Why is KOH considered to be a base? A. It has a high concentration of OH+ ions in solution. B. It has a high concentration of H+ ions in solution. C. It has a high concentration of H- ions in solution. D. It has a high concentration of OH- ions in solution.

Answers

Answer 1

Answer:

D. It has a high concentration of OH- ions in solution.


Related Questions

Moseley discovered that elements with similar properties occurred at regular intervals when the elements were arranged in order of increasing

Answers

Moseley discovered that elements with similar properties occurred at regular intervals when the elements were arranged in order of increasing

" Atomic number "

Speed is the rate of change of position expressed as _____ traveled per unit of time. A. direction B. meter C. displacement D. distance

Answers

Answer. Speed is the rate of change of position expressed as distance travelled per unit of time

give brainliest if right

Answer:

distance

Explanation:

If you put a link, you will be reported.

Answers

Answer:

5ppm

Explanation:

there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth). So, 4. 1 part per million (ppm) for a 1g sample is 1 µg or .

I know you said no links, but this is a converter that explained it much better than I know how to

http://www.endmemo.com/sconvert/ppmug_g.php#:~:text=%C2%BB%20Microgram%2Fgram%20Conversions%3A&text=ug%2Fg%E2%86%94ppm%201%20ug%2Fg%20%3D%201%20ppm

heres a screenshot of the site (since i understand links are awful)

A gas sample has a volume of 300.0 L when under a pressure of 3atm. What is the
new volume iſ the pressure is increased to 4 atm while the temperature is held
constant?
200L
225L
300L
900L

Answers

Answer:

V1P1=V2P2

300*30=x*40

900=40x

decide both side by 40to be left by volume x

900÷40=x

x=225L

the answer is x = 225 L

The rate for the decomposition of HI is given. What happens to the rate when the concentration of HI is tripled?
R = k[HI]2


The rate does not change.


The rate triples.


The rate increases by a factor of 6.


The rate increases by a factor of 9.

Answers

Answer: When the concentration of HI is tripled then the rate increases by a factor of 9.

Explanation:

The rate of a chemical reaction is the measure of concentration of reactants or the measure of concentration of products with respect to time.

As the rate of decomposition of HI is given as follows.

[tex]Rate = k[HI]^{2}[/tex]

When concentration of HI is tripled then the new rate will be as follows.

[tex]R^{'} = k[HI]^{2}\\= k \times (3)^{2}\\= 9k[/tex]

This shows that rate increases by a factor of 9.

Thus, we can conclude that when the concentration of HI is tripled then the rate increases by a factor of 9.

which do you think will warm up the plate more quickly?

A. Direct sunlight
B.Indirect sunlight

Answers

Answer: B

your welcome Bsbssnsnsmsllqql

Can anyone help me I just have to name these
Cr(HSO2)6
Au(HTeO3)3

Answers

Answer:

the first on is Chromium(VI) peroxide or chromium oxide peroxide

the second on it Hydrogen Carbonate

Explanation:

I hope this helped ;)

What is the electric potential in volts if the electrical potential energy is 10 joules and the charge is 5 coulombs

Answers

Answer:

2 volts

Explanation:

I got that answer through a long process

If I have 0.044 mol Ammonia (NH3) molecules, how many atoms of hydrogen do I have?

Answers

Answer:

1 Answer. Before you use log you have to multiply the answer of 8.66 mol by 6.02⋅1023 by 3 because the answer of 8.66 mol by 6.02⋅1023 gives you the number of ammonia molecules and in each molecules there are 3 hydrogen atoms present.

Explanation:

how many grams are 7x10^22 molecules of NaOH

Answers

Answer:

you probably not Finn look at this from 1 week

Explanation:

sooo ug

Which of the following represents an alpha particle?
O A. je
B. He
O C. Y
O D.B

Answers

Answer:

Alpha particle- B. He (Helium 4 atom )

He  represents an alpha particle and the correct option is option B.

What is an alpha particle?

Alpha particles are alternatively known as Alpha radiation or Alpha rays. It is a positively charged particle emitted from the decay of various radioactive materials.

They are emitted from the nucleus of some radionuclides during a form of radioactive decay, called alpha-decay.

Alpha particle mass is due to the two protons and two neutrons bonding.

An alpha-particle is identical to the nucleus of a normal (atomic mass four) helium atom i.e. a doubly ionised helium atom.

Therefore, He  represents an alpha particle and the correct option is option B.

Learn more about Alpha particles, here:

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Explain why all other atoms are reactive?

Answers

Answer:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Hope this Helps!~

Please help I’m timed !!!

