30 points A 4-column table with 3 rows. The first column titled compound has entries A, B, C. The second column titled melting point (degrees C) with entries negative 183, 660, 772. The third column titled boiling point (degrees C) has entries negative 164, 2467, 1600. The fourth column titled conducts electricity has entries no, yes, yes.
Which compound is most likely a covalent compound?

Answer:

Mass = 18.36 g

Explanation:

Given data:

Mass of nitrogen = 15 g

Mass of hydrogen = 4 g

Mass of ammonia produced = ?

Solution:

Chemical equation:

N₂ + 3H₂      →       2NH₃

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 15 g/ 28 g/mol

Number of moles  = 0.54 mol

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/ 2 g/mol

Number of moles  = 2 mol

now we will compare the moles of ammonia with nitrogen and hydrogen.

                    H₂            :            NH₃

                      3             :             2

                     2              :            2/3×2 = 1.3

                      N₂            :            NH₃

                      1               :             2

                  0.54             :            2/1×0.54 = 1.08

less number of moles of ammonia are produced by nitrogen thus it is limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 1.08 mol × 17 g/mol

Mass = 18.36 g

   so i have to discuss how forlifts are related to actions in the cell. ok easy Answer: Forklifts collect material (protein) and dump it in storage areas. ... A Cytoplasm is like a Fork Lift because they both transport particles or substances around the factory or the Animal. Therefore, forklift and cytoplasm share this analogy of collecting materials and dumping it elsewhere.

Forklift functionality can be related to cellular functions and organelles.

Cells are defined as the fundamental membrane-bound entity that houses the essential molecules of life and is the building block of all living things. There are many billions of cells in a human body. They give the body structure, absorb nutrients from meals, turn those nutrients into energy, and perform certain tasks.

Protein-containing material is gathered by forklifts and dumped in storage spaces. A cytoplasm is comparable to a forklift in that they both move materials about a factory or an animal. Therefore, this parallel of gathering materials and dumping them somewhere else applies to both forklifts and cytoplasm.

Thus, forklift functionality can be related to cellular functions and organelles.

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727.3 kg of limestone is required to completely neutralize a 4.0 billion liter lake with a ph of 5.6

2H+ + CaCO3 ---> Ca(^2+) + H2CO3

each mole of CaCO3 will neutralize 2 moles of H+,

so you need (14546/2) = 7273 moles .

The molar mass of CaCO3 is 100.0 g/mole so you need 727300g or 727.3 kg of limestone.

Calcite or aragonite are the most common forms of limestone, a sedimentary rock mostly made of calcium carbonate (CaCO3). It could have a significant magnesium carbonate content (dolomite).

Lime, the base calcium oxide, is left behind after heating the limestone (calcium carbonate). The original limestone will be replaced with white lime that is more crumbly in texture. Water and calcium carbonate do not react.

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ANSWER

The approximate volume of the gas is 0.13L

EXPLANATION

Given data

The number of moles of the gas = 0.600 mol

The temperature of the gas = 15.00 degrees Celcius

The pressure of the gas = 1.10 atm

To find the volume of the gas, follow the steps below

Step 1: Assume the gas is an ideal gas

Since the gas is assumed as an ideal gas, hence we can use the ideal gas equation to find the volume of the gas.

The equation is written below as

Where,

P is the pressure of the gas'

V = volume of the gas

n is the number of moles

T is the temperature of the gas

R is the universal gas constant

Step 2: Convert the temperature to Kelvin

Step 3: Substitute the given data into the formula in step 1

Hence, the approximate volume of the gas is 0.13L

Answer: 1s^2 2s^2 2p^6 3s^2 3p^3.

Explanation:

Breaking it down:

The first energy level (1s) contains 2 electrons.

The second energy level (2s) contains 2 electrons.

The second energy level (2p) contains 6 electrons.

The third energy level (3s) contains 2 electrons.

The third energy level (3p) contains 3 electrons.

In total, phosphorus has 15 electrons, with the last electron occupying the 3p orbital.

The full electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3.

The full electron configuration for phosphorus is a description of how its electrons are arranged in its atomic orbitals. It is represented as a series of numbers and letters that indicate the energy level, sublevel, and number of electrons in each sublevel. The full electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. This means that the first energy level contains two electrons, the second energy level contains eight electrons, and the third energy level contains five electrons. The "s" and "p" represent the different sublevels within each energy level, and the superscripts indicate the number of electrons in each sublevel.

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Answer:

The boiling points of alkanes increase with increasing number of carbons. This is because the intermolecular attractive forces.

