remeber a balloon in hot air, it pops. This is because the molecules are moving too fast and need more space to move, thus popping the balloon. If you put a balloon in cold air, then it shrinks, the molecules not moving fast enough and don't need as much space.

how many moles of H2O will be produced from 6 moles of 02

Answers

Answer: 12 moles H20

Explanation:

The tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.

2H2 [g] + O2 [g]------> 2H 2O (1]]

Ava’s best friend has an indoor cat. Ava notices that she sneezes every time that she visits her friend. Ava suspects that she is allergic to cats but is unsure. What is the best thing for Ava to do next?

Answers

the best thing for her to do next is go get an allergy test from the doctors to see if she’s allergic.

C) Test her suspicion by going to see an allergist to diagnose the allergy.

It's right

please help quick im on a test and i only got an few mins left

What Is the Reactivity Series? ...

How Do Glow Sticks Glow? ...

How Do You Get Different Coloured Fireworks? ...

What Is an Alloy? ...

Answers

Answer:

hey

Explanation:

Answer:

I'm really not sure

Explanation:

So there's the answer

What is the energy of an electromagnetic wave with a frequency of 8 x 10^12
Hz?
A. 4.2 x 10-22 J
B. 2.4 x 1021 J
C. 1.59 x 10-12
D. 5.3 x 10-21 J

Answers

Answer:

Energy, [tex]E=5.3\times 10^{-21}\ J[/tex]

Explanation:

It is required to find the energy of an electromagnetic wave with a frequency of [tex]8\times 10^{12}\ Hz[/tex]. The energy of a wave in terms of its frequency is given by :

[tex]E=h\nu[/tex]

[tex]\nu[/tex] = frequency of em wave

[tex]E=6.63\times 10^{-34}\times 8\times 10^{12}\\\\E=5.3\times 10^{-21}\ J[/tex]

So, the energy of an electromagnetic wave is [tex]5.3\times 10^{-21}\ J[/tex]

Answer:

D. [tex]5.3 * 10^-21 J[/tex]

Explain the energy changes that occur when the following reaction happens:
H2 + Cl2 → 2HCl

A. Energy is absorbed when the HCl bonds form.

B. Energy is needed to break the bonds of H-H in H2 and Cl-Cl in Cl2

C. Energy is released when the bonds of H-H in H2 and Cl-Cl in Cl2 break.

D. Energy is released when the H-Cl bonds form.

E. No energy changes occur when this reaction happens.

Answers

Answer:

B

Explanation:

H2 + Cl2 → 2HCl

Hmm redox reaction.

Energy is needed to break the bonds of H-H in H2 and Cl-Cl in Cl2

Write the name of each numbered part of the eye.

Answers

was there supposed to be an image if so it did not pop up

calculate the amount of I - 125 that remains after 178.2 days if we started with 300 grams.

Answers

Answer:

38.3 g

Explanation:

The half life of a substance is the time taken for the substance to decay to about half of its amount.

Let us assume that I-125 have a half life of 60 days. It means that every 60 days, the amount of I - 125 would be halved.

The amount of I - 125 (A) that remains after t days is given by:

[tex]A=A_o*\frac{1}{2^n} \\[/tex]

Where Ao is the initial amount and n = t / half life

Given that:

Ao = 300 g, t = 178.2 days.

Therefore n = t / half life = 178.2 days / 60 days = 2.97

[tex]A=A_o*\frac{1}{2^n} \\A=300*\frac{1}{2^{2.97}}\\ A=38.3\ g[/tex]

A salt is made by adding an excess of an insoluble metal oxide to an acid.
How can the excess metal oxide be removed? *

D filtration
B crystallisation
A chromatography
C distillation

Answers

Answer:

Filtration

Explanation:

Filtration is used to separate solid substances from liquids or large molecules from small molecules. Since, Acid is a liquid and metal oxide is solid so Filtration can be used to separate these two.

which solute will result in a molecular solution?
a. HCN
b. Ba(OH)2
c. CH3COOH
d. CH3CH2OH

Answers

Answer:

d. CH3CH2OH

Explanation:

Molecular solution are solutions when a molecular compound is dissolved in them.

CH3CH2OH represents Ethanol or alcohol carrying "OH" group and is a molecule. CH3CH2OH or Ethanol forms a molecular solution in water.

The equation for Ethanol dissolving in water as follows:

             CH3CH2OH(l) => CH3CH2OH(aq)

CH3CH2OH  srays together as molecules. During dissolving, ethanol molecule fit into spaces between water molecules and completely mix with water.

While HCN, CH3COOH and Ba(OH)2 form ionic solution.

Hence, the correct option is d. CH3CH2OH.

Which shows the correct order of steps in the formation of coal?
Layers of dead plants pile up - plant matter is buried by rocks and dirt - dead plants fall in swamp - plant matter is
compressed and is exposed to heat - coal forms
Plant matter is compressed and is exposed to heat - dead plants fall in swamp - layers of dead plants pile up - plant
matter is buried by rocks and dirt - coal forms
Plant matter is buried by rocks and dirt - dead plants fall in swamp - layers of dead plants pile up - plant matter is
compressed and is exposed to heat - coal forms
Dead plants fall in swamp - layers of dead plants pile up - plant matter is buried by rocks and dirt - plant matter is
compressed and is exposed to heat - coal forms

Answers

Answer:

it is Dead plants fall in swamp, Layers of dead plants pile up, Plant matter is buried by rocks and dirt, Plant matter is compressed and is exposed to heat, and Coal forms.

if iam right please make this into brainlest

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