what are the formula molar mass and color of potassium permanganate

The numerical part of the time conversion factor used to convert the answer to km/h2 is 3600.

This factor is obtained by converting the unit of time from seconds to hours. Since 1 hour equals 3600 seconds, multiplying the speed in m/s by 3600 will give the speed in km/h. This is a common conversion used in physics and engineering, where distances and velocities are often measured in different units. It is important to note that this conversion factor only applies if the initial unit of speed is meters per second (m/s). If the speed is given in other units such as miles per hour (mph), a different conversion factor would be needed. The numerical part of the time conversion factor to convert an acceleration value from meters per second squared (m/s²) to kilometers per hour squared (km/h²) is 1296. This factor is derived from the relationship between the two units: 1 m/s² = 3.6 km/h, and squaring both sides results in 1 m/s² = (3.6²) km/h² or 1 m/s² = 12.96 km/h². Hence, to convert a value in m/s² to km/h², you simply multiply the given acceleration by 1296.

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The amount that will be left after 115.2 years, given that you started with 10 grams sample of strontium-90 is 0.625 g

To obtain the amount that will be left after 115.2 years, we shall begin our calculation by obtaining the number of half lives that has passed.

The number of half lives that has passed can be obtained as followed:

n = t / t½

n = 115.2 / 28.8

n = 4

Thus, 4 half lives has passed.

Finally, we shall determine the amount that will be left after 115.2 years. This is illustrated below:

N = N₀ / 2ⁿ

N = 10 / 2⁴

N = 10 / 16

N = 0.625 g

Thus, we can conclude that the amount that will be left after 115.2 years is 0.625 g

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The rate law for the given reaction is k[A][B]^3.

Given reaction is 2A + 3B → Products which is first order in A and third order overall.

To find the rate law we need to use the equation for the third-order reaction which is given as :

k[A]^m[B]^n

where, k is the rate constant

m is the order of the reaction with respect to A (i.e., first order in A)

n is the order of the reaction with respect to B (i.e., third order in B)

By substituting the given values , k[A]^1[B]^3

The order of the reaction with respect to A is 1, so we include [A] to the power of 1, which we can write as [A]^1 or simply as [A]. The order of the reaction with respect to B is 3, so we include [B] to the power of 3, which we can write as [B]^3.

The overall rate law is : k[A][B]^3

Thus, the rate law for the given reaction is k[A][B]^3.

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After completing the task experiment, the velocity of the cart does not change is referred to as a true statement.

This is referred to as the rate of change of the object's position with respect to a frame of reference and time.

Since we were told that the experiment had been completed , then we can assume that the cart is at a state of rest which therefore means that there will be no change in its velocity and is therefore the reason why true was chosen as the correct choice.

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For the transmembrane protein homo-tetramer : a). Each α-helix needs to have 15 amino acid residues to exactly span the 22.5 Å thick lipid bilayer. b). There would be a total of 56 hydrogen bonding interactions in each α-helix. c). The membrane-spanning portion of the homo-tetramer would account for approximately 18.86% of its total mass, based on the calculation using the number of amino acid residues and the molecular weight of the homo-tetramer.

a. To exactly span the lipid bilayer that is 22.5 Å thick, each α-helix needs to have a length equal to the thickness of the bilayer. Since each amino acid residue contributes approximately 1.5 Å to the length of an α-helix, the number of amino acid residues can be calculated as:

Number of amino acid residues = Thickness of lipid bilayer / Length per amino acid residue

Number of amino acid residues = 22.5 Å / 1.5 Å

Number of amino acid residues = 15

Therefore, there would be 15 amino acid residues in each α-helix for them to exactly span the lipid bilayer.

b. In an α-helix, each amino acid residue is connected to four other residues through hydrogen bonding interactions. The hydrogen bonds form between the carbonyl oxygen of one residue and the amide hydrogen of another residue, which are four residues apart along the helical backbone.

The number of hydrogen bonding interactions can be calculated as:

Number of hydrogen bonding interactions = (Number of amino acid residues - 1) × 4

Number of hydrogen bonding interactions = (15 - 1) × 4

Number of hydrogen bonding interactions = 56

Therefore, there would be 56 hydrogen bonding interactions in this α-helix.

c. The membrane-spanning portion of the homo-tetramer consists of two α-helices per subunit, and since it is a homo-tetramer, there are four subunits in total. To calculate the percentage of mass residing in the membrane-spanning portion, we need to determine the mass of the membrane-spanning portion and compare it to the total mass of the homo-tetramer.

The mass of the membrane-spanning portion can be estimated by considering the number of amino acid residues in the α-helices and their average mass. Assuming an average mass of 110 Da per amino acid residue, the mass of the membrane-spanning portion is:

Mass of the membrane-spanning portion = 4 subunits × 2 α-helices per subunit × 15 amino acid residues per α-helix × average mass of an amino acid residue

Mass of the membrane-spanning portion = 4 × 2 × 15 × 110 Da

Mass of the membrane-spanning portion = 13,200 Da

The percentage of mass in the membrane-spanning portion is then calculated as:

Percentage of mass in the membrane-spanning portion = (Mass of the membrane-spanning portion / MW of homo-tetramer) × 100

Percentage of mass in the membrane-spanning portion = (13,200 Da / 70,000 Da) × 100

Percentage of mass in the membrane-spanning portion ≈ 18.86%

Therefore, approximately 18.86% of the homo-tetramer's mass would reside in the membrane-spanning portion.