Determine the percent dissociation of a 0.18 M solution of hypochlorous acid, HClO. The Ka for the acid is

3.5 x 10-8

Оа



Ос

Od

7.9' 10-3 %

4.4'10-2%

6.3' 10-9%

3.5' 10-6 %

Answers

Answer:

b. [tex]\% diss =4.4x10^{-2}\%[/tex]

Explanation:

Hello there!

In this case, given the ionization reaction of HClO as weak acid:

[tex]HClO\rightleftharpoons H^++ClO^-[/tex]

We can write the equilibrium expression as shown below:

[tex]Ka=3.5x10^{-8}=\frac{[H^+][ClO^-]}{[HClO]}[/tex]

In such a way, via the definition of x as the reaction extent, we can write:

[tex]3.5x10^{-8}=\frac{x^2}{[HClO]}[/tex]

As long as Ka<<<<1 so that the x on the bottom can be neglected. Thus, we solve for x as shown below:

[tex]x=\sqrt{3.5x10^{-8}*0.18} =\\\\x=7.94x10^{-5}M[/tex]

And finally the percent dissociation:

[tex]\% diss=\frac{x}{[HClO]} *100\%\\\\\% diss=\frac{7.94x10^{-5}M}{0.18}*100\% \\\\\% diss =0.044\%=4.4x10^{-2}\%[/tex]

Which is choice b.

Best regards!

Which of the following resources is inorganic and renewable

Answers

Inorganic renewable resources come from non-living things such as the water, sun, and wind. Non-renewable resources cannot be easily replaced once they are destroyed. Examples of these resources include fossil fuels such as coal, petroleum, oil, and natural gas.

Which 2 minerals can be scratched by a Diamond but NOT Quartz

Answers

Answer:

topaz and corundum

Explanation:

i know things

A child has a toy balloon with a volume of 1.75 liters. The temperature of the
balloon when it was filled was 21° C and the pressure was 1.00 atm. If the child
were to let go of the balloon and it rose 3 kilometers into the sky where the
pressure is 0.65 atm and the temperature is -10°C, what would the new volume
of the balloon be?

Answers

Answer:

2.41 Litres

Explanation:

Using the combined gas law equation as follows;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (atm)

P2 = final pressure (atm)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

P1 = 1 atm

P2 = 0.65 atm

V1 = 1.75 liters

V2 = ?

T1 = 21°C = 21 + 273 = 294 K

T2 = -10°C = -10 + 273 = 263 K

Using P1V1/T1 = P2V2/T2

1 × 1.75/294 = 0.65 × V2/263

1.75/294 = 0.65V2/263

Cross multiply

294 × 0.65V2 = 1.75 × 263

191.1 V2 = 460.25

V2 = 460.25 ÷ 191.1

V2 = 2.41 L

URGENT PLEASE HELP ILL MARK BRAINLIST Please someone look at the graph and tell me how to fill in the blank like you don't need to do it jsut tell me how and I'll do it myself I jsut don't understand how the instructions are using your periodic table fill in the chart below to show how many elements combine ironically to form neutral compounds remebr that each compound needs to have a total charge of zero ​URGENT PLZ FOR.THE LOVE OF GOD PLEASE ANSWER THIS

Answers

Answer:

Filled below

Explanation:

#v.e means number of valence electrons.

Also, the column total v.e is gotten by adding the v.e of the metal to the v.e of the non metal based on the chemical formula of both of the 2 elements combined.

K: Cl: 5; KCl; 1 + 5 = 6

Be: S: 6; BeS; 2 + 6 = 8

Na: F: 7; NaF; 1 + 7 = 8

Mg: Se: MgSe; 2 + 6 = 8

Al; N; AlN; 1 + 5 = 6

Be; F; BeF2; 2 + 2(7) = 16

Mg; N; Mg3N2; 3(2) + 2(7) = 20

Many different parts of the brain work together to encode, store, and retrieve information as needed. The diagram below indicates three parts of the human brain that are involved in information storage.


Image courtesy of FDA

Which of these terms best describes the process by which the brain stores information that can be retrieved at a later time?
A.
memory
B.
stimulation
C.
nerve specialization
D.
sensory reception

Please help me

Answers

Answer:

Are memories stored in just one part of the brain, or are they stored in many different parts of the brain? Karl Lashley began exploring this problem, about 100 years ago, by making lesions in the brains of animals such as rats and monkeys. He was searching for evidence of the engram: the group of neurons that serve as the “physical representation of memory” (Josselyn, 2010). First, Lashley (1950) trained rats to find their way through a maze. Then, he used the tools available at the time—in this case a soldering iron—to create lesions in the rats’ brains, specifically in the cerebral cortex. He did this because he was trying to erase the engram, or the original memory trace that the rats had of the maze.

