will give brainliest for correct answer!!!


Which particles are gained and lost during a redox reaction?

A) electrons
B) protons
C) neutrons
D) positrons

The white ring of the NH₄Cl is formed at 24.3cm far from Hcl end.

What is grahams law of diffusion?

According to Graham's law, a gas's rate of diffusion or effusion is inversely related to the square root of its molar mass.

What is solid?

Solid ground is a substance that is hard, firm, or compact. having relative firmness, particle coherence, or form permanence as matter that is not liquid or gaseous: solid particles suspended in a liquid. regarding such a matter: Ice is water when it's solid.

According to grahams law of diffusion, rate of diffusion is inversely propotional to square root of its density and molar mass.

r ∝ 1/ \(\sqrt{d}\) and γ ∝ 1/ \(\sqrt{M}\)

γ NH₃/ γ HCl = \(\sqrt{M HCl / M NH3}\) = \(\sqrt{36.5/17}\)
1.465/ 1

given that

tube length = 60.0cm

We known that rate = distance / time

Time = distance / rate

let X be the distance travelled by HCl and

60-X be the distance travelled by NH₃

Time taken for HCl = Distance travelled by HCl/ rate of diffusion of Hcl

Time taken for NH₃ =  Distance travelled by NH₃ / rate of diffusion of Hcl

Since both gases are introduced at the same time and travelled same time

distance travelled by HCl (dHCl) / rate of diffusion of HCl = distance travelled by NH₃  ( dNH₃) / rate of diffusion of NH₃ (r NH₃ )

γ NH₃ / γ HCl = d NH₃ / d HCl  = 60-X /X = 1.465/1

60-X = 1.465X

60=2.465X

X=60/ 2.465= 24.34 cm

Therefore, white ring of the NH₄Cl is formed at 24.3cm far from Hcl end.

Learn more about grahams law of diffusion from the given link.

https://brainly.com/question/22359712

#SPJ4

The percentage yield for the reaction between \(Li_3 N_{(s)}\) and \(H_2\), which resulted in the production of \(LiH_{(s)}\), is 25%.

To calculate the per cent yield, we multiply the theoretical yield by 100.

There can be a significant difference in the theoretical and actual yield.

Li₃N(s) + 2 H₂(g) ⇄ LiNH₂(s) + 2 LiH(s)

\(70 g Li_3N *\frac{ 1 mol Li_3 N}{35 g} = 2 mol Li_3N\\2 mol Li_3N * \frac{2 mol LiH}{1 mol Li_3N} \\4 mol LiH * \frac{7.05 g LiH}{ 1mol LiH} = 28.20\)

Percentage yield = \(\frac{Actual Yield}{Theoretical Yield} * 100\)

\(\frac{8.0g}{28.20 g}\) ≅ 25

From the above calculation, we found that the per cent yield is closest to 25%.

Learn more about per cent yield here:

brainly.com/question/17042787

#SPJ12

Your question is incomplete, the probable question is:

Li₃N(s) + 2 H₂(g) ⇄ LiNH₂(s) + 2 LiH(s) ΔH° = -192 kJ/molrxn Because pure H₂ is a hazardous substance, safer and more cost-effective techniques to store it as a solid for shipping purposes have been developed. One such method is the reaction represented above, which occurs at 200 °C. When 70 g of \(Li_3N_{(s)}\) (molar mass 35 g/mol) reacts with excess H₂(g), 8.0 g of LiH(s) is produced. The per cent yield is closest to:

Answer:

Autumn is one of the four basic seasons of the year in the temperate climate zone. It is characterized by moderate air temperatures with a decreasing daily average, and relatively high annual precipitation. The climate autumn is the period of the year in which the average daily air temperature ranges around 10° C.

Astronomical fall begins at the fall equinox and lasts until the winter solstice, which roughly means in the southern hemisphere between March 23 and June 22 (sometimes these dates are a day earlier or a day later, and in a leap year they may be additionally retracted one day). During astronomical autumn, the day time of the day is shorter than the night time, and moreover, with each successive day of the day it decreases and night increases.

Density =mass/volume

=6/3

=2

Answer:

Study Island:

The answer is...

C.  The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.

Explanation:

The test variable (independent variable) and the outcome variable (dependent variable) have no effect on each other. Hence, option C is correct.

The independent variable can be altered, manipulated and changed in an experimental study.

Researchers often measure independent and dependent variables in studies to test cause-and-effect relationships.

The independent variable is the reason or cause. Its value is independent of other variables.

The dependent variable is the outcome whose values depend on changes in the independent variable.

Hence, option C is correct.

Learn more about the independent variable here:

https://brainly.com/question/1479694

#SPJ2

The statement “The products obtained by the acid-catalyzed hydration of 1-methylcyclohexene and methylenecyclohexene are identical” is not true.

Acid-catalyzed hydration is a chemical reaction that transforms an alkene to an alcohol by adding water.

For instance, in the following reaction, 2-methylpropene reacts with water, with the aid of sulfuric acid, to give the alcohol tert-butyl alcohol.

In general, acid-catalyzed hydration of an alkene takes place via a mechanism known as a Markovnikov addition. When an unsymmetrical alkene is hydrated using H2SO4 and H2O, a mixture of products is usually produced. This is because of the differing stabilities of the carbocation intermediates formed during the reaction. This is referred to as carbocation rearrangement.

A simple example of carbocation rearrangement can be seen in the hydration of 1-methylcyclohexene. It produces two isomeric products: 1-methylcyclohexanol and 3-methylcyclohexanol.

Methylcyclohexene undergoes acid-catalyzed hydration to form a mixture of 1-methylcyclohexanol and 3-methylcyclohexanol. Methylenecyclohexene, on the other hand, yields only cyclohexanol during hydration.

Thus, the given statement is false.

To learn more about Markovnikov addition :

https://brainly.com/question/21496002

#SPJ11

Answer:

becose of the dark in the atmosphere it covers the sun

Explanation:

il explain in comment if you brainly me

It would take 345.7 minutes in a plate.

Justification: It serves as an illustration of Faraday's First Law of Electrolysis.

According to this, the quantity of material deposited is directly inversely related to the quantity of voltage transmitted.

W=Zit, =E/96500, = E it/96500, and E=58.7 (molar mass of Ni)/2 (charge on Ni)=29.3 t=W96500/E I = 29.6x96500/29.3x4.7, = 20742.1 sec, = 345.7 min.

It is the fifth most prevalent element on earth and is widely distributed throughout the crust and core of the planet. Along with iron, nickel is a frequent metal in meteorites and is also present in trace amounts in saltwater, plants, and animals.

To know more about Nickel visit:

https://brainly.com/question/3542561

#SPJ4

The ideal gas law can be used to calculate two other quantities through rearrangement: molar mass and density.

The ideal gas law, PV = nRT, is a generalization of Boyle's law, Charles's law, Avogadro's law, and Gay-Lussac's law. It combines the properties of a gas into one unified equation.

This means that if you know the value of three of the variables, you can solve for the fourth variable. The ideal gas law can be rearranged into different forms to calculate a variety of quantities. Two such calculations include the molar mass of a gas and the density of a gas.

The Molar Mass of a Gas:

The molar mass of a gas can be calculated by rearranging the ideal gas law to solve for the mass of a single molecule. Once the mass of a single molecule is known, the molar mass can be calculated using Avogadro's number. Molar mass is important for understanding the chemical properties of a gas.

The density of a gas:

The density of a gas can be calculated by rearranging the ideal gas law to solve for density. Density is the mass of a substance per unit volume. By calculating the density of a gas, you can determine its mass at a given volume and temperature. This can be useful for understanding the behavior of a gas under different conditions.

Learn more about ideal gas law

https://brainly.com/question/30458409

#SPJ11

Answer:

6.05 g

Explanation:

Use the density to convert the volume to a weight.

(5.00 mL) × (1.21 g/mL) = 6.05 g liquid plant food

You will need 6.05 g liquid plant food.

the vital capacity is the maximum amount of gas that can be displaced (expired) from the lung. The vital capacity is the maximum amount of air a person can exhale after taking a deep breath in.

It represents the total amount of gas that can be displaced from the lungs and is a measure of the lung's ability to move air in and out. The vital capacity can be affected by various factors such as age, sex, height, weight, and health status.

Measuring vital capacity is an important part of pulmonary function testing and is often used to assess lung function and diagnose respiratory disorders. It can also be used to monitor disease progression or response to treatment.

To measure vital capacity, a person is asked to take a deep breath in and then exhale as forcefully and completely as possible into a spirometer, a device that measures lung function.

The vital capacity is calculated by subtracting the volume of air remaining in the lungs after a normal exhalation, called the residual volume, from the total lung capacity, which is the maximum amount of air the lungs can hold.

In summary, the vital capacity is the maximum amount of gas that can be displaced from the lung and is an important measure of lung function. It can be affected by various factors and is measured using a spirometer as part of pulmonary function testing.

Know more about total lung capacity here:

https://brainly.com/question/30750833

#SPJ11

Answer:

The answer is A

Explanation:

My teacher gave me the answer before the test that we took on 11/12/2020

Hope this helps anyone else who has the same question.

The halogens have similar properties, the correct option is A.

Halogens are the group 17th compound of the periodic table, It consists of elements like Fluorine(F), Chlorine(Cl), Bromine(Br), and Lodine(I).

The halogens have the following properties.

They all react with hydrogen to create acids.

All of them are fairly harmful.

Salts are easily formed when they react with metals.

Their outer shell contains seven valence electrons.

They are electronegative and very reactive.

Low melting and boiling points characterize the halogens. This is a common characteristic of non-metals.

As you move lower in the group, the melting and boiling points then rise.

The elements have different atomic mass, atomic radius, and a different number of protons.

They are grouped together because they all have similar properties.

To know more about Halogens

https://brainly.com/question/11156152

#SPJ6

Answer:The answer is C:two or more forms of an atom that contain different numbers of neutrons. An isotope is when there are different forms of an atom, in terms of neutrons. Not to be confused with cations or anions, which are atoms with a difference of electrons or protons, making them charged.

Explanation: I took chemistry in 6th grade.

Answer: (although the question does not sate whether if you separate them physically or through energy. so i did both)

1. can be separated (When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen)

2. can be separated, but through electrolysis, fiscally moving a crane to generate electricity to separate the molecules

3. Most solid particles, composed of diamagnetic or weak paramagnetic materials, cannot be extracted by a conventional magnetic separator. physically cannot be separated. but through heat yes

4. but there is a catch: doing so requires energy. ... If energy from coal were applied to drive the decomposition reaction, more CO2 would be released than consumed, because no process is perfectly efficient. so it cant be separated physically

5. it can be separated but it needs energy physically cannot be separated.

Explanation:

Mole ratio is the conversion factor used to convert from moles of substance A to moles of substance B (option C).

Mole ratio is a ratio of the number of moles of one substance to the number of moles of another substance in a balanced chemical equation.

It allows us to convert between moles of different substances involved in a chemical reaction. Molar mass (A), Avogadro's number (B), and the mass of 1 mole (D) can be used to convert between moles and other units, such as mass and number of particles.

Learn about Mole ratio here https://brainly.com/question/30632038

#SPJ1

Considering a low-mass atom, such as helium or lithium, the possible atomic terms for the electron configuration np1nd1 would be 2P1 and 2D1.

The term that is likely to lie lowest in energy would be 2P1, as it has a lower angular momentum quantum number (l=1) compared to 2D1 (l=2), resulting in a lower energy state.

For n = 2 and l = 1, the possible values of S and L are 1/2 and 1, respectively. Thus, the term notation for np1 is ^2P.

For n = 2 and l = 2, the possible values of S and L are 1/2 and 2, respectively. Thus, the term notation for nd1 is ^2D.

Combining the terms ^2P and ^2D, we get the possible atomic terms as ^2P^2D.

Read more about Low-mass atom.

https://brainly.com/question/10413648

#SPJ11

Explanation:

Winter 4

Season when the northern hemisphere is tilted away from the sun.

Summer 2

Season when the northern hemisphere is tilted towards the sun.

Spring 1

Season when the northern hemisphere is neither tilted towards nor away from the sun; days getting longer and warmer.

Fall 3

Season in the northern hemisphere when the Earth is neither tilted towards nor away from the sun; days getting shorter and cooler.

The balanced ionic equation for the oxidation reduction reaction between Al(s) and Sn2+(aq) is 3 Al(s) + 2 Sn2+ (aq) → 3 Al3+(aq) + 2 Sn(s)  

what is redox reaction balancing?

To counteract this, we will separately write each oxidation and reduction reaction and explicitly mention the quantity of electrons in each. Half reactions are what are known as the oxidation and reduction processes separately.

Als) → A13+ (aq) + 3 e-

Sn2+ (aq) + 2e- → Sn(s)

3 Al(s) + 2 Sn2+ (aq) → 3 Al3+(aq) + 2 Sn(s)

The half reactions will then be combined into a full reaction, which should then be balanced, by doing multiples of each reaction until the quantity of electrons on each side totally cancels. The half reaction method is the name for this technique for redox reaction balancing.

To learn more about oxidation reduction reaction

https://brainly.com/question/13892498

#SPJ1

Answer:

Plants

Explanation:

The mass percentage of sugar in the sweet tea is 10%

From the question,

We are to determine the mass percentage of sugar in the sweet tea

\(Mass\ percentage\ of\ sugar\ in\ the\ sweet\ tea = \frac{Mass\ of\ sugar\ in\ the\ solution}{Mass\ of\ the\ solution} \times 100\%\)

Mass of sugar in the solution = 20 g

Mass of the solution = 20g + 180g = 200g

\(Mass\ percentage\ of\ sugar\ in\ the\ sweet\ tea = \frac{20}{200} \times 100\%\)

\(Mass\ percentage\ of\ sugar\ in\ the\ sweet\ tea = \frac{20}{2} \%\)

∴ Mass percentage of sugar in the sweet tea = 10%

Hence, the mass percentage of sugar in the sweet tea is 10%

Learn more here: https://brainly.com/question/13896694

Explanation:

Based on temperature: tropical (warm), polar (cold), arctic (extremely cold). Naming convention for air masses: A small letter (c, m) indicates the moist content followed by a capital letter (T, P, A) to represent temperature.

The Continental tropical air masses are represented by the letters C and T.

Air Mass:

It is defined as the volume of air that is distributed in thousands of square miles and adapts to the characteristics of the surface.

Air mass is based on the temperature and humidity in the air. There are 4 types of air masses arctic, tropical, polar, and equatorial.

Continental tropical (cT), is a type of air mass. They are very hot and dry. They formed during the summer over the  Desert Southwest and northern Mexico.

Therefore, the Continental tropical air masses are represented by the letters c and T.

To know more about Continental tropical (cT):

https://brainly.com/question/18257713

In the lesson, we read that something often lead to confusion and embarrassment, and even potential legal jeopardy therefore the sentences which correctly tells you what that "something" is include the following:

This is referred to as a change in mental status in which a person is not able to think with his or her usual level of clarity.

This is usually caused by different factors such as not listening or writing in a clear manner which could lead to confusion and legal jeopardy where possible.

Read more about Confusion here https://brainly.com/question/29479406

#SPJ1

A type of biotechnology called artificial selection is deliberately breeding plants or animals to promote or eliminate specific desirable qualities. Crops may be carefully bred by farmers, for instance, to increase their resistance to pests or drought.