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a. The final concentration of the HCl solution is 2.0 M.

The formula to be used is: C1V1 = C2V2, where C1 and V1 are the initial concentration and volume of the HCl solution, respectively, and C2 and V2 are the final concentration and volume of the diluted solution, respectively. Plugging in the values given in the problem, we get: C1V1 = C2V2, or (6.0 M)(2.0 L) = C2(6.0 L). Solving for C2,  C2 = (6.0 M)(2.0 L) / (6.0 L) = 2.0 M.

b. The final concentration of the NaOH solution is 2.0 M.

The formula to be used is the same dilution formula as in part (a): C1V1 = C2V2. However, C1 and V1 of the NaOH solution is known, as well as the final volume (V2) of the diluted solution, so, the formula to solve for the final concentration is (C2): C2 = C1V1/V2. Plugging in the values given in the problem, we get: C2 = (12 M)(0.50 L) / (3.0 L) = 2.0 M.

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Using prefixes before the name of each element, the number of atoms of each element present in the molecular is indicated.

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Answer:

Tara is making a scrapbook using 24 photos and 8 newspaper clippings. She wants to put the same number of photos and clippings on each page. What is the greatest number of scrapbook pages Tara can make?

Explanation:

Tara is making a scrapbook using 24 photos and 8 newspaper clippings. She wants to put the same number of photos and clippings on each page. What is the greatest number of scrapbook pages Tara can make?

Answer:

The properties of metals as well as non metals is called metalloids.

Charles’ Law

V₁/T₁=V₂/T₂

78.5/318.15=V₂/273.15

V₂=67.4 ml

Answer:

MASS: The amount of matter in an object. Mass is measured in the unit kg (kilograms). Example: Car = High mass. Paperclip = low mass.

VOLUME: The amount of space something takes up. Volume is measured in the unit m^3 (cubic meters). Examples: School = high volume. Paperclip = Low volume.

Hope this helped!

Explanation:

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer:

480 L

Explanation:

In order to solve this question, you should be familiar with gas laws. (I will attach a picture showing all of them under my answer.) In this question in particular, however, we only need Charles's Law because we're dealing with temperature and volume.

As we can see, Charles's Law is:

\(\frac{V_{1} }{T_{1} } = \frac{V_{2} }{T_{2} }\)

or, initial volume over initial temperature equals final volume over final temperature.

In this question, 60 L is our initial volume, and 0.5 K is our initial temperature (K being Kelvin). We are only given 4 K as our final temperature. We are asked to solve for the final volume. Let's set up the equation and solve for \(V_{2}\):

--------------------------------------------------------------------------------------------------------------

(60) / (0.5) = \(V_{2}\) / (4)

↓

120 = \(V_{2}\) / 4

×4           ×4

↓

\(V_{2}\) = 480 L

--------------------------------------------------------------------------------------------------------------

There's our answer! Feel free to comment if you have any questions about my answer :)

Answer:

Element 2

Explanation:

If we look at the model stated for element 1, it is clear that element 1 must be a noble gas. It has eight electrons in its outermost shell this implies that it has already attained a complete octet of electrons and is reluctant towards chemical reaction.

The second element belongs to group 16 since it has six electrons on its outermost shell. It is certainly more reactive than element 1 which is a noble gas.

Answer: D

Element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Explanation: Answer on Edgenuity

Any substance that is burned in a flame emits a distinctive hue. Knowing the sort of cation present in the compound will allow us to forecast the color of the flame.

Based on the results of the flame test, the provided sweeteners can be separated from one another.

• Equal, an artificial sweetener, is made of a non-ionic molecule (C14H18N2O5). It has no cations at all. It won't exhibit any color in the flame test as a result.

Ace-K sweetener contains the K+ ion as its cation. Ace-K emits a lilac-colored flame as a result of the K+ ion's existence.

• The cation in Sweet 'N Low is the Ca2+ ion. Sweet 'N Low produces a flame that is brick-red in color due to the presence of Ca2+ ions.

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A hill coefficient of 3 indicates that b. the binding of a ligand becomes increasingly harder with each subsequent binding.

The phenomenon in which binding of a ligand becomes increasingly harder with each subsequent binding known as positive co-operativity, where the binding of one enhances the binding of the next. Therefore, it becomes more difficult to bind the next ligand after the first and even more difficult to bind the third.

A ligand is an ion or molecule which holds the ability to donate the electrons to the central metal atom or ion so that the coordination complex can be formed as a product.

Hence, a hill coefficient of 3 indicates that b. the binding of a ligand becomes increasingly harder with each subsequent binding.

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It follows that for every 151.71 g of ilmenite, 180.0 g will contain 47.857 g of titanium. In light of the fact that 151.71 g of ilmenit contains 47.857 g/mol of titanium.

