the carbon intermediate generated via homolytic bond cleavage of a c-c sigma bond

Answer:

Mercury

Explanation:

Mercury has a melting point of -39°C and a boiling point of 357°C, which makes it liquid at room temperature (around 20°C).

Answer:

FeBr2

it is what it is indeed

The grams of water needed to create a 4 molal solution with 9 moles of NaOH is 2250 grams.

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Answer:

3.8 L

Explanation:

Divide moles by the molarity to find the liters necessary.

0.95/0.25 = 3.8

Answer: The name of the salt produced is Calcium Sulphate.

Explanation:

we know, whenever an acid reacts with a base, we get a salt and water.

In the given question, Calcium Hydroxide is a base and Sulfuric acid is an acid.

When Calcium Hydroxide reacts with Sulfuric Acid, we get Calcium Sulphate and Water.

The required balanced chemical reaction is:-

Ca(OH)2 + H2SO4 = CaSO4 + 2H2O

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Answer:

The best answer that describes ionic compounds is B. Atoms are held together by electrostatic forces. Ionic compounds are formed by the transfer of electrons from one atom to another, resulting in the formation of positively charged cations and negatively charged anions. These oppositely charged ions are held together by strong electrostatic forces, resulting in the formation of a stable ionic compound. Therefore, option B is the correct answer.

The first step in the digestive process happens before we even taste food. Just by smelling that homemade apple pie or thinking about how delicious that ripe tomato is going to be, you start salivating — and the digestive process begins in preparation for that first bite.

Almost all animals have a tube-type digestive system in which food:

enters the mouth

passes through a long tube

exits the body as feces (poop) through the anus

Along the way, food is broken down into tiny molecules so that the body can absorb nutrients it needs:

Protein must be broken down into amino acids.

Starches break down into simple sugars.

Fats break down into into fatty acids and glycerol.

Answer: The answer is 5.076 g of iodine solid.

Explanation:

Answer:

9.05L

Explanation:

Answer: 5 and 11

Explanation:

protons= 5

neutrons=6

mass number= 6+5=11

Explanation:

1. Particles in the gaseous form can move freely because it is widely spread out.

2. Particles in solid are the tightly packed

The molar concentrations of sodium ion, hydroxide ion, and phosphate ion after the reaction is complete is :

1) [Na] =   = 1 M

2) [PO₄]   = 0.191 M

3) [OH]   = 0.428 M

The balanced equation is given as :

3NaOH  +  H₃PO₄   ---->   Na₃PO₄  +   3H₂O

volume of NaOH = 150 mL = 0.150 L

molarity of NaOH = 1 M

moles of NaOH = molarity × volume

                          = 1 × 0.150

                          = 0.150 mol

moles of   H₃PO₄   = mass / molar mass

                              = 2.80 / 97.99

                              = 0.0286 mol

1) [Na] = 0.150 mol / 0.150 L  = 1 M

2) [PO₄] = 0.0286 mol/ 0.150 L = 0.191 M

3) [OH] = 0.150 mol - 3(0.0286 mol) = 0.0642 mol

[OH] = moles / volume

       = 0.0642 / 0.150

       = 0.428 M

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The number of moles of chlorine in a 67.2 liter sample at STP (Standard Temperature and Pressure), is approximately 3 moles.

We need to use the ideal gas law and the molar volume of a gas at STP.

STP conditions are defined as a temperature of 273.15 Kelvin (0 degrees Celsius) and a pressure of 1 atmosphere (1 atm).

The molar volume of a gas at STP is approximately 22.4 liters/mol.

Given:

Volume of the sample = 67.2 liters

We can use the formula:

n = V / Vm

where:

n = number of moles

V = volume of the sample

Vm = molar volume at STP (22.4 liters/mol)

Now, let's calculate the number of moles:

n = 67.2 L / 22.4 L/mol

n ≈ 3 moles

Therefore, there are approximately 3 moles of chlorine in a 67.2 liter sample of chlorine at STP.