Artificial selection is a type of biotechnology that involves selectively breeding plants or animals to enhance or suppress certain desirable traits.

For example, farmers may selectively breed crops to make them resistant to pests or droughts.

One benefit of artificial selection for individuals is that it can lead to higher crop yields, which can result in increased profits for farmers. However, one risk of artificial selection for individuals is that it can lead to the loss of genetic diversity in crops, which can make them more vulnerable to disease outbreaks.

One benefit for society is that artificial selection can help to alleviate hunger and food shortages by producing more food. However, one risk for society is that artificial selection can lead to the creation of monocultures, which are vulnerable to pests and disease outbreaks.

One benefit for the environment is that artificial selection can lead to the production of crops that require fewer pesticides and herbicides, which can reduce pollution. However, one risk for the environment is that artificial selection can lead to the loss of biodiversity, which can negatively impact ecosystems.

Attached is an image of a farmer selectively breeding crops.

For more such questions on biotechnology, click on:

https://brainly.com/question/29772046

#SPJ11

the height of a theoretical plate (HETP) of species A is 1.12 cm/plate.

To calculate the height of a theoretical plate (HETP) of species A, we first need to calculate the number of plates. The formula for the number of plates is:

N = (tR/W1/2)^2

Where N is the number of plates, tR is the retention time, and W1/2 is the width at half height.

Using the values given in the table, we can calculate the number of plates for each compound:

Unretained Species: N = (4.21/0.140)^2 = 110.26 plates
Compound A: N = (5.26/0.165)^2 = 89.56 plates
Compound B: N = (8.22/0.210)^2 = 137.72 plates

Next, we can calculate the HETP using the formula:

HETP = L/N

Where L is the length of the column (100.00 cm).

Using the number of plates calculated above, we can find the HETP for species A:

HETP = 100.00/89.56 = 1.12 cm/plate

Therefore, the height of a theoretical plate (HETP) of species A is 1.12 cm/plate.

learn more about Species here

https://brainly.com/question/29330415

#SPJ11

Answer:

Physical

Explanation:

because the erosion of the canyon did not change any of the chemical attributes of the rock it only changed the appearance. it may have changed the color which is an example of chemical properties but in this case, it is physical. But in other cases, you would refer to this type of weathering as mechanical weathering.

Answer:

it physical

Explanation:

because it moving

Answer: A change in color is not always a chemical change. If one were to change the color of a substance in a non-chemical reaction scenario, such as painting a car, the change is physical and not chemical.

Solid → Liquid: Melting

Solid → Gas: Sublimation

Liquid → Gas: Vaporization

Gas → Liquid: Condensation

Explanation:

(CH3)2NH2+of PKb=10.77 and acetate ion of PKb =12.04

Kb of acetate ion can be calculated by

\(\begin{align} K_{b} &= \frac{K_{w}}{K_{a}}\\ &= \frac{1\times 10^{-14}}{1\times10^{-2}} \\ &= 9.09 \times 10^{-13} \end{align}\)\(Kb=\frac{Kw}{Ka} \\\)

 =1×10^−2/1×10^−14

=9.09x 10^-13

we have the Kb value, we can now compute the pKb value using the formula below

​PKb= -logKb

​PKb=-log(9.09x 10^-13)

​PKb=12.04

The Kb of (CH3)2NH2+ can be calculated as

\(\begin{align} K_{b} &= \frac{K_{w}}{K_{a}}\\ &= \frac{1\times 10^{-14}}{1\times10^{-2}} \\ &= 9.09 \times 10^{-13} \end{align}\)\(Kb=\frac{Kw}{Ka} \\\)

=1×10^−14/5.9x10^−4

=1.7x10^-11

we have the Kb value, we can now compute the pKb value using the formula below

​PKb= -logKb

​PKb=-log(1.7x 10^-11)

PKb=10.77

learn more about pH here

https://brainly.com/question/22390063

#SPJ4