Explanation:

Answer:

Negative, because the potential energy of the reactants is higher than the potential energy of the products

Explanation:

Exothermic reaction is a reaction in which heat is released to surrounding. This is due to the fact that the heat content of the reactant is higher than the heat content of product thus producing a negative enthalpy change (ΔH) i.e

Enthalpy change = Heat of product – Heat of reactant

ΔH = Hp – Hr = negative

Considering the options given in the question above, the correct answer is:

Negative, because the potential energy of the reactants is higher than the potential energy of the products

Answer:

1. 2.63x10^6

2. 39.2

Both answers have been rounded

The electron geometry (EG) of CBr₃ is trigonal bipyramidal, and the molecular geometry (MG) is T-shaped.

The electron geometry (EG) of a molecule is determined by the arrangement of electron groups (bonding pairs and lone pairs) around the central atom. The molecular geometry (MG) refers to the arrangement of only the bonding pairs of electrons.

In the case of CBr₃, the central atom is carbon (C), and it is bonded to three bromine (Br) atoms. To determine the EG, we first identify the steric number, which is the sum of the number of bonding pairs and lone pairs around the central atom.

In CBr₃, there are three bonding pairs (one C-Br bond for each Br atom), giving a steric number of 3. Based on the steric number, the EG can be determined as follows:

Steric number 3 corresponds to a trigonal planar EG.

Steric number 4 corresponds to a tetrahedral EG.

Steric number 5 corresponds to a trigonal bipyramidal EG.

Steric number 6 corresponds to an octahedral EG.

Since the steric number of CBr₃ is 3, the EG is trigonal planar. However, we also need to consider the molecular geometry, which only accounts for the arrangement of the bonding pairs. In CBr₃, there are no lone pairs on the central atom, so the MG is the same as the EG.

The trigonal planar EG means that the three C-Br bonds are arranged in a plane, forming an equilateral triangle around the central carbon atom. However, when considering the MG, we need to account for the positions of the Br atoms only.

In CBr₃, the three Br atoms are not arranged in the same plane; instead, two of the Br atoms are positioned at the base of the trigonal plane, and the third Br atom is perpendicular to the plane. This arrangement gives rise to the T-shaped molecular geometry.

To summarize, the electron geometry (EG) of CBr₃ is trigonal bipyramidal, and the molecular geometry (MG) is T-shaped.

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Each molecule of sucrose (C₁₂H₂₂O₁₁) dissociates into one molecule of solute when it dissolves in water.

When sucrose (C₁₂H₂₂O₁₁) dissolves in water, it dissociates into its constituent atoms and ions. However, the question is asking about the number of solute molecules resulting from each molecule of sucrose. Since sucrose is a molecular compound and does not ionize in water, it does not dissociate into ions. Therefore, each molecule of sucrose dissolves as a single solute molecule.

To calculate the number of solute molecules formed, we need to first convert the given mass of sucrose into the number of sucrose molecules using Avogadro's number (6.022 x 10²³ molecules/mol):

Number of sucrose molecules = (28 g) / (342.3 g/mol) x (6.022 x 10²³ molecules/mol) = 1.49 x 10²³ molecules

Therefore, when 28 g of sucrose dissolves in 100 mL of water, it forms 1.49 x 10²³ solute molecules. Each molecule of sucrose results in one solute molecule.

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The percentage by mass of acetic acid is 5.14%

What is percentage by mass?

It is defined as ratio of mass of substance to the mass of all substance multiply by 100.It is way to express concentration.

CH3COOH+NaOH= CH3COONa+H2O

we have 1 mole of acid for 1mole of base

Now , C=n/V

C= 0.299M ( its M not m so correct question)

V= 24.5 mL

no of moles = 0.299moles/L × 0.0245 L = 0.00733 moles

for neutralization of 0.00733 moles of Noah require 0.00733 moles  of CH3COOH

given mass of acetic acid = no. of moles × molar mass

0.00733×60g/mole = 0.4398g

% mass of acetic acid =[ 0.4398g/8.55g]×100

⇒ 5.14%

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Determining if a compound contains both ionic and covalent bonds can be done by examining the types of atoms involved in the compound and the nature of their bonding.

Ionic bonds involve the transfer of electrons between a metal and a nonmetal. When this occurs, one atom becomes positively charged (cation) and the other becomes negatively charged (anion). These oppositely charged ions then attract each other to form the ionic compound.

Covalent bonds, on the other hand, involve the sharing of electrons between two nonmetals. In this type of bonding, both atoms share their valence electrons to form a bond.

If a compound contains both a metal and a nonmetal, it is likely to have ionic bonds. However, some compounds that contain only nonmetals can also have ionic bonds. For example, ammonium chloride (NH4Cl) contains only nonmetals, but it is an ionic compound because it is formed by the transfer of an electron from the nitrogen atom to the hydrogen atoms.

