4. How would you calculate the poH of a base when given the

concentration of [OH]-?

Answers

Answer 1

Answer:

Use pOH = -log₁₀ [OH-]

Explanation:

pOH can be calculated from the concentration of hydroxide ions using the formular below:

pOH = -log₁₀ [OH-]

The pOH is the negative logarithm of the hydroxide ion concentration.


Related Questions

Can someone help me with these answers please I’ll give Brainly !!!!

Answers

1.What's the first thought that comes to mind when you hear "nuclear"? nuclear, that's the word. well the first thing that comes into everyone's mind in nuclear and they have to think it then think of words that associate with it.

2.the most important point of something.

3.test site

4.

Which of the following is an acid-base neutralization reaction?
A
Mg + 2 HCl → MgCl2 + H2

B
SiCl4 → Si + 2 Cl2

C
AgNO3 + KCl → AgCl + KNO3

D
HCl + KOH → KCl + H2O

Answers

Answer:

D

Explanation:

The reaction in which an acid reacts with a base to form salt and water is called acid base reaction.

here, HCL ( strong acid) reacts with KOH (strong base) and KCL (salt) and H2O (water) is formed.

The reaction between HCl and KOH is an example of acid-base neutralization reaction. Thus, the correct option is D.

An acid-base neutralization reaction refers to the reaction between an acid and a base that react to form a corresponding salt and water.

The anion from the acid and the cation from the base combine to form the salt. In this case, chloride ions (Cl⁻) and potassium ions (K⁺) combine to form the salt potassium chloride (KCl).

Salt formation leads to neutralization of the charge in the molecule, and also, the pH of the solution gets neutralized whose extent depends upon the strength of the acid and base used.

The hydrogen ions (H⁺) from the acid and hydroxyl ions (OH⁻) from the base combine to form water.

Learn more about acid-base neutralization in:

https://brainly.com/question/31591186

#SPJ1

What is the definition of bond (in chemistry) ?

Answers

Answer:

Bond is a force that binds two atoms together.

The equilibrium of 2H2O(g) 2H2(g) + O2(g) at 2,000 K has a Keq value of 5.31 x 10-10. What is the Keq expression for this system?
A) [H2}^2[O2} / [H2O]^2
B) [H2][O2] / [H2O]
C) [H2O]^2 / [H2]^2[O2]
D) [H2O]^2 / [H2][O2]

Answers

Answer:

B

Explanation:

I don't know how to explain this but you get it

Describe how the Sun and Earth formed.

Answers

Answer:

When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.

What is the pressure of the gas if we have 3.50 moles of helium at -50.0°C
in a rigid container whose volume is 25.0 liters?
003 kPa
-58.2 kPa
259.6 kPa
0.0 kPa

Answers

Answer:

259.6kPa

Explanation:

because it is big

A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy. The efficiency of the engine is

Answers

I think it’s 40% but I’m not sure

A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy, then efficiency of the engine is 25%.

How do we calculate efficiency?

We can calculate the efficiency by using the below equation as:

Efficiency = (Actual production / Theoretical production) × 100%

Given that,

Actual production = 604 kJ

Theoretical production = 2,416 kJ

On putting values in given equation, we get

Efficiency = (604/2,416) × 100% = 25%

Hence efficiency of the engine is 25%.

To know more about efficiency, visit the below link:
https://brainly.com/question/15418098

#SPJ2

Water and oil are "immiscible", meaning they do not mix but stay
separated when combined in a glass. What is the best explanation for this?

1.both are polar molecules

2.both are nonpolar molecules

3.water is a polar molecule and oil is a nonpolar molecule

4.water and oil are both compounds

Answers

Answer:

Good luck man

Explanation:

Good luck man

Which is an example of cooperation?
individual ants together make up an ants’ nest
when an organism is more successful at hunting than another
when an organism finds a new way to get itself water
when people get together to stop the killing of the hawks, skunks, and weasels

Answers

The last one I think

Help please At which boundary type would mountains, such as the Himalayans, most likely form?

