rank the carbonyl‑containing compounds in order of reactivity towards nucleophilic attack. you are currently in a ranking module. turn off browse mode or quick nav, tab to move, space or enter to pick up, tab to move items between bins, arrow keys to change the order of items, space or enter to drop. most reactive least reactive answer bank

The amount by which a solution's vapor pressure, freezing point, and boiling point differ from those of the pure solvent depends on the concentration of solute particles in the solution. This is known as colligative properties.

Colligative properties are physical properties of solutions that depend only on the number of solute particles in the solution, regardless of the chemical identity of the solute particles. The colligative properties include vapor pressure lowering, freezing point depression, boiling point elevation, and osmotic pressure.

For example, in the case of vapor pressure lowering, the presence of solute particles in a solution decreases the number of solvent molecules at the surface of the solution, thereby reducing the vapor pressure of the solution compared to that of the pure solvent.

The amount of vapor pressure lowering is proportional to the concentration of solute particles in the solution, but is independent of the identity of the solute particles.

Similarly, the amount of freezing point depression and boiling point elevation is proportional to the concentration of solute particles in the solution. The colligative properties are important in various fields, such as in the determination of molar mass of unknown solutes or in the process of freeze-drying of food and pharmaceuticals.

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The net charge on lysine (lys) at pH 7 will be +1.

Amino acids: These are the organic molecules which serve as the building blocks of the proteins. They contain an amine group, carboxylic acid group, hydrogen atom, and a variable portion named the R group. The R group will plays a big role in shaping the properties of the amino acid.

Lysine, or L-lysine, is an essential amino acid, means it is necessary for human health, but the body cannot make it. You have to get lysine from food or the supplements. Amino acids like lysine are the building blocks of the protein. In amino acids three are positively charged: lysine (Lys, K), arginine (Arg, R) as well as histidine (His, H).

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The correct answer is:

B) Na⁺; Ca²⁺ for influx of ions.

An influx action potential that enters a presynaptic terminal activates Ca2+ channels and momentarily raises the local Ca2+ concentration in the presynaptic active zone. After activating synaptotagmins Ca2+, neurotransmitter release occurs within a few hundred microseconds. Through the interaction of their C2-domains with phospholipids and SNARE proteins, synaptotagmins' two C2-domains bind Ca2+ and translate the Ca2+ signal into a nanomechanical activation of the membrane fusion machinery. Synaptotagmins cannot initiate exocytosis on their own; instead, they need a necessary cofactor known as complexin, a tiny protein that binds to SNARE complexes and simultaneously activates and clamps the SNARE complexes, setting them up for later synaptotagmin action.

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The wavelength when frequency is 2 x 10^6 s^-1 is 150 m.

What is wavelength?

The wavelength can be defined as the distance between any given point and the same point in the next wave which can be crest to crest or trough to trough. It can be represented by the symbol Lambda. It can be measured in the direction of the wave.

The wavelength can be calculated as,

A = c / v

where A is the wavelength, c is the speed of light and v is the frequency.

A = 3 x 10^8 m s^-1 / 2 x 10^6 s^-1 = 150 m.

Therefore, the wavelength of the wave with frequency 2 x 10^6 s^-1 is 150 m.

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Answer:

1. Diamond

2. The Image to the far right. It's rice I believe.

Explanation:

A lustrous material is a material that shine or usually reflect light. Fire isn't a material and the powder is dull and doesn't shine. In this case the diamond is a lustrous material and not a metal.

An edible substance is anything thing that can be consumed as food. Soap is consumable and the blue picture is definetly not either so we conclude that the rice is the edible option.

Answer:

The element formed when a radioactive element undergoes radioactive decay. The latter is called the parent. The daughter may or may not be radioactive.

Explanation:

hope this helps

Answer: the answer is B!

Explanation:

S and p’s are valence electrons and if added, there is 7 in total !

From a community of 10,000, the total gas production would be approximately 252.92 m3 of carbon dioxide (CO2) and 697.24 m3 of methane (CH4) from the rapidly decomposable fraction of the municipal solid waste.

To determine the total gas production of carbon dioxide (CO2) and methane (CH4) from the rapidly decomposable fraction of municipal solid waste (MSW), we need to calculate the mass of the decomposable fraction and then convert it to volumes of CO2 and CH4 based on their densities.

Given:

Community population: 10,000

Rapidly decomposable fraction: 5% of MSW

Density of CO2: 1.9768 kg/m3

Density of CH4: 0.7167 kg/m3

Let's assume the MSW per capita is 1 kg (for illustrative purposes).

Step 1: Calculate the mass of the rapidly decomposable fraction of MSW.

Total MSW = 10,000 kg

Mass of decomposable fraction = 10,000 kg × 0.05 = 500 kg

Step 2: Calculate the volumes of CO2 and CH4 produced.

Mass of CO2 produced = 500 kg

Mass of CH4 produced = 500 kg

Step 3: Convert the masses of CO2 and CH4 to volumes.

Volume of CO2 produced = 500 kg / 1.9768 kg/m3 ≈ 252.92 m3

Volume of CH4 produced = 500 kg / 0.7167 kg/m3 ≈ 697.24 m3

Therefore, from a community of 10,000, the total gas production would be approximately 252.92 m3 of carbon dioxide (CO2) and 697.24 m3 of methane (CH4) from the rapidly decomposable fraction of the municipal solid waste.

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A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

The pair of substances that are most likely to form a homogeneous solution is B. H2O and CH3OH. A homogeneous mixture is one in which the components are evenly distributed throughout the mixture. These types of solutions have uniform properties and the same composition throughout.A heterogeneous mixture is one in which the components are not evenly distributed. This means that the mixture has distinct regions or phases that are visibly different from one another. The following are the most likely pairs of substances to form a homogeneous solution:A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

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Answer:

search it

Explanation:

The overall objective of adsorption is to utilize the properties of adsorbents and adsorbates to achieve desired outcomes, such as purification, separation, catalysis, or storage, by exploiting the interactions occurring at the adsorbent-adsorbate interface.

Example of Chemical Adsorption:

Adsorption of hydrogen on a metal catalyst surface during hydrogenation reactions.

Adsorption of gas molecules on the surface of a solid metal oxide catalyst during oxidation reactions.

Adsorption of pollutants on activated carbon in water or air purification systems.

Adsorption of dyes on the surface of a solid support in dye-sensitized solar cells.

Adsorption of toxins or drugs on activated charcoal for detoxification or medical purposes.

Example of Physical Adsorption:

Adsorption of nitrogen gas on the surface of activated carbon in gas storage applications.

Adsorption of water molecules on the surface of silica gel in humidity control systems.

Adsorption of volatile organic compounds (VOCs) on zeolite materials for odor control.

Adsorption of gases on the surface of metal-organic frameworks (MOFs) for gas separation processes.

Adsorption of solutes on the surface of silica particles in liquid chromatography for separation and purification purposes.

The objective of adsorption can vary depending on the application, but some common objectives include:

Removal of pollutants or contaminants from air, water, or other environments.

Separation and purification of specific components from a mixture.

Adsorption of gases for storage or transportation purposes.

Catalytic reactions where adsorbed species react on the surface of a catalyst.

Surface modification or functionalization of materials for specific applications.

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The composition in at% Ag of the alloy is 85.2%.

To calculate the atomic percentage (at%) of Ag in the alloy,

we need to know the atomic weights of both Ag and Cu.

The atomic weight of Ag is 107.87 g/mol, while the atomic weight of Cu is 63.55 g/mol.

First, we can calculate the weight percentage of Cu in the alloy:

90.6 wt% Ag + x wt% Cu = 100 wt%

x wt% Cu = 100 wt% - 90.6 wt% Ag = 9.4 wt% Cu

Next, we can convert the weight percentage of Cu to the atomic percentage of Cu:

9.4 wt% Cu * (1 mol Cu/63.55 g) * (\(6.02\times10^{23 }\)atoms/mol) = 8.36 x \(10^{22}\) atoms Cu

100 wt% - 9.4 wt% = 90.6 wt% Ag

90.6 wt% Ag * (1 mol Ag/107.87 g) * (6.02 x \(10^{23}\) atoms/mol) = 4.81 x \(10^{23}\)atoms Ag

Now we can calculate the atomic percentage of Ag:

at% Ag = (4.81 x \(10^{23}\) atoms Ag) / (4.81 x \(10^{23}\) atoms Ag + 8.36 x \(10^{22}\)atoms Cu) * 100%

at% Ag = 85.2%

Therefore, the composition in at% Ag of the alloy is 85.2%. Rounded to the nearest 0.1 at%, the answer is 85.2 at% Ag.

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Answer:

▪ Will it make a difference if we swap the anode and cathode in electroplating?

➢ If we interchange the two terminals after electroplating then the ions deposited on the plate will move again towards their original position.

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Explanation:

if we change the two terminals after electroplatingthen the ions deposited on the plate will move again towards their original position...

Answer:

hi Da kiran wher r u da come fast Da

Answer:

Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue[5] liquid that is slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use, and in higher concentrations for industrial use.

Calculate the number of days' supply by subtracting the total of drops given by the quantity of drops necessary for each day's dose, with a conversion ratio of 20 drips per milliliter.

The production is indeed a ratio of the level input amount of each ingredient, and the functional form is represented as Q = methods calculate, L, P, H). Of fact, not all firms need the same production parameters or input quantities.

Instead, the ending inventory will need to be added to the cost of products sold and subtracted from the beginning inventory in order to determine the total purchases. Most businesses will keep track of their supplier purchases, therefore this estimate may not be accurate.

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Answer: I go search some information

Explanation:I come back with a answer

Out of the options listed, "Water vapor, carbon dioxide, and other volatile organic compounds (VOCs)" would not be considered a material stream exiting the roaster.

A material stream is a flow of a physical substance, such as a solid, liquid, or gas, that enters and exits a system or process. In the context of a chemical or process plant, a material stream is a stream of raw materials, intermediate products, or final products that are being produced, transported, or processed.

To perform a mass balance on a coffee roaster, you would consider all the material streams that enter and exit the system. These are gaseous emissions resulting from the roasting process and are not a physical material. The other options, "Spent coffee grounds," "Chaff," and "Roasted coffee beans" are physical materials that can be weighed and measured, and would be considered as material streams exiting the roaster.

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Answer:

Explanation:

The average speed can be found by using the formula

\(v = \frac{d}{t} \\ \)

where

d is the distance

t is the time taken

So we have

\(a = \frac{24}{2} \\ \)

We have the final answer as

Hope this helps you

It's been a while since I've taken Chemistry but here's what I know:

There are small, weak bonds that form between water molecules. These bonds make it so liquid molecules (water, in this example) cannot move as freely as a gas, but their bonds aren't nearly as strong as a solid. The bonds are formed when a hydrogen atom is attracted to an oxygen atom (because they have an opposite charge). This bond plus the gas molecules hitting the water causes surface tension.

(Let me know if this is wrong and I hope you have a lovely day!!)

Answer:

So the answer to the question “What is the mass concentration of hydrogen chloride in 2.0-molar hydrochloric acid?” is 73 grams per liter.

1.905 M is the concentration in m (moles/l) of a solution that is 12.0% by weight of nitric acid.

To calculate the concentration in moles per liter (M) of a 12.0% by weight nitric acid (HNO₃) solution, follow these steps:
1. Determine the molecular weight of HNO₃:
HNO₃ = 1 (H) + 14 (N) + 3 × 16 (O) = 1 + 14 + 48 = 63 g/mol
2. Convert the percentage concentration to a mass concentration:
12.0% by weight means that there are 12.0 g of HNO₃ in 100 g of solution.
3. Calculate the moles of HNO₃ in the 100 g solution:
moles = mass / molecular weight
moles = 12.0 g / 63 g/mol = 0.1905 mol
4. Determine the volume of the solution:
Assume that the density of the solution is close to that of water, which is 1 g/mL.
Since there are 100 g of solution, the volume would be approximately 100 mL or 0.1 L.
5. Calculate the concentration in moles per liter (M):
concentration (M) = moles / volume
concentration (M) = 0.1905 mol / 0.1 L = 1.905 M
The concentration of the solution is approximately 1.905 M.

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Answer:

How do one confess feelings to her if he is introvert?

Answer:

A. Distance = 18 m

    time = 2 hr

    speed = 9 m/hr

Explanation:

Speed is the same thing as velocity.

Velocity = distance/time

18m/2hr = 9m/hr

For choice B, the numbers are right, but the units are mixed (minutes were changed to hours)

There are 1.077 moles of argon gas collected at a pressure of 1.14 atm, a temperature of 26.0 °c, and a volume of 23.2 L.

To find the number of moles of argon gas in the sample, we can use the ideal gas law equation PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature. We are given the values for pressure, volume, and temperature, and we can use the value of R as 0.08206 L·atm/mol·K. We can rearrange the equation to solve for n:

n = PV/RT.

First, we need to convert the temperature from degrees Celsius to Kelvin:

T = 26.0 + 273.15 = 299.15 K

Then, we can plug in the values into the equation:

n = (1.14 atm)(23.2 L) / (0.08206 L·atm/mol·K)(299.15 K)

n = 1.077 mol

Therefore, there are 1.077 moles of argon gas in the sample.

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Answer:75 miles

Explanation:

bruh

Answer:

75

Explanation:

just because

Answer:

3,938.22

Explanation:

(correct me if I'm wrong)