The maximum mass of 56.78 g of pure titanium may be obtained from 180 g of ilmenite, a titanium ore with the chemical formula FeTiO3. The highest possible extraction of pure titanium can be calculated using the formula below: The molar mass of ilmenite is 151.71 g mol 1. Ilmenite is expected to weigh 151.71 g per mole, according to this. According to the chemical formula of the substance, one mole of ilmenite will also contain one mole of iron Fe, one mole of titanium Ti, and three moles of oxygen O. In light of the fact that 151.71 g of ilmenite contains 47.857 g/mol of titanium.

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The volume of the sodium carbonate needed to precipitate is 31.248 ml. This is calculated using the dilution formula.

The molarity of the solution and the volume of the first solution can be correlated with the molarity and the volume of diluted solution. It is called as dilution formula.

Molar concentration is the another term for molarity. Molarity is a measure of the concentration of a chemical species in particular of a solute in a solution in terms of amount of substance per unit volume of solution.

The expression for molarity of the solution is,

M1 V1 = M2 V2

here we have 0.125 m sodium carbonate solution would be needed to precipitate the calcium ion from 37.2 ml of 0.105 m cacl2 solution.  

putting all the values we get,

0.105 * 37.2 = 0.125 * V2

V2 = 31.248

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Answer: yes

Explanation: cuz i know lol

Answer:

Explanation:

Scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept.

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, option A is correct.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.

There is a relation between frequency of wave, and wavelength of wave

Mathematically,

ν =c÷λ

where,

ν =frequency of light

c is speed of light that is 3×10⁸m/s

λ is the wavelength of light

A microphone will likely detect the least amount of sound when placed in cardboard box.

Therefore, option A is correct.

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Answer:

Upthrust.

An upthrust is that outward protruding force that acts opposite to the weight of the object

Answer:single crystal surfaces

Explanation:

Answer:

I'm pretty sure it's The second one

Explanation:

That one is the only one that looks like it started on a positive 5

Answer:

B

Explanation:

Vapour pressure is related to the evaporation and condensation of a liquid. Before we can explain what vapor pressure is, we need to first understand what evaporation and condensation mean.

All liquids have the tendency to evaporate and this evaporation occurs at the surface of a liquid. The liquid has an intermolecular force of attraction and when the kinetic energy of the liquid molecules overcomes this force of attraction, the molecules of the liquid began to escape to the surface. This is called evaporation.

Also in a closed container, the gas molecules possess random motion. During this motion, the molecules begin to collide with the wall of the container, lose energy, and then return back to the liquid. This is known as condensation.

This evaporation and condensation is a continuous process and equilibrium is reached after some time i.e the number of molecules leaving the liquid will be equal to the molecules leaving.

When equilibrium is reached between the liquid and the vapor, the pressure exerted on the surface of the liquid at this point is known as the VAPOR PRESSURE

For instance, ice changes state to form a liquid (water), and this water evaporates at 100 degrees Celcius to form a vapor. The pressure exerted by this water vapor on the surface of the water is the vapor pressure.

Sucrase is the enzyme in the given reaction.

Enzymes help proceed with chemical reactions faster in the body. They play a key role in digesting food, respiration, and other chemical processes happening in the body.

Sucrase is an enzyme that helps with digestion by the hydrolysis of sucrose into glucose and fructose. They are localized in the brush holder for the absorption of food. The body won't absorb sucrose in the absence of sucrase.

Sucrase is also known as invertase and it also occurs in plants for the hydrolysis of sucrose.

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Answer:

d

Explanation:

both of them are true according to me

Answer:

How many atoms of each element are there in one molecule of H3PO4? there are 8 atoms in total in H3PO4. there are 3 atoms of hydrogen, 1 atom of phosphorous and 4 atoms of oxygen in the one molecule of this compound, which is called hydrogen phosphate.

Answer:

brainleist plzzzzzz

Explanation:

There are 8 atoms in total in H3PO4. there are 3 atoms of hydrogen, 1 atom of phosphorous and 4 atoms of oxygen in the one molecule of this compound, which is called hydrogen phosphate

Solubility: The maximum amount of solute that can be dissolved in a solvent at a given temperature and pressure is called solubility.

Partial Pressure: The pressure that a gas exerts when it is present in a mixture of gases is called partial pressure.

The given solubility of NO in water is 0.090 m and the partial pressure is 0.80 atm. We need to find the partial pressure required for the solubility of NO to be 0.060 m.

Hence, let's find the relationship between solubility and partial pressure.

The relationship between solubility and partial pressure can be given as, Henry's Law:

S = KP

Where, S is the solubility of the gas in solution,

P is the partial pressure of the gas above the solution, and

K is Henry's Law constant.

Let's apply the given values to Henry's Law to find the value of

K.0.090 m = K (0.80 atm)

K = 0.090 m / 0.80 atm

K = 0.1125 m/atm

Now, let's find the partial pressure required for the solubility of NO to be 0.060 m using Henry's Law.

0.060 m = (0.1125 m/atm) P

So, the partial pressure required for the solubility of NO to be 0.060 m is 0.53 atm.

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