Question 6 options:

Divergent

Convergent

Transform

Slip Fault

Answers

Answer:

convergent is the answer

If 2.28 g C8H18 reacts with 7.00 g of Oz, predict the mass of CO, that can be produced and
identify the limiting reactant. Explain how you got your answers.
Unbalanced equation: C8H180 + 026) • CO26) + H₂O

Answers

Answer:

O₂ is limiting reactant and 6.17g CO₂ can be produced

Explanation:

Based on the balanced reaction:

C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O

1 mole of C₈H₁₈ reacts with 25/2 moles O₂.

To solve this question we must convert the mass of each reactant to moles and, using the balanced reaction, we can find limiting reactant. With moles of limiting reactant we can find the moles of CO₂ and its mass as follows:

Moles C₈H₁₈ -Molar mass: 114.23g/mol-

2.28g * (1mol / 114.23g) = 0.0200 moles C₈H₁₈

Moles O₂ -Molar mass: 32g/mol-

7.00g * (1mol / 32g) = 0.219 moles O₂

For a complete reaction of 0.0200 moles C₈H₁₈ are needed:

0.0200 moles C₈H₁₈ * (25/2moles O₂ / 1mole C₈H₁₈) = 0.250 moles of O₂ are needed.

As there are just 0.219 moles, O₂ is limiting reactant.

Moles of CO₂ that can be produced:

0.219 moles O₂ * (8moles CO₂ / 25/2moles O₂) = 0.140 moles CO₂

The mass is -Molar mass CO₂: 44.01g/mol-:

0.140 moles CO₂ * (44.01g / mol) =

6.17g CO₂ can be produced

If the half-life of a radioactive substance is 500 million years and you have 48 atoms of it, how many half-lives will have passed by the time that 6 atoms of the substance remain?
O A. 3
O B. 2
O C. 4
O D. 5

Answers

Answer: 3

Explanation:

what does climate change have to do with glacial change ​

Answers

Answer:

Because glaciers are so sensitive to temperature fluctuations accompanying climate change. so if it gets hotter then the ice glaciers will melt.

Explanation:

Which of the following statements is true?

A- Chemical digestion includes the physical breakdown of chunks of food.

B- Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth.

C- Mechanical digestion uses teeth to grind food and saliva to moisten the food
making it easier to chew.

D- Chemical digestion includes the chemical breakdown of food and mixing of the food particles with the help of the tongue

Answers

B- Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth.

C- Mechanical digestion uses teeth to grind food and saliva to moisten the food

making it easier to chew.

These points are true.

What do plants do with sugar? *


Release it through their stoma

Eat it for energy

Convert it into oxigen

Convert it into water

Answers

Answer:

its B .Eat it for energy.

When 0.875 g. of magnesium was heated in air, 1.25 g. of magnesium oxide
(MgO) was produced. How much oxygen must be added?

Answers

Answer:

1. What is the coefficient for calcium in the balanced equation?

2 Ca + 5 NaOH → 4 Na + 2 Ca(OH)2

2. The burning of 20.0 g of acetylene (C2H2) produces what mass of carbon dioxide? You must

write the equation, balance it and solve the mass-mass problem.

a. Balanced equation:

2 C2H2 + 5 O2  4 CO2 + 2 H2O

Explanation:

Which heat source is most directly connected to the seasons?

Answers

Answer:

the solar heat source from the sun is what gives us most of the heat

Explanation:

ILL MARK BRAINLIEST :)
Describe the law of conservation of mass in your own words *DO IT IN YOUR OWN WORDS PLEASE*​

Answers

Explanation:

According to the law of conservation of mass, mass can neither be created nor destroyed but it can simply be transformed from one form to another.

For example, [tex]Na^{+} + Cl^{-} \rightarrow NaCl[/tex]

Mass of Na = 23 g/mol

Mass of Cl = 35.5 g/mol

Sum of mass of reactants = mass of Na + mass of Cl

= 23 + 35.5 g/mol

= 58.5 g/mol

Mass of product formed is as follows.