Lashley did not find evidence of the engram, and the rats were still able to find their way through the maze, regardless of the size or location of the lesion. Based on his creation of lesions and the animals’ reaction, he formulated the equipotentiality hypothesis: if part of one area of the brain involved in memory is damaged, another part of the same area can take over that memory function (Lashley, 1950). Although Lashley’s early work did not confirm the existence of the engram, modern psychologists are making progress locating it. Eric Kandel, for example, spent decades working on the synapse, the basic structure of the brain, and its role in controlling the flow of information through neural circuits needed to store memories (Mayford, Siegelbaum, & Kandel, 2012).

Many scientists believe that the entire brain is involved with memory. However, since Lashley’s research, other scientists have been able to look more closely at the brain and memory. They have argued that memory is located in specific parts of the brain, and specific neurons can be recognized for their involvement in forming memories. The main parts of the brain involved with memory are the amygdala, the hippocampus, the cerebellum, and the prefrontal cortex 

Answer:

memory

Explanation:

for study island

Researchers are studying a fish population in a small pond that has algae as the only producer in the ecosystem. The scientists are concerned about what might happen to the fish, if the algae suddenly disappear. Why is this a concern? What might be done to prevent this from occurring?

Answers

Explanation:

                 Algae is a group of a photosynthetic eukaryotic organisms that plays a very important role on the ecosystem. It forms the lower base of the food chain and supports all the life forms of the ecosystem. It takes up water and carbon dioxide from the atmosphere to prepare food during the process of photosynthesis and maintains a balance in the ecosystem.

                In the context, if the algae disappears, the fish might die as the small fishes feeds on this algae. This is a concern as the algae is main component of food source and forms the base of the food chain. If there will be no algae there will be no life form on earth, as all species depend on each other to survive.

                  In order to prevent this from occurring, we must protect our algae. We must plant more trees, keep our water bodies healthy, we should not litter our ponds and lakes. We should also help these algae to grow and survive so that other life forms can feed them and thus maintain the ecosystem.

A sheet of muscles called the diaphragm seals the bottom of this cavity true or false?<br />
The blood transports the oxygen to every cell in the body true or false?<br />
The cells need carbon dioxide to release energy true or false?<br />
Carbon Dioxide is a waste product of respiration true or false?<br />
Water is needed in the cells for respiration to occur true or false?<br />
Glucose is made during the respiration true or false?<br />
Respiration does not happen in the cells when we sleep true or false?<br />
Air enters the body through the nose and mouth, and passes into the wind pipe of the trachea true or false?​

Answers

Answer:

1. False. White blood cells do.

2. False. Every seven years your cells are in the process of dying and being replaced. Although some cells don't die but your cells don't last for more than a period of 7 years.

3. True.

4. True.

5. False.

Explanation:

Which element has 1 valence electron in its outer shell and will react with a
group 17 element in a li ratio?
A. Chlorine
B. Calcium
C. Boron
D, Sodium

Answers

Answer:

[tex]\boxed {\boxed {\sf D. \ Sodium}}[/tex]

Explanation:

Valence electrons are electrons in the outermost shell.

One way to find valence electrons is with the electron configuration. This is often found on the Periodic Table. The last number in this configuration is the number of valence electrons, because an electron configuration shows where  electrons are located and the last number represents the outer shell.

Chlorine: 2-8-7 (7 valence electrons)Calcium: 2-8-8-2 (2 valence electrons)Boron: 2-3  (3 valence electrons)Sodium: 2-8-1  (1 valence electron)

In addition, all group 1 or alkali metals have 1 valence electrons. These include lithium, sodium, potassium, rubidium, cesium, and francium.

Even though we already know it is sodium based on valence electrons, here is an explanation of the reaction ratio.

Since sodium has 1 valence electron, it wants to get rid of it to satisfy the Octet Rule (8 valence electrons). Group 17 elements have 7 valence electrons, so they need 1. The two elements will react in a 1 to 1 ratio because the sodium donates its 1 excess electron to the group 17 element that needs 1.

The element that has 1 valence electron in its outer shell and will react with a group 17 element in a 1:1 ratio is sodium. Therefore, the correct option is option D.

The electrons in an atom's highest energy level, commonly referred to as the valence shell, are called valence electrons. These electrons interact with other atoms and participate in chemical bonds. Alkali metal sodium (Na), which belongs to group 1 of the periodic table, contains one valence electron in its outermost shell. Halogens, or group 17 elements, have 7 valence electrons.

Chlorine (Cl) is a member of group 17 and combines with sodium to generate sodium chloride (NaCl), an ionic compound. One sodium atom contributes its one valence electron to a chlorine atom, creating a stable ionic connection.

Therefore, the correct option is option D.

To know more about valence electron, here:

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¿A que se refiere la amplitud de una onda sinusoidal?

Answers

Amplitude is the distance between the center line of the function and the top or bottom of the function, and the period is the distance between two peaks of the graph, or the distance it takes for the entire graph to repeat. Using this equation: Amplitude =APeriod =2πBHorizontal shift to the left =CVertical shift =D.


