Identify which of these molecules has the highest boiling point and give the reasoning why in terms of intermolecular force. H2O, KCl, CO2

Answer:

To calculate the root mean square velocity of atoms in a gas, we need to know the mass of the atoms, the temperature of the gas, and the gas constant. The root mean square velocity can be calculated using the following equation:

v_rms = sqrt((3RT)/m)

Where v_rms is the root mean square velocity, R is the gas constant, T is the temperature in kelvins, and m is the mass of the atoms in kilograms.

For nitrogen gas (N2), the mass of each atom is 14/6.022 x 10^23 = 2.34 x 10^-23 kg.

For CO2, the mass of each atom is 12/6.022 x 10^23 = 2.0 x 10^-23 kg.

For SO2, the mass of each atom is 32/6.022 x 10^23 = 5.3 x 10^-23 kg.

Plugging these values into the equation, we can calculate the root mean square velocity for each gas at 25°C:

v_rms (N2) = sqrt((38.31298)/(2.34 x 10^-23)) = 466 m/s

v_rms (CO2) = sqrt((38.31298)/(2.0 x 10^-23)) = 505 m/s

v_rms (SO2) = sqrt((38.31298)/(5.3 x 10^-23)) = 691 m/s

Therefore, the root mean square velocity of atoms in a sample of Nitrogen gas at 25°C is 466 m/s, while the root mean square velocity of atoms in a sample of CO2 at the same temperature and pressure is 505 m/s, and the root mean square velocity of atoms in a sample of SO2 at the same temperature and pressure is 691 m/s.

Explanation:

SELF EXPLANATORY

Explanation:

Displacement is the distance travelled in a specific direction. Unlike distance, displacement is a vector quantity with both magnitude and directional attribute.

When we specific displacement values, we must indicate the direction of motion to complete its description.

For example, 50m is a distance value. It has a magnitude but no direction.

When we say 50m due south, this is a displacement because both magnitude and direction are accurately specified and defined.

The statement that "The volume of a gas sample mostly consists of empty space between the moving gas particles" is one of the assumptions of the Kinetic Molecular Theory regarding gases.

What is Collision?

There are different types of collisions, depending on the nature of the objects involved, the speed and direction of their motion, and the type of contact that occurs. For example, elastic collisions are those in which the total kinetic energy of the colliding objects is conserved, meaning that no energy is lost or gained during the collision. In contrast, inelastic collisions are those in which some of the kinetic energy is transformed into other forms of energy, such as heat or sound.

The Kinetic Molecular Theory is a model that describes the behavior of gases. One of the main assumptions of this theory is that gas particles are in constant random motion and move in a straight line until they collide with other particles or the walls of their container.

Another important assumption of this theory is that the volume of a gas sample mostly consists of empty space between the moving gas particles. This means that gas particles are assumed to be very small compared to the overall volume of the gas sample. Therefore, the particles do not occupy all of the available space in the container, but instead only occupy a small portion of it.

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CuI2 is not a known compound. Copper compounds typically have different oxidation states for copper, resulting in various compound names.

Copper(II) oxide (CuO): It is a black solid compound where copper is in the +2 oxidation state. It is commonly used as a pigment and in catalytic reactions.

Copper(II) sulfate (CuSO4): It is a blue crystalline compound in which copper is in the +2 oxidation state. It is used in various applications such as agriculture, electroplating, and as a laboratory reagent.

Copper(I) oxide (Cu2O): It is a red crystalline compound in which copper is in the +1 oxidation state. It is used as a pigment, in solar cells, and as a catalyst.

Copper(II) chloride (CuCl2): It is a greenish-brown solid compound in which copper is in the +2 oxidation state. It is utilized in various chemical processes, including etching and catalyst synthesis.

Copper(II) nitrate (Cu(NO3)2): It is a blue crystalline compound where copper is in the +2 oxidation state. It is commonly used in the production of catalysts, as a coloring agent, and in electroplating.

These are just a few examples of copper compounds with different oxidation states and properties. It's important to note that the compound CuI2 mentioned in the question, if it exists, would be an exception to the typical nomenclature for copper compounds.

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Answer: sorry hun can’t help with this I was asked different questions when I learned this :,)

Explanation: have a nice day

Answer:

3

Explanation:

The mass of Calcium carbonate needed : 246 g

Reaction

CaCO₃(s)→CaO(s)+CO₂(g)

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

Then for 55 L of CO₂, mol :

\(\tt \dfrac{55}{22.4}=2.46\)

From the equation, mol ratio for mol CaCO₃ : mol CO₂ = 1 : 1, so :

mol CaCO₃ = mol CO₂ = 2.46

mass CaCO₃(MW=100g/mol) :

\(\tt mass=mol\times MW\\\\mass=2.46\times 100\\\\mass=246~g\)

1. