) Describe five mechanisms that promote aggregation in soils. ​

Answer: Right Side

Explanation: The nonmetals or non-metals are a group of elements located on the right side of the periodic table (except for hydrogen, which is on the top left).

Answer: non-metals are on the right side of the periodic table. They are located to the right of the line (usually appears as a dark latter). Note that hydrogen is not located there but it is also a non-metal.

Not adversely but deer population do effects the biodiversity in a way that plant diversity specifically get reduced.

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137.6 grams of oxygen are needed to completely burn 27.6 grams of C₂H₂ during the combustion of propane in the equation.

The molar mass of C₂H₂ = 32 g

Molar mass of oxygen = 32 g

Therefore, the moles of propane is given as

27.6/ 32

=0.86 moles

Usually 1 equivalent of C₂H₂ will consume 5 equivalent of oxygen. So, 0.86 moles will consume

0.86 × 5

= 4.3

So, moles of oxygen will be

4.3 × 32

= 137.6 g

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Answer:

A: protons + neutrons

Explanation:

protons and neutrons both have the same mass. Their mass is much greater than the mass of an electron so it is deemed negligible

Answer:

5.08 x 10¹⁴ Hz

Explanation:

To find the frequency, you need to use the following equation:

f = c / λ

In this equation,

-----> f = frequency (Hz)

-----> c = speed of light (3.00 x 10⁸ m/s)

-----> λ = wavelength (m)

After converting the wavelength from nm to m, you can plug the given values into the equation and solve for "f".

 590 nm                     1 m
----------------  x  ------------------------  =  5.90 x 10⁻⁷ m
                              1 x 10⁹ nm

f = c / λ                                                              <----- Given equation

f = (3.00 x 10⁸ m/s) / (5.90 x 10⁻⁷ m)                <----- Insert values

f = 5.08 x 10¹⁴ Hz                                             <----- Divide

Answer:

40.04g

Explanation:

the water has one molecule of hydrogen and two molecules of oxygen(H20)

(4.02)(2)(32)

When the pH of a solution decreases, hydrogen ion concentration increases

The overall concentration of hydrogen ion is inversely related to its pH and can be measured on the pH on the pH scale which is from 1 to 14 and therefore the more hydrogen ions present, the lower the pH conversely the fewer hydrogen ions the higher the pH as the concentration of hydrogen ion is logarithmically inversely proportional to pH and pH of solution is decreased then hydrogen ion concentration will increase by the power of 10

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Explanations

Given the following

Mass of potassium carbonate = 22.5grams

Determine the moles of potassium carbonate

Moles of potassium carbonate = mass/molar mass

22.5/138.205|

= 0.1628moles

Since the precipitate formed is aluminum hydroxide, hence the mole of precipitate formed if 3moles off K2CO3 produce 2moles of Al(OH)3 is given as:

Hence the moles of dried precipitate should be formed

Hydrochloric acid reacts with zinc, giving Hydrogen gas and zinc chloride.

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The calorific capacity of a substance related to the temperature when specific heat of a substance ∆Q changes.

Specific heat is defined as the heat required to raise the temperature of 1 gram of a substance by one degree.

Specific heat = q/(∆T × mass of the substance)

Heat Capacity is defined as the amount of heat required to raise the temperature of the system by one degree.

Units of heat capacity :

The unit of heat capacity are joule/kelvin or joule/Celsius.

Thus, we concluded that the calorific capacity of a substance related to the temperature when specific heat of a substance ∆Q changes.

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In this question, we have the following reaction:

2 Pb + O2 -> 2 PbO

We have to find the percent yield of this reaction, we have:

451.4 grams of Pb

316.9 grams of PbO, this is the actual yield, we will have to find the theoretical yield now

In order to find the theoretical yield, we need to know how many moles of Pb we have in 451.4 grams, the molar mass of Pb is 207.2g/mol

207.2g = 1 mol

451.4 g = x moles

207.2x = 451.4

x = 451.4/207.2

x = 2.18 moles of Pb in 451.4 grams

According to the molar ratio of Pb and PbO, we have the ratio of 2 moles of Pb to form 2 moles of PbO, therefore if we have 2.18 moles of Pb, we will also have 2.18 moles of PbO.

Now we need to find the theoretical mass of PbO, using its molar mass, 223.2g/mol

223.2g = 1 mol

x grams = 2.18 moles

x = 2.18 * 223.2

x = 486.6 grams of PbO is the theoretical yield

Now to find the percent yield, we need to use the following formula:

%yield = (actual yield/theoretical yield)*100

%yield = (316.9/486.6)*100

%yield = 65

The percent yield of this reaction will be 65%

Answer:

75.114ml

Explanation:

volume = mass÷ density

The Rf value is used to produce a final confirmation of the identify of a substance its true sentence

In thin-layer chromatography, the retention factor Rf is used to compare and help identify compounds and the Rf value of a compound is equal to the distance traveled by the compound divided by the distance traveled by the solvent front both measured from the origin and Rf values are used to determine polarity, relative masses, and relative solubility's, among other things

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Taking into account the reaction stoichiometry, 121.89 grams of AgI are produced from 43.3 g of calcium iodide.

In first place, the balanced reaction is:

CaI₂ + 2 AgNO₃ → 2 AgI + Ca(NO₃)₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 166.8 grams of CaI₂ form 469.54 grams of AgI, 43.3 grams of CaI₂ form how much mass of AgI?

mass of AgI= (43.3 grams of CaI₂×469.54 grams of AgI)÷ 166.8 grams of CaI₂

mass of AgI= 121.89 grams

Finally, 43.3 grams of CaI₂ form 121.89 grams of AgI.

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Fe(OH)₂(s) + O₂(g) +OH → Fe(OH)₃(s) + H₂O balance in basic solution is 4Fe(OH)₂ (s) + O₂(g) + 2H₂O → 4Fe(OH)₃(s)

A basic solution is an aqueous solution containing more OH⁻ ions than H⁺ ion

The unbalanced redox equation is as follows:

Fe(OH)₂(s) + O₂(g) +OH → Fe(OH)₃(s) + H₂O

In the chemical reaction all atoms other than hydrogen and oxygen are balanced and the oxidation number of fe changes from 2 to 3 and the change in the oxidation number is 1 and the oxidation number of fe changes from 0 to -2 and for 2O atoms the change in the oxidation number is 4 and then balance the equation with increase in the oxidation number and with decrease in the oxidation number

Fe(OH)₂(s) and Fe(OH)₃(s) with 4 then,

4Fe(OH)₂(s)+O₂(g) → 4Fe(OH)₃(s)

To balance O atoms, add 2 water molecules on LHS,

4Fe(OH)₂ (s) + O₂(g) + 2H₂O → 4Fe(OH)₃(s)

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Since hydroiodic acid is a strong acid and completely dissociates, we can use this formula:

pH = -log[H+]

pH = -log[0.0520]

pH = 1.284

The balanced NET ionic equation for the reaction when (NH₄)₂CO₃  and CaCl₂ are mixed in aqueous solution.

  Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

The reaction is :

(NH₄)₂CO₃        +    CaCl₂  ----->    NH₄Cl      +    CaCO₃

1) the balanced molecular eqaution :

(NH₄)₂CO₃(aq)     +    CaCl₂(aq)  ----->    2NH₄Cl(aq)      +    CaCO₃(s)

2) split strong electrolytes into ions : complete ionic equation

2NH₄⁺  +  CO₃²⁻   +   Ca²⁺   +   2Cl⁻  ----->    2NH₄⁺    +   2Cl⁻  +  CaCO₃

3) eliminate the spectator ions on both sides of ionic equation:

CO₃²⁻(aq)   +   Ca²⁺(aq)  --->   CaCO₃(s)

4) The net ionic equation is :

Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

Thus, The balanced NET ionic equation for the reaction when (NH₄)₂CO₃  and CaCl₂ are mixed in aqueous solution.

  Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

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Atoms are made up of protons and neutrons in the center, with electrons circling in orbitals outside the nucleus.

As a result, option c is the right answer.

A complicated collection of electrons with negative charges grouped in specified shells around a positive-charged nucleus is an atom. This nucleus, which is made up of protons and neutrons, holds the majority of the atom's mass (except for common hydrogen which has only one proton). Every atom is nearly the same size.

The electron is a specific location where an electrons is most likely to be found. We can't see where an electrons is, but we can utilize its wave equation to calculate the likelihood that it is in a specific place.

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According to Charle's law, a balloon at 600 K has a volume of 3.83 L.

Charles' law states that, under constant pressure, the volume a given amount of gas fills is directly proportional to its absolute temperature. For instance, when the temperature drops during the winter, a basketball placed outside in the ground would contract.

Mathematically, Charles' law can be written as V1/T1 = V2/T2, where V1 denotes the volume at the beginning, T1 the temperature at that point, and V2 the volume at the end with T2 the temperature at that point.

The following examples of how Charles' law is applied in real life:

Helium balloons shrink when it's cold outside.

From Charles' law, V/T = constant

V₁/T₁ = V₂/T₂

or, 2/313 = V₂/600

or, V₂ = (2x600)/313

          = 3.83

Hence, form Charles' law we conclude the volume of balloon at 600 K is 3.83 L.

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According to the image, it can be inferred that the students in Florida are in summer when the earth is in position 1.

The seasons are a term that refers to each of the periods of time in which the year is divided, with a duration greater than the months, characterized by the typical behavior of some meteorological variable. They occur cyclically and inverted between one hemisphere and another.

In general, the seasons are divided in this way:

Position 1: June 21 - September 23

Boreal Summer

I invest Austral

Position 2: September 23 - December 21

boreal autumn

southern spring

Position 3: December 21 - March 21

boreal winter

Ausral Summer

Position 4: March 21 - June 21

boreal spring

southern autumn

According to the above, it can be inferred that in position 1 the students from Florida will be in the summer season because Florida is in the boreal hemisphere of the earth (Northern hemisphere).

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Both methane and nitrous oxide are more effective greenhouse gases than carbon dioxide.

Measured over twenty years methane is eighty times more powerful than carbon dioxide and causes global warming, while nitrous oxide is 280 times more powerful. During the industrial age, carbon dioxide caused about 10 times more warming than nitrous oxide. But laughing gas is stronger. One pound of gas heats the atmosphere about 300 times more than one pound of carbon in 100 years.

Water vapor is the most powerful greenhouse gas in the Earth's atmosphere and plays a unique role among them. The amount of water vapor in the atmosphere is usually not directly changed by human actions. It depends on the air temperature. Compared to other anthropogenic greenhouse gases, carbon dioxide CO2 has the largest relative contribution to the increase in the greenhouse effect.

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If want to measure the mass of a fly in metrics use a scale or a balance.

The current international standard metric system and the one that is most generally used worldwide is the International System of Units (Système international d'unités, or SI). It is a development of Giorgi's MKSA system, with the meter, kilogram, second, ampere, kelvin, candela, and mole as its fundamental units.

A balance is used to estimate an object's mass for the majority of commonplace objects. The balance compares the target object to a known mass object. Digital scientific balances and beam balances, like a triple beam balance, are examples of several sorts of balances.

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From the particles shown, the ones that will have a stronger attraction to each other are those in water H₂O. This is because water has a boiling point of 100°C while that of CO₂ is -78.5. Hence, while both are covalently bonded, the bonds in water are stronger.

It is to be noted that a covalent bond is formed between two atoms by the mutual use of one or more pairs of electrons. The two atomic nuclei attract these electrons at the same time. When the difference in electronegativities of two atoms is too tiny for electron transfer to produce ions, a covalent bond occurs.

The word "covalent bond" first appeared in 1939. The prefix co- denotes jointly, related in action, paired to a lesser degree, etc.; hence, a "co-valent bond" in essence indicates that the atoms share "valence," as defined in valence bond theory.

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The empirical formula of the compound is mathematically given as

C2H4O

This is further explained below.

Generally, The empirical formula of a chemical compound is the most straightforward representation of the atom counts in the molecule as whole numbers.

As a straightforward illustration of this idea, consider the empirical formula of sulfur monoxide, which is denoted by the symbol SO, and compare it to the empirical formula of disulfur dioxide, which is denoted by the symbol S2O2.

moles of CO_2=[tex]\frac{ 1.6004 }{44.01}[/tex]

moles of CO_2= 0.0364 moles

moles of H_2O=[tex]\frac{0.6551}{ 18.01 }[/tex]

moles of CO_2= 0.0364 moles

It takes 0.0364 moles of carbon to make up 1 mole of carbon dioxide.

1 mole of H2O contains 2 moles of hydrogen, which is equal to 2 times 0.0364, or 0.0728 moles of hydrogen.

C & H = 0.0364 x 12.01

C & H= 0.437 g C

0.0728 x 1.008 = 0.0734 gH

Mass O = 0.8009 -(0.437 + 0.0734)

Mass O= 0.2905 g

O moles=[tex]\frac{0.2905}{16}[/tex]

O moles= 0.0182 moles

C = [tex]\frac{0.0364}{ 0.0182}[/tex]

C= 2

H =[tex]\frac{0.0728}{ 0.0182}[/tex]

H = 4

O =[tex]\frac{0.0182}{ 0.0182 }[/tex]

O= 1

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When a solute dissolves in water, a solution is formed.

A solute is any substance capable of dissolving in a solvent in order to form a solution.

When a solute dissolves in a particular solvent, it is said to be that solvent-soluble. Otherwise, it is insoluble.

Now, when the solvent in question is water, the substance is said to be water-soluble or water-insoluble as the case may be.

If a solute is water-soluble, then it forms a solution. If the solute is ionic, it does not just form a solution, it dissociates into its component ions in the solution.

If the solute is not ionic, no dissociation occurs in the solution.

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Answer:

cell wall

Explanation:

plant cell have cell wall and can go through the process of plasmolysis.

they also contain stoma

animal cell are smaller