which is the largest atom in group IV?

The Intercept of enriching section operating line is 0.37.

Distillation is used to split liquids from nonvolatile solids, as inside the separation of alcoholic liquors from fermented substances, or inside the separation of two or extra beverages having specific boiling factors, as in the separation of gasoline, kerosene, and lubricating oil from crude oil.

Distillation contains partial reboiler and total condenser

Feed is bubble point

Benzene and toluene is fed

xf = 0.50

xd = 0.95

xb = 0.05

The equilibrium data is for more volatile component (benzene)

Reflux is twice of  the minimum

R = 1.5(Rmin)

R = 1.5(1.04545)

R = 1.568175

Intercept of enriching section operating line

= (xd/(R+1) ) = (0.95) /(1.568175+1) = 0.37

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distillation unit consists of partial reboiler; column with seven equilibrium plates_ and total condenser. The feed is 50 mol% mixture of benzene and toluene It is desired to produce distillate product containing 96% benzene when operating at I01 kPa. Equilibrium data of the binary mixture at [0[ kPa is given below in mole fraction of benzene: 0.2[ 0.37 051 0.64 0.72 0.79 0.86 0.91 0.96 0.98 Sketch the distillation process and label the streams. Clearly state any assumptions that YOu use With saturated liquid feed t0 the fifth plate from the top, calculate The minimum reflux ratio (LID)n The bottoms product composition using reflux ratio twice the minimum 3 . Moles of product per I00 moles of feed Repeat part (b) for saturated vapor feed fed to the fifth plate from the top With saturated vapor feed fed to the reboiler and reflux (LIV) of 0.9 calculate Bottoms product composition 2. Moles of products per [00 moles of feed

A galvanic anode that would NOT be used to provide CP to steel is:.D) Chromium is not commonly used as a galvanic anode for the cathodic protection (CP) of steel. Magnesium, aluminum, and zinc are commonly used galvanic anodes for the CP of steel.

A galvanic anode is a type of sacrificial anode that is used to protect metal structures from corrosion. It is made from a more active metal than the metal being protected, such as zinc, aluminum, or magnesium. When the anode is electrically connected to the metal being protected and immersed in an electrolyte, such as seawater, a galvanic cell is created. This results in the anode corroding instead of the protected metal. As the anode corrodes, it releases electrons that flow through the electrolyte to the metal being protected, preventing it from corroding. Galvanic anodes are commonly used in pipelines, ships, and offshore structures to prevent corrosion.

Galvanic anodes are commonly used as a form of cathodic protection (CP) to protect metallic structures from corrosion. The anode material is more reactive than the metal being protected, and when connected to the structure through a conductive medium, it corrodes preferentially to the protected metal, thereby providing CP.

Magnesium, aluminum, and zinc are all commonly used as galvanic anodes for CP because they are more reactive than steel and corrode preferentially to it. However, chromium is not typically used as a galvanic anode for CP because it is less reactive than steel and would not provide sufficient protection. Instead, chromium is often used as a passive protective coating on steel, as it forms a thin, stable oxide layer that helps to prevent corrosion.

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The heat of combustion of the acetylene is;  -1253.3 kJ/mol

The heat of combustion of acetylene (C2H2) is the amount of heat energy released when acetylene is burned in excess oxygen. The heat of combustion is a measure of the energy content of a substance and is usually expressed in units of energy per unit of substance, such as joules per mole (J/mol) or calories per gram (cal/g).

The heat of combustion is;

[2(-393.5) + (-241.6)] - [-226.7]

= -1253.3 kJ/mol

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Answer:

there the start of the food chain for little fish and other fish that are bigger and keep the ocean chain moveing. hope this helps?

Oxyfuel gas process is the most popular method used to cut metals. It involves burning oxygen and gas to melt the metal. The molten metal is then blown away by the compressed gas, resulting in a clean cut. The process is used on metals such as mild steel, cast iron, and wrought iron, to name a few.

Mild steel is the most popular type of metal cut with oxyfuel gas processes. The reason behind this is that it is the least expensive, making it perfect for low-cost jobs. The metal is also easy to weld, making it the go-to material for a wide range of construction applications. Cast iron is another type of metal that is commonly cut using oxyfuel gas processes. It is widely used in engine blocks, pipe fittings, and hydraulic equipment.

Finally, wrought iron is another type of metal that is commonly cut using oxyfuel gas processes. This metal is widely used in fences, gates, railings, and other ornamental structures. In conclusion, the oxyfuel gas process can cut a wide range of metals such as mild steel, cast iron, and wrought iron.

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Answer:

Diazanium sulfate is the correct answer.

Explanation:

Hope this helped Mark BRAINLIEST!!

The volume needed to make 1.98 M of the solution is 2.12L

Molarity of a given solution is defined as the total number of moles of solute per litre of solution. One molar is the molarity of a solution where one gram of solute is dissolved in a litre of solution. As we know, in a solution, the solvent and solute blend to form a solution, hence, the total volume of the solution is taken.

Given,

Molarity = 1.98m

Moles = 4.2 mol

Molarity = number of moles of solute / volume of solution in L

Volume = moles / molarity

= 4.2 / 1.98

= 2.12 L

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Answer:

True

Explanation:

The greenhouse effect is a natural process that occurs when certain gases in the atmosphere, such as carbon dioxide and water vapor, trap heat from the sun. This keeps the Earth's temperature within a range that is suitable for life. However, an increase in the amount of greenhouse gases, such as from human activities like burning fossil fuels, can intensify the greenhouse effect and lead to global warming. This warming can have a range of impacts on the environment, such as melting ice caps, rising sea levels, and more frequent and severe weather events.

Their bonds are polar because every oxygen has a delta - and every carbon has a delta +. an element with the chemical symbol C and indeed the isotope 6 Tetravalent, nonmetallic, and it.

Metals are melted down using coke & charcoal, both of which are impure forms of carbon. It is especially important there in steel and aluminium industries. Graphite can be found in electric motor brushes, furnace linings, and pencil leads. Activated charcoal is used for filtering and purification.

poisonous nature of carbon. Thousands of fatalities occur each year in North America as a result of the odourless gas carbon monoxide. Inhaling carbon monoxide is exceedingly dangerous. It is the main cause of poisoning deaths in the country.

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The balanced equation of the half-reaction in acidic conditions is:

The balanced equation of the half-reaction is determined as follows:

Half-reaction: NO₃⁻ → NO

Add electrons to the left-hand side to balance the charges and also add water to the right-hand side to balance the oxygen atoms:

NO₃⁻ + 4H⁺ + 3 e⁻ → NO + 2 H₂O

The reaction occurs in an acidic solution, so H⁺ ions are added to balance the charges.

NO₃⁻ (aq) + 4 H⁺ (aq) + 3 e- → NO (g) + 2 H₂O (l)

Therefore, the half-reaction is balanced and the phases are given.

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Divide the number of moles by the molarity in units of moles per liter to get the volume of a solution in liters given the number of moles and molarity.

Given that a solution consists of both a solute and a solvent, its total volume is equal to the sum of the volumes of both the solute and the solvent it contains.

Given the number of moles and molarity, get the volume of a solution in liters by dividing the number of moles by the molarity in units of moles per liter. A solution with 6.0 moles and a molarity of 3.0 moles per liter, for instance, has a volume of 2.0 moles per liter.

The following is the formula to determine a solution's percent volume/volume:

%U/v. Volume of solute/Volume of solution * 100

Determine the required percent v/v

0. 50 m /67 * 100

=7.462

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Answer:1.2L

Explanation:The Correct Answer

The correct chemical formula for barium nitride is: b. Ba3N2

The chemical formula for barium nitride can be determined by balancing the charges of the ions involved. Barium ions carry a 2+ charge, while nitrogen ions carry a 3- charge.

To balance the charges, we need two barium ions (2 × 2+ = 4+) for every three nitrogen ions (3 × 3- = 9-). The positive and negative charges must cancel each other out in the compound.

Therefore, the correct chemical formula for barium nitride is: b. Ba3N2

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Speed measures how fast an object is moving through a distance and it is calculated by the formula  S = d t , where S stands for speed d stands for distance and t stands for time.

Speed can be defined as the rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered.

Types of speed are :

Therefore the formula for speed is S =dt, S stand for speed D stand for distance and T  stand for time.

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Answer:

A.  Sound travels slower in air because of the large distance between air particles

Explanation:

Sound is a mechanical wave that requires a medium for its propagation. Without a medium, sound cannot go through easily or readily. This implies that sound cannot be propagated through a vacuum.

The answer is Water is produced.

Answer:

8.68 L is the new volume

Explanation:

You use Boyle's law for this.

\(P_{1}V_{1}=P_{2}V_{2}\)

\(P_{1}\) = first pressure

\(P_{2}\) = second pressure

\(V_{1}\) = first volume

\(V_{2}\) = second volume

Convert pressure from atm to mmHg (use same units):

5.97 x 760 = 4537.2 -> 4.54 x 10³

...maintain 3 significant figures in calculation, and round as needed...

(4.54 x 10³ mmHg)(2.79 L) = (1460 mmHg)(\(V_{2}\))

(4.54 x 10³ mmHg)(2.79 L) / (1460 mmHg) = \(V_{2}\) = 8.68 L

Hope this helps :)

Answer:

plants or The Cell Theory

Explanation:

1) The dream of Mendeleev concerned the arrangement of the elements by mass

2) Periodicity is the changing properties of the elements

3)

Antoine Lavoisier - Arranged the elements by their properties

Johann Döbereiner - Arranged the elements into triads

John Newlands - Arranges the elements according to the order of increasing atomic mass

We define the periodic table as the arrangement of the elements in order of increasing atomic numbers. We know can see that several attempts have been made at the systematization of the elements and the approaches to the problem have taken different dimensions. In a dream, Mendeleev saw the elements line up in order of atomic masses and there was a visible pattern.

The term periodicity has to do with the regular repeating property of the elements and this can be seen when we follow the properties of the elements as they change down the group and across the period.

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Answer:

(A) It increases in temperature

11.87 g of CO(g) is required to completely react with 22.55 g Fe₂O₃(s) to produce 15.32 g Fe(s). The percent yield of the reaction is 97.15%.

The balanced equation for the reaction between CO(g) and Fe₂O₃(s) is:

Fe₂O₃(s) + 3 CO(g) -> 2 Fe(s) + 3 CO₂( g)

To determine how much CO is required to completely react with 22.55 g of Fe2O3, we need to use the stoichiometry of the reaction.

From the balanced equation, we know that for every 1 mole of Fe₂O₃(s) that reacts, 3 moles of CO(g) are consumed. To convert mass to moles, we use the molar mass of Fe₂O₃(s), which is 159.69 g/mol.

22.55 g Fe2O3 / 159.69 g/mol = 0.1412 moles of Fe2O3

From the balanced equation we know that for every 1 mole of Fe₂O₃(s), 3 moles of CO(g) is required, so we can calculate the moles of CO(g) needed for the reaction:

0.1412 moles Fe₂O₃(s) (3 moles of CO(g) / 1 mole of Fe₂O₃(s)) = 0.4236 moles of CO(g)

To get the mass of CO(g), we can convert the moles to grams using the molar mass of CO(g), which is 28.01 g/mol.

0.4236 moles of CO(g)(28.01 g/mol) = 11.8660 = 11.87 g of CO(g)

To find the % yield, we divide the actual yield (15.32 g Fe(s)) by the theoretical yield (mass of Fe(s) produced from all the Fe₂O₃(s) consumed) and multiply by 100.

Theoretical yield of Fe(s) = mass of Fe₂O₃(s)  consumed(mass of Fe(s) produced from 1 mol Fe₂O₃(s)  / mol of Fe₂O₃(s)  consumed)

= 22.55 g Fe₂O₃(s) (55.85 g Fe(s) / mol Fe(s)) (2 mol Fe(s) / 1 mol Fe₂O₃(s)) (1 mol Fe₂O₃(s) / 159.69 g Fe₂O₃(s)) = 15.77 g Fe(s)

% yield = (15.32 g Fe(s) / 15.77 g Fe(s)) x 100 = 97.15%

So, 11.87 g of CO(g) is required to completely react with 22.55 g Fe₂O₃(s) to produce 15.32 g Fe(s) and the % yield of the reaction is 97.15%.

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Plants serve as the main source of nutrition for humans as well as provide many products for human use, such as firewood, timber, fibers, medicines, dyes, oils, and rubber.

Plants are multicellular eukaryotic organisms whose mode of nutrition is mainly autotrophic.

Plants play many important roles in life more especially that of producing food on which many other organisms depend on.

Some of the important ways by which plants support human life include:

Therefore, plants serve as the main source of nutrition for humans as well as provide many products for human use, such as  timber, fibers, medicines, dyes, oils, and rubber.

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Answer:

bohr didn't mention abt sub shells that are in main shells

Answer: Can i see the question

Explanation:

Answer:

The height of the water balloon at 14 seconds would still be zero unless an outside force acts on it, ie. throws or raises it up.

The molar mass of calcium hydroxide,

Ca(OH)₂, is 74.10 g/mol, can be calculated by adding the atomic masses of calcium (Ca), oxygen (O), and hydrogen (H) in the formula.

The atomic mass of calcium (Ca) is 40.08 g/mol, oxygen (O) is 16.00 g/mol, and hydrogen (H) is 1.01 g/mol. Since there are two hydroxide (OH) groups in the formula, we multiply the atomic mass of the hydroxide (OH) by 2.

Ca: 40.08 g/mol

O: 16.00 g/mol

H: 1.01 g/mol

OH: (16.00 + 1.01) g/mol = 17.01 g/mol

Now, we can calculate the molar mass by adding the atomic masses:

Molar mass of Ca(OH)₂ = (1 x Ca) + (2 x O) + (2 x H) = (1 x 40.08) + (2 x 16.00) + (2 x 1.01) = 40.08 + 32.00 + 2.02 = 74.10 g/mol

Therefore, the molar mass of calcium hydroxide (Ca(OH)₂) is 74.10 g/mol, rounded to 2 decimal places.

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In the above intermediate chemical equation, oxygen will appear as follows: O₂(g) as a reactant (option B).

A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

According to this question, an intermediate chemical equation is presented as follows:

As observed in the above chemical equation, oxygen will react in its gaseous form i.e. as a reactant.

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The first step of the reaction, we have  reaction between a nucleophile and an electrophile.

We can see that in the first step of the reaction, we have  reaction between a nucleophile and an electrophile. In this case, the electrophile would have to be an alkyl halide which produces a carbocation as show in the image attached. What we have here is quite similar or  like most of the organic reactions, this reaction occurs in a number of detailed or smaller steps and each step of the reaction is going to help to bring us closer to the end product of the entire steps of the reaction which is wat we target as we carry out the particular reaction.The second step involves the reduction of the alkyne with the use of a Lindlar catalyst. As such the reaction is poisoned and it stops at the alkyne stage rather than going on to obtain the alkane.

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Answer:

49.54%

Explanation:

Given parameters:

Number of organisms in original habitat = 4695

Number of organism in new habitat = 2326

Solution:

To find the percentage of the organisms in the new habitat that has migrated to the new habitat, we use the expression below:

% of the population in the new habitat =  x 100

% of the population in the new habitat =  x 100 = 49.54%