If a compound contains only nonmetals, it is likely to have covalent bonds. However, if the nonmetals involved have a large difference in electronegativity, they can form polar covalent bonds, which can have some ionic character.

Overall, to determine if a compound contains both ionic and covalent bonds, you should look at the types of atoms involved and the nature of their bonding. If the compound contains both metals and nonmetals, it is likely to have both ionic and covalent bonds. If the compound contains only nonmetals, it could have either purely covalent bonds or polar covalent bonds with some ionic character.

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Answer:

3 then 4 then 5 then 1 then 2

Explanation:

ordering 1 through 5 from top to bottom

The correct order of igneous rock can form at Mauna Loa is as follows:

3Rock beneath Mauna Loa melts to form magma.

4 Melted rock rises toward Earth's surface.

5 Lava erupts from Mauna Loa and flows down the volcano.

1 Lava flowing down the volcano enters the Pacific Ocean.

2 Ocean water cools the lava, causing it to crystallize and form igneous rock.

Igneous rocks are the form when hot, molten rock crystallizes and solidifies. Igneous rock is produced through the cooling and solidification of magma or lava.

Igneous rocks produce when magma from inside the Earth moves toward the surface, or is forced above the Earth's surface as lava and ash by a volcano.

Thus, The correct order of igneous rock can form at Mauna Loa is 3, 4, 5, 1, and 2.

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The molar concentration of Al(OH)₃ in the solution is 1.61 M.

we need to calculate the number of moles of Al(OH)3 in the solution:

Number of moles of Al(OH)₃ = mass of Al(OH)3 / molar mass of Al(OH)3

Molar mass of Al(OH)₃ = (1 x atomic mass of Al) + (3 x atomic mass of O) + (3 x atomic mass of H)

Molar mass of Al(OH)₃ = (1 x 26.98 g/mol) + (3 x 16.00 g/mol) + (3 x 1.01 g/mol) = 78.00 g/mol

Number of moles of Al(OH)₃ = 62.7 g / 78.00 g/mol = 0.804 moles

Next, we need to calculate the volume of the solution in liters:

Volume of solution = 500.0 mL = 500.0 mL x (1 L/1000 mL) = 0.500 L

Finally, we can calculate the molar concentration of Al(OH)₃

Molarity = moles of solute/volume of solution in liters

Molarity = 0.804 moles / 0.500 L = 1.61 M

Therefore, the molar concentration of Al(OH)₃ in the solution is 1.61 M.

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The main answer to your question is that two major products are formed from this reaction. The first product is formed through a stepwise mechanism that involves the formation of an intermediate. The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.

An explanation of the reaction and its products is that it involves a chemical reaction between two reactants.

The reaction proceeds through a series of steps that involve the formation of an intermediate.

The intermediate then undergoes a series of transformations that result in the formation of the first product.

The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.

In summary, the reaction produces two major products, and the first product is formed through a stepwise mechanism that involves the formation of an intermediate. The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.

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A decomposition reaction is a type of chemical reaction where a compound breaks down into two or more simpler substances. This process is typically induced by heat, light, or an electrical current.

In a decomposition reaction, the reactant compound typically breaks down into two or more products, which can be elements or simpler compounds.

There are various types of decomposition reactions, such as thermal decomposition, electrolytic decomposition, photolytic decomposition, and catalytic decomposition, depending on the type of energy that is used to initiate the reaction.

For example, the decomposition of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2) is a decomposition reaction:

\(2H_2O_2 --- > 2H_2O + O_2\)

Thus, this is decomposition reaction.

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\( \huge \red {Answer} \)

Explanation:

Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom

Carbon dioxide is a colorless and non-flammable gas at normal temperature and pressure. Although much less abundant than nitrogen and oxygen in Earth's atmosphere, carbon dioxide is an important constituent of our planet's air. A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms.

I hope you got it..... ♥️

Answer:

1) 1Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. **

2) Although much less abundant than nitrogen and oxygen in Earth's atmosphere, carbon dioxide is an important constituent of our planet's air. A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms. Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. ^^

The first feldspars to form are rich in the mineral calcium.

To recap, the initial feldspars that form are calcium-rich.

Any of a group of minerals called aluminosilicates that contain calcium, sodium, or potassium are called feldspar. More than half of the Earth's crust is made up of feldspars, and a sizable portion of the literature on mineralogy is devoted to them.

Calcium-rich Plagioclase is the first feldspar to form when cooling magma cools, but as crystallization proceeds, plagioclase gradually gains sodium content.

Feldspar's structure is built on aluminosilicate tetrahedra, each of which contains an aluminum or silicon ion and four oxygen ions around it.

Each oxygen ion generates a three-dimensional network that each tetrahedron adjacent shares. Here, we can see the crankshaft chains, which are lengthy chains of aluminosilicate tetrahedra.

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Answer:

Heterogeneous mixture because it is not soluble and in non uniform texture.

In the reaction of benzene with a mixture of nitric acid (HNO3) and sulfuric acid (H2SO4), the electrophile is the nitronium ion (NO2+). The formation of the nitronium ion occurs through a two-step process:

1. First, nitric acid and sulfuric acid react together, producing nitronium ion (NO2+) and hydrogen sulfate ion (HSO4-). The equation for this reaction is:

HNO3 + H2SO4 → NO2+ + HSO4- + H2O

2. The nitronium ion (NO2+), which is a strong electrophile, then reacts with benzene in an electrophilic aromatic substitution reaction. This results in the formation of nitrobenzene (C6H5NO2) and a hydrogen ion (H+).

In summary, the electrophile in the reaction of benzene with a mixture of nitric acid and sulfuric acid is the nitronium ion (NO2+).

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The pollution→ over-exploitation of resources→ deforestation→ over-population are the major things which causes the ecosystem in a negative manner.

In the food web we can write this as pollution→ over-exploitation of resources→ deforestation→ over-population.

The human activities has very deep impact on the flow of energy because the human's are the responsible for polluting the air by using different types of machines, industries, by burning the things. By doing so the different types of gases produce which mixes up with our atmosphere and can harm the ozone layer. Due to the human activities the global warming is increasing day by day. The air becomes more pollutes. The human activities have a negative impact on our ecosystem by creating problems.

So we can conclude that pollution→ over-exploitation of resources→ deforestation→ over-population are the major things which causes the ecosystem in a negative manner.

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Answer:

the answer is gravity

hope this helps

Answer:

Tetrachlorodiborane or Diboron tetrachloride

Answer: the answer is A

Explanation:

Answer: The mass of a 9.0 cm3 cube of lead is 102.6 g

If you multiply volume with the given density you will get the mass of the lead

here,

The given volume is 9.0 cm3 and the density is 11.4g/cm3

the mass will be (9.0*11.4)g = 102.6 g

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Answer:

umm well when a reaction happens it's chemical and when you put like salt and pepper or cookies and crackers its physical

Explanation:

It would require 6.31 kJ of energy to change 2.8 g of liquid water to steam if the water is already at 100°C.

To solve this problem, we need to use the following equation:

q = n * ΔHvap

where q is the amount of energy required to vaporize the liquid, n is the number of moles of water, and ΔHvap is the molar heat of vaporization.

First, we need to calculate the number of moles of water in 2.8 g. We can use the molar mass of water, which is approximately 18 g/mol:

moles of water = mass / molar mass

moles of water = 2.8 g / 18 g/mol

moles of water = 0.1556 mol

Next, we can use the equation above to calculate the amount of energy required to vaporize this amount of water:

q = n * ΔHvap

q = 0.1556 mol * 40.6 kJ/mol

q = 6.31 kJ

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It would require 6.31 kJ of energy to change 2.8 g of liquid water to steam if the water is already at 100°C.

To solve this problem, we need to use the following equation:

q = n * ΔHvap

where q is the amount of energy required to vaporize the liquid, n is the number of moles of water, and ΔHvap is the molar heat of vaporization.

First, we need to calculate the number of moles of water in 2.8 g. We can use the molar mass of water, which is approximately 18 g/mol:

moles of water = mass / molar mass

moles of water = 2.8 g / 18 g/mol

moles of water = 0.1556 mol

Next, we can use the equation above to calculate the amount of energy required to vaporize this amount of water:

q = n * ΔHvap

q = 0.1556 mol * 40.6 kJ/mol

q = 6.31 kJ

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The volume of a 0.298 M nitric acid solution is required to neutralize 17.5 mL of a 0.118 M sodium hydroxide solution is 6.93 ml (Approx.)

To determine the volume, we can use the concept of molarity and the balanced chemical equation:
HNO₃ (nitric acid) + NaOH (sodium hydroxide) → NaNO₃ (sodium nitrate) + H₂O (water)

Step 1: Determine the moles of sodium hydroxide (NaOH) in the solution.
moles = Molarity × Volume
moles of NaOH = 0.118 M × 0.0175 L (converted from 17.5 mL)
moles of NaOH = 0.002065 mol

Step 2: Determine the moles of nitric acid (HNO₃) required for neutralization.
From the balanced equation, the mole ratio of HNO₃ to NaOH is 1:1.
So, moles of HNO₃ = moles of NaOH = 0.002065 mol

Step 3: Calculate the volume of the 0.298 M nitric acid solution needed.
Volume = moles / Molarity
Volume of HNO₃ = 0.002065 mol / 0.298 M
Volume of HNO₃ ≈ 0.00693 L (converted to ml: ≈ 6.93 ml)

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