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The expected mass of copper produced is approximately 357.13 grams. To determine the mass of copper produced when hydrogen gas reduces copper(II) oxide, we need to use the balanced chemical equation and the stoichiometry of the reaction.

The balanced chemical equation for the reaction between hydrogen gas (H2) and copper(II) oxide (CuO) is:

2 H2(g) + CuO(s) → Cu(s) + H2O(g)

From the equation, we can see that 2 moles of hydrogen gas are required to produce 1 mole of copper. Therefore, we need to convert the volume of hydrogen gas to moles, and then use the mole ratio to find the moles of copper.

First, let's convert the volume of hydrogen gas to moles using the ideal gas law:

PV = nRT

Where:

P = pressure (STP is 1 atm)

V = volume of gas (250 L)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature (STP is 273.15 K)

Plugging in the values:

(1 atm)(250 L) = n(0.0821 L·atm/(mol·K))(273.15 K)

n = (1 atm)(250 L) / (0.0821 L·atm/(mol·K))(273.15 K)

n ≈ 11.24 moles of H2

According to the stoichiometry of the balanced equation, 2 moles of H2 react to produce 1 mole of Cu. Therefore, the moles of Cu produced will be half of the moles of H2 used:

moles of Cu = 11.24 moles H2 / 2

moles of Cu ≈ 5.62 moles

Finally, we can calculate the mass of copper using the molar mass of copper (Cu):

mass of Cu = moles of Cu × molar mass of Cu

mass of Cu = 5.62 moles × 63.55 g/mol

mass of Cu ≈ 357.13 g

Therefore, the expected mass of copper produced is approximately 357.13 grams.

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Answer:

B) rate of growth I'd say

Explanation:

it sounds better I don't think anyone would use height of plants if they want to sound professional

Answer:

Column A            \({}\)                                              Column B

1. CaS                   \({}\)                                              Calcium Sulfide

2. CaSO₄            \({}\)                                                Calcium sulfate

3. CaSO₃            \({}\)                                                 Calcium sulfite

Explanation:

1) Calcium sulfide is a compound formed between calcium, Ca, and sulfur, S, with a chemical formula of CaS. It forms cubic crystals similar to rock salt, and smells like rotten eggs

2) Calcium sulfate is a chemical compound consisting of calcium, Ca, and sulfate SO₄. It is found in nature in the hydrated form as the mineral gypsum

3)Calcium sulfite is a chemical compound formed between calcium, Ca and sulfite, SO₃ used to treat water and preserve food.

Answer:

the formula for calcium sulfite is CaSO3

the formula for calcium sulfate is CaSO4

the formula for calcium sulfide is CaS

Explanation:

The total mass of 4 tin is in grams is 580 grams and in kg is 0.58kg.

One tin of chopped tomatoes weight is 145 grams

and we have to calculate it for 4

so for 4

145*4 =580 grams

and we have to change it into kilograms so

580 /1000  = .58kg

By 1,000, divide the number of grams.

To convert from grams to kilograms, simply divide by 1,000 because there are 1,000 grams in every kilogram. If necessary, construct the equation using fractions. Put the number of grams over 1 and divide it by the conversion factor, which is 1 kg / 1,000 g. Your answer in kilograms will result from the cancellation of the grams. Remember to use the appropriate units to mark your response.

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The chest electrode placed on the fifth intercostal space on the mid-clavicular line is known as the V4 electrode. V4 is part of the precordial electrodes used in a standard 12-lead electrocardiogram (ECG) to assess the electrical activity of the heart.

The placement of these electrodes is crucial for obtaining an accurate ECG, which helps healthcare professionals diagnose and monitor various cardiac conditions.
The V4 electrode is positioned on the left side of the chest in line with the middle of the clavicle (collarbone), at the level of the fifth intercostal space. To locate this space, one should palpate the ribcage and count down from the first rib until the fifth rib space is found. Proper electrode placement ensures that the ECG will accurately capture the electrical signals originating from the heart.
Other precordial electrodes, such as V1, V2, V3, V5, and V6, are also strategically placed on specific areas of the chest to obtain a comprehensive view of the heart's electrical activity. Collectively, the information from all 12 leads provides a detailed picture of the heart's functioning, assisting in the diagnosis of heart conditions and guiding treatment decisions.
In conclusion, the V4 electrode plays a vital role in electrocardiography, as its placement on the fifth intercostal space on the mid-clavicular line enables healthcare professionals to monitor the heart's electrical activity and make informed decisions about patient care.

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Answer:

Common properties of hydrocarbons are the facts that they produce steam, carbon dioxide and heat during combustion and that oxygen is required for combustion to take place. The simplest hydrocarbon, methane, burns as follows: CH4 + 2 O2 → 2 H2O + CO2 + energy.

Explanation:

Answer:10

Explanation:

Multiply the volume by the density to get the mass.

Divide the mass by the molar mass to get the number of moles.

The postulate of kinetic molecular theory is that the kinetic energy of gas molecules depends on temperature. Therefore, the correct answer is: "The kinetic energy of gas molecules depends on temperature." The correct option is D.

The kinetic energy of gas molecules depends on temperature. This is the postulate of  kinetic molecular theory. so, this is the correct choice. The other answer choices are not postulates of kinetic molecular theory. For example, "Molecules of gases have a finite volume" is not a postulate, but rather a property of gases described by the theory.

Similarly, "Molecules of gases attract and repel one another" is not a postulate, but rather a statement about the intermolecular forces between gas molecules. Finally, "Collisions between gas molecules are inelastic" is not a postulate, but rather a statement about the behavior of gas molecules during collisions.

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In a conducting metal, the valence electrons are delocalized and can  The conduction band is partially filled with electrons, allowing them to move and conduct electricity. The valence band, which is formed by the lower energy atomic orbitals, is either completely filled or partially filled.

A semiconductor has a smaller energy gap between the valence band and the conduction band compared to an insulator. This smaller energy gap allows some electrons to move from the valence band to the conduction band when energy is supplied. In a semiconductor, the valence band is usually filled, while the conduction band is either empty or only partially filled.

In an insulator, the energy gap between the valence band and the conduction band is larger than that of a semiconductor. This large energy gap makes it difficult for electrons to move from the valence band to the conduction band, resulting in very limited conductivity.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 80 × 1.6

We have the final answer as

Hope this helps you

Answer:

The Solar Nebula Theory accounts for the creation of solar systems, stars, and planets. The theory accounts for planet composition by stating that iron compounds, silicates, and dust clump together to form planetesimals. Because of the proximity of the sun, ices and gases cannot condensate near them, so they do not become gas giants. The planetesimals then collide together due to gravity and collect to form our rocky planets.

Explanation:

Answer:

\(\sf\large\underline\purple{Fractional\: Distillation:-}\)

\(\rightarrow\)The process involves repeated distillations and condensations and the mixture is usually separated into component parts. The separation happens when the mixture is heated at a certain temperature where fractions of the mixture start to vaporize.

\(\rightarrow\)The basic principle of this type of distillation is that different liquids boil and evaporate at different temperatures. So when the mixture is heated, the substance with lower boiling point starts to boil first and convert into vapours.

\(\sf\underline\green{Applications\: Of\:Fractional\: Distillation:-}\)

________________________________

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A covalent compound is a compound with a metal and a nonmetal ion sharing valence electrons (option A).

A covalent compound is a molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons.

Covalent bond is a type of chemical bond where two atoms are connected to each other by the sharing of two or more electrons.

Chemical compounds are generally grouped into one of two categories as follows;

Covalent or molecular compounds generally result from two nonmetals reacting with each other. The elements form a compound by sharing electrons, resulting in an electrically neutral molecule.

Examples of covalent compounds are as follows:

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