Mass of NaCl = mass of Na + mass of Cl

= (23 g/mol + 35.5) g/mol

= 58.5 g/mol

As mass reacted is equal to the amount of mass formed. This shows that mass is conserved.

As a result, law of conservation of mass is obeyed.

When you mix water and salt you get a. ​

Answers

Salt water , from the ocean

Write the formulas for the following compounds :

Sodium phosphate

Phosphorus triiodide

Answers

sodium phosphate = Na₃PO₄

phosphorus triiodide = PI3

hope this helps. make brainliest please!

Explanation:

1.Na3PO4

2.PI3

therefore this is the formula for sodium phosphate and phosphrous triiodide

how many carbon atoms are in 26-hydrogen alkyne

Answers

An alkyne contains four carbon atoms.... so if you do 26 multiplied by 4 it equals 104... I do not know if that’s the answer so I apologize if it’s wrong :,)

20. Which of the following is the correct name for N205?
O nitrate oxide
O dinitrogen pentoxide
O nitrous oxide
O nitrogen dioxide

Answers

Answer: N205 is dinitrogen pentoxide

Answer:

B!

Explanation:

Di stnds for 2 (N2)

pent = 5 (05)

Deforestation is the act of destroying forests so the land can be used for other purposes. Do you think deforestation increases, decreases, or has no effect on the biodiversity of the forest ecosystem? Explain your answer.

Answers

Answer:

deforestation decreases biodiversity of the forest ecosystem

Explanation:

Deforestation has to do with the process of felling trees. This process destroys forest ecosystems. Deforestation is normally carried out for the purpose of development.

An ecosystem is a self supporting unit in which living and non living things interact. The different species of plants and animals found in an ecosystem is called biodiversity.

Since organisms in an ecosystem interact among each other and with their non-living environment, destruction of the trees in the forest ecosystem leads to the loss of certain species present in the ecosystem.

For instance, climbers and animals found on tree tops are normal components of a forest ecosystem. When trees are felled and the forest ecosystem is destroyed across the world, these organisms are threatened. This leads to loss of species or loss of biodiversity.

Answer:

Here’s one possible answer:

Deforestation will likely decrease the biodiversity of the forest ecosystem. It reduces the living space and food sources for some of the organisms. Scarcity of space and food may be a threat to the population of those organisms. Over time, some species may die off, leaving fewer species in the forest.

Explanation:

True or False?

When it is summer in the Northern Hemisphere, it is summer all around the word

Answers

True.................

Which statement describes the Richter scale?
It cannot account for fault movement during an earthquake.
It measures large earthquakes far from the seismograph.
It estimates the total energy released from an earthquake.
It increases in magnitude as amount of damage increases.

Answers

Answer:

It measures large earthquakes far from the seismograph.

Explanation:

It uses a seismograph to measure earthquakes far from the seismograph where seismic waves are used to determine the magnitude of an earthquake.

Answer: d. It increases in magnitude with an increase in size of seismic waves.

Explanation:

If a book has a weight of 23.2 N on Earth, what is its mass?

Answers

Answer:  Mass is 2,37 kg

Explanation: Weight G = mg, and g = 9.81 m/s² on Earth.

m = W/g = 23.2 N /  9.81 m/s²

how many layer does the earth have?

Answers

Answer:

The earth is split into four major layers: the crust, the mantle, the outer core and the inner core

Explanation:

How is entropy related to the spontaneity of a reaction? AP3X

Answers

Answer:

S>0 contributes to spontaneity.

Explanation:

i just took the test on a pex :)

According to the law of thermodynamics, the relationship between entropy and the spontaneity of a reaction is S > 0.

What is entropy?

Entropy is the total amount of energy in a closed system that is present there, but there are no uses for that energy. It is the unused energy for any work.

By the second law of thermodynamics, any spontaneous process results in an increase in the universe's overall entropy. The total of the entropy produced by the spontaneous process and the change in energy brought on by the heat flow is known as the net change in entropy of the system or S.

The reaction will be spontaneous if the delta G is negative. Delta G is the Gibbs free energy. So the entropy S will be greater that the reaction.

The Gibbs free energy equation is:

△G = △H − T△S

Thus, the relation is S > 0.

To learn more about entropy, refer to the link:

https://brainly.com/question/13386678

#SPJ2

How many grams of copper (II) oxide will react with 10 liters of hydrogen gas?​

Answers

Answer:

maybe 200g

I don't know thats just a guess

HOPE ITS TURE

Is this correct??Pls help!!!

Answers

Answer:

C

Explanation:

Answer:

Yes, your answer is correct. B is correct :3

Other Questions
According to the video, what challenges do Ship and Boat Captains face? Check all that apply.O enemieslong hourshard workpublic speakingmissing cargodangersO isolation what personal question did jay gatsby ask nick in chapter 5? Which of these is not a principle of natural selection?A. Over time, the offspring of individuals with helpful variations make up more of a population and eventually become a separate speciesB. Variations are passed to offspringC. Differences, or variations, occur among individuals of a speciesD. Adaptations happen in a start stop fashion The biggest limitation of a network operating system (NOS) is _____ in terms of memory, process, device, and file management. A picture is to be mounted on a board.10 cm14 cmPicture8 cmBoard11 cmShow that the picture and the board are not mathematically similar The Lamb by William Blake Little Lamb who made thee Dost thou know who made thee Gave thee life & bid thee feed. By the stream & oer the mead; Gave thee clothing of delight, Softest clothing wooly bright; Gave thee such a tender voice, Making all the vales rejoice! Little Lamb who made thee Dost thou know who made thee Little Lamb Ill tell thee, Little Lamb Ill tell thee! He is called by thy name, For he calls himself a Lamb: He is meek & he is mild, He became a little child: I a child & thou a lamb, We are called by his name. Little Lamb God bless thee. Little Lamb God bless thee.What is the lamb an archetype of?sufferinginnocenceexperiencehappiness round 420.86827 correct to 1 decimal place.thank u The scatter plot shows the amount of sunlight some tomato plants received and the amount of each plant grew A condition that occurs when pathogens get inside the body and damage body cells A. hygiene b. fungi c. infection Lightbulbs of a certain type are advertised as having an average lifetime of 750 hours. The price of these bulbs is very favorable, so a potential customer has decided to go ahead with a purchase arrangement unless it can be conclusively demonstrated that the true average lifetime is smaller than what is advertised. A random sample of 50 bulbs was selected, the lifetime of each bulb determined, and the appropriate hypotheses were tested using Minitab, resulting in the accompanying output.Variable N Mean St Dev SEMean Z P -Valuelifetime 50 738.44 38.20 5.40 -2.14 0.016What conclusion would be appropriate for a significance level of .05? A significance level of .01? What significance level and conclusion would you recommend? I'll give brainliest if u are right (CHALLENGE QUESTION FOR ALL OF YOU):What is the most beautiful mathematical equation?*Requirements:1. You need to write the equation 2. You need the Name.3. Explain why it is the most beautiful Can someone help me fill in the blanks 3 9 26a. Use eoch digit once, make the smallest 4-digit number:b. Use each digit once, moke the largest 4-digit number :c. You can use one diga twice, make the smallest 4-digit number:c. You con use one digit twice make the largest 4-digit number. If Rashid faces north and then turns clockwise half a turn, in which direction does he face Sandstone, limestone, and conglomerate cobbles are found in a streambed in New York State where the surrounding bedrock is composed of shales and siltstones. The most likely explanation for the presence of these cobbles is that they wereweathered from the surrounding bedrockformed when shale and siltstone bedrock were erodedtransported to this area from another regionmetamorphosed from shale and siltstone who created this app?? How do permeability and slope affect runoff? plz plz plz plz help me PLEASE HELP ME!! Describe the anatomy and function of the male and female reproductive systemsNo links please