The amplitude of the sine and cosine functions is the vertical distance between the sinusoidal axis and the maximum or minimum value of the function. In relation to sound waves, amplitude is a measure of how loud something is.

A wave has a frequency of 35 Hz and a wavelength of 15 meters, what is the speed of the wave?

Answers

Answer:

1174.392 mph

Explanation:

.....................

which is the correct answer

Answers

Answer:

3

Explanation:

Answer:

3. 0.50 mol

Explanation:

PLEASE HELP HELP ME. THIS IS DUE TODAY PLEASE

Answers

Answer:

B, C

Explanation:

Hope it helps i read it all

convert 5.0 moles NH3 to mass

Answers

Answer:

85 g

Explanation:

molar mass of NH3 = 17 (get individual atom mass from periodic table and add)

to convert moles to grams use dimensional analysis

(5 mol) x (17 g / 1 mol)           basically just do 5 x 17

= 85 :)

What would be the pH of a solution of a solution with a hydrogen ion concentration of 0.001 M?

Answers

0001 M HCl is the same as saying that 1 *10-4 moles of H+ ions have been added to solution. The -log[. 0001] =4, so the pH of the solution =4.

who wants points from me?​

Answers

Answer:

ok I want

have a good day better than yesterday

thanks a lot for your points

me too ahahahahahahahaha

Atoms are the particles that all matter is made from.
When two or more kinds of atoms combine, they form

A molecules
В pure elements
C the periodic table
D metals

Answers

A they become molecules

i will give brainliest!! plz no links i wiill report

what experimentation,events and/or discoveries led to the development of Hydrogels?​

Answers

A hydrogel is a three-dimensional (3D) network of hydrophilic polymers that can swell in water and hold a large amount of water while maintaining the structure due to chemical or physical cross-linking of individual polymer chains. Hydrogels were first reported by Wichterle and Lím (1960)
The person above me is correct but change the words a bit so you
Other Questions
Select the correct answer. Every dimension of a triangular pyramid is multiplied by 10 to produce a new figure that is geometrically similar. What effect does this have on the surface area of the pyramid? A. The surface area of the pyramid is multiplied by 10. B. The surface area of the pyramid is multiplied by 50. C. The surface area of the pyramid is multiplied by 100. D. The surface area of the pyramid is multiplied by 1,000. E. The effect on the surface area cannot be determined. fjfvbfsjbs;jf;bsfjmn km Cheryls fish tank is 2 yards long by 24 inches wide by 3 feet high. What is the volume of Cheryls tank in cubic inches? Thissss isssss the rest 1) Find the value of x. Round to the nearest tenth. If someone wrote a book about you, what would it be about? Customer service contact number I need help asap i will give good rating make sure to keep answer in exact form A controlled experiment was conducted to analyze the effects of darkness and boiling on the photosynthetic rate of incubated chloroplast suspensions. The dye reduction technique was used. Each chloroplast suspension was mixed with DPIP, an electron acceptor that changes from blue to clear when it is reduced. Each sample was placed individually in a spectrophotometer and the percent transmittance was recorded. The three samples used were prepared as follows.Sample 1 chloroplast suspension + DPIPSample 2 chloroplast suspension surrounded by foil wrap to provide a dark environment + DPIPSample 3 chloroplast suspension that has been boiled + DPIPOn the axes provided, construct and label a graph showing the results for the three samples. A high-temperature gas is compared to the same gas at lower temperature. Which of the following statements is true?A. Every molecule in the high-temperature gas is moving faster than every molecule in the low-temperature gas.B. The average molecular speed in the high-temperature gas is faster than the average molecular speed in the low- temperature gas.C. Both A and B are true.D. Neither A nor B is true. What does Armand want and why?He wants his wife to disown the baby and stay with him.BHe wants to love his wife and baby unconditionally but hesuffers from depression.He wants his wife and baby to leave because he is ashamed.DHe wants to raise his child alone and wants his wife toleave. How does society treat the elderly? in the text the giver help please ill give brainliest answer Mohandas Gandhi said, "in a gentle way, you can shake the world." What does he mean and how does this quote relate to India's independence movement? Do not forget to include the names of the countries involved, why India wanted independence, and how India gained independence with the help of Gandhi's beliefs. I WILL MARK BRAINLIEST! A parabola opening up or down has vertex (0,3) and passes through (4,7). Write its equation in vertex form. Can someone answer number 24 step by step? Ill mark you as brainliest! Answer the following question! HELP WILL MARK BRAINLIEST IF GOTTEN RIGHT what are three consequences of migration to or from the united states? I WILL GIVE BRAINLIEST!! I really need help with this question.