Potassium hydroxide has the chemical formula KOH. It feels slippery and is used in cleaning liquids. Based on this description, potassium hydroxide is most likely a(n) A acid. B base. с neutral solution. D pH indicator.​

Answer:

9.9 x 10^-2 g*cm²/s²

Explanation:

9.9 × 10^-9 kg*m²/s² =    g*cm²/s²

1 kg*m²/s² = 1 joule(s)

1 g*cm²/s² = 1 erg(s)

britannica

1 kg = 1000g = 1x10^3 g

1 m²= 10000 cm² = 1x10^4 cm²

add the exponents 3 and 4 which = 7

-9 + 7 = -2

9.9 × 10^-9 kg*m²/s² = 9.9 x 10^-2 g*cm²/s²

We need to determine how is the PH in the given mixtures:

A) A weak base and a strong acid:

Acid and base react to form an acidic solution and, being acidic, this results in a solution with a pH lower than 7

B) A strong base and a strong acid:

When mixing a strong base and a strong acid, neutralization occurs, that is, a neutral pH or equal to 7 is obtained

C) A strong base and acid:

If we have a weak acid, when adding a strong base the pH approaches neutrality without sudden changes, but once the acid has been neutralized, just add a few drops of excess soda to obtain a sudden increase in pH as if there were only base. free. In this case, at the equivalence point the pH> 7

ANSWER:

A) Less than 7

B) Equal to 7

C) Greater than 7

Answer:

Explanation:

K: 157.8 g CaCl2

U: ? mol CaCl2

1Ca = 1(40.08) = 40.08

2 Cl = 2(35.45) =+70.90

110.98

157.8 g CaCl2 1 mol CaCl2

x

1 mol CaCl2 110.98 g CaCl2

The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

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The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Answer:

Explanation:

The smallest body of water is the brook, a natural stream of water that is found aboveground and is often called a creek as well. A brook is usually a tributary (a small body of water that naturally flows into a large one) of a river, but this is not always the case.

Answer:

pond

Explanation:

The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.

The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.

The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.

We know that change in temperature of a system is given by the following formula:

Initial boiling point (T₁) = 80.1 °C

ΔT = T₂ - T₁

2.25 = T₂ - 80.1

T₂ = 82.35  °C

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Answer:

82.35

Explanation:

acellus

The redox equation C6H12O6 + 6O2 -> 6H2O + 6CO2 represents the process of cellular respiration. Option C

Cellular respiration is a biochemical process that occurs in living organisms, including plants and animals, to convert organic compounds, such as glucose (C6H12O6), into usable energy in the form of adenosine triphosphate (ATP). It is the primary process by which cells derive energy to carry out their functions.

In the given equation, glucose (C6H12O6) is being oxidized, losing electrons, and releasing carbon dioxide (CO2) as a byproduct. This oxidation process results in the production of energy-rich molecules, such as ATP.

Additionally, oxygen (O2) is being reduced, accepting the electrons from glucose and combining with hydrogen (H) to form water (H2O). This reduction process allows for the transfer of electrons and the generation of energy.

The process of cellular respiration is essential for the survival and functioning of organisms, as it provides the necessary energy for various metabolic activities, growth, and maintenance of cellular processes.

It is a fundamental metabolic pathway found in both plants and animals, enabling them to extract energy from organic molecules through the oxidation of glucose or other fuel sources.

Therefore, option C, cellular respiration, is the correct answer that represents the process described by the given redox equation.

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The product would be aluminum oxide, \(Al_2O_3\).

The word equation for a reaction can be interpreted as the formula equation of the same reaction by writing out the chemical formulas of the reactants and products accordingly.

Now, let's consider the reaction in question:

Four atoms of aluminum metal react with three molecules of oxygen to produce two molecules of aluminum oxide.

Four atoms of aluminum = 4 Al

Three molecules of oxygen = \(3O_2\)

two molecules of aluminum oxide = \(2Al_2O_3\)

Thus, the formula equation would be: \(4Al + 3O_2 --- > 2Al_2O_3\)

In other words, the product would be  \(Al_2O_3\).

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Answer:

the pasta will soften

Explanation:

the pasta will boil and will soften up as a result of it being regular pasta

The symbol is shown as Cr³+ because it loses electrons. Option A

When we talk about the process of oxidation, what is going on is the loss of electrons. Thus it is possible to say that ocidation is electron loss. The electrons that are lost would lead to the formation of a specie that has a positive ion.

The magnitude of the positive charge that we see in the compound is based on the number of electrons that it has lost in the process of the oxidation of the compound. There are three electrons that have been lost for chromium as shown.

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Spontaneous processes are processes such as;  a soluble salt dissolves when it is mixed with water, iron rusts when it exposed to salty water and a match continues to burns after it is lit.

A spontaneous process is a process that occurs without external input of energy or does not require a continuous input of energy once the process has gotten underway.

Among the options the processes which are spontaneous under standard conditions of 1 atm, 298 K and 1 M are;

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The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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Explanation:

The half-life period is represented by the abbreviation P. The time that a material has suffered disintegration is represented by t. Thus, if we know the half-life and the disintegration time (represented by x), we can say how many half-lives a material has gone through until a certain moment. This is done through the relationship below:

t = x * P

With this knowledge, we can still determine the mass that remains after the half-life period from the expression:

m = mo/2^x

were m = mass left

mo = initial mass

x = half-life

Here we have:

P = 9 minutes

t = 27 minutes

x = ????

mo = 80 g

So first let's find x:

t = x*P

27 = x*9

x = 3

now let's find m:

m = mo/2^x

m = 80/2^3

m = 80/8

m = 10 g

Answer: b. 10

The van't Hoff factor for C5H4 is 1.

The van't Hoff factor, denoted as i, represents the number of particles that a solute dissociates into when it dissolves in a solvent. In the case of C5H4, which is a neutral compound, it does not dissociate or ionize when it dissolves in a solvent.

Therefore, the van't Hoff factor for C5H4 is 1, indicating that it remains as a single particle in the solvent.

When a solute dissolves in a solvent, it can sometimes dissociate into multiple particles, such as ions or molecules.

This leads to an increase in the total number of particles in the solution, affecting various properties like colligative properties (e.g., boiling point elevation, freezing point depression).

However, C5H4 does not exhibit this behavior and does not break apart into ions or molecules upon dissolution. Hence, the van't Hoff factor for C5H4 is 1, implying that it does not affect the colligative properties of the solution since it remains as a single particle.

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For Test One, phenotype ratio is Short fur : Long fur = 2 : 0; For Test Two, the phenotype ratio is Short fur : Long fur = 3 : 1; For Test Three, the phenotype ratios will be Short fur : Long fur = 0 : 2

For Test One:

Parent 1: FF (homozygous dominant for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff = 1 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 2 : 0 or 100% short fur

For Test Two:

Parent 1: Ff (heterozygous for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff : ff = 1 : 2 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 3 : 1 or 75% short fur and 25% long fur

For Test Three:

Parent 1: ff (homozygous recessive for long fur)

Parent 2: ff (homozygous recessive for long fur)

The Punnett square for this cross will give the following genotype ratios:

ff : ff = 1 : 0

And the corresponding phenotype ratios will be:

Short fur : Long fur = 0 : 2 or 100% long fur

For this investigation, the test variable is the breed of hamster and the outcome variable is the phenotype of the hamster.

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Answer: Mesopotamia

Civilizations first appeared in Mesopotamia (what is now Iraq) and later in Egypt. Civilizations thrived in the Indus Valley by about 2500 B.C.E., in China by about 1500 B.C.E., and in Central America (what is now Mexico) by about 1200 B.C.E. Civilizations ultimately developed on every continent except Antarctica.

Hope this helps!

Answer:

Not sure sorry :(

Explanation:

Answer:

a. True

Explanation:

There is strong inhibition of Carbon Anhydrase by Aceta-zolamide Carbonic Anhydrase. The drug acetazolamide is used as diuretic which increase the urine production in human body. It lowers pressure in eye in glaucoma.

Answer:

the answer is humidity... sorry that first person just answered for the points that happens to me all the time.

Explanation:

Answer:

Energy, more.

Explanation:

wavenumbers are directly proportional to energy and frequency of the radiation means that if one increases the other automatically increases whereas one decreases the other is also decreases. If the wavenumber increases, the energy of radiation is also increases while on the other hand, if the wavenumber decreases the frequency and energy of radiation is also decreases.

Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and is said to be exothermic.

(Have a good day!)

Answer:

Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and it called exothermic.

The answer is Hydrogyn bonding. It keeps the water molocules bonded together and in a liquid state, without it it'd be in a gashious state.

Answer:Hydrogen bonds keep them together in room temperature, hope this helps!

Explanation:

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Answer:

The answer is

363.6K

Explanation:

\( \frac{p{1}}{t{1}} = \frac{p{2}}{t{2}} \)

\(t{2} = \frac{p{2} \times t{1}}{p{1}} \)

\(t{2} = \frac{855 \times 313}{736} \)

\(t{2} = 363.6k\)

Answer: pH of the solution is 5.47

Explanation: Since HNO3 is a strong acid the concentration of H+ is the same as NO3- only because they are in 1-to-1 ratio. Both ions will have 3.4 x 10^-6 M.

The formula of pH is: pH = -log( the equilibrium concentration of H+ )

When you plug in the concentration of H+:

pH = -log (3.4 x 10^.6 M)

pH = 5.47

Remember: Only the digits after the decimal point are significant figures in logarithms.

For example: 5.47 only has 2 significant figures.

The value is 480 kcal with three significant figures.

One kilocalorie is defined as the amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius at standard atmospheric pressure.

The conversion factor between kilojoules (kJ) and kilocalories (kcal) is approximately 0.239006. This means that 1 kilocalorie is approximately equal to 0.239006 kilojoules.

To convert 2.01 × 10⁶ kJ to kilocalories (kcal) with three significant figures, we can use the conversion factor;

1 kJ = 0.239006 kcal (rounded to six decimal places)

Multiplying 2.01 × 10⁶ kJ by the conversion factor:

2.01 × 10⁶ kJ × 0.239006 kcal/kJ

= 480.4134 kcal

Therefore, the value is 480 kcal.

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They mainly store materials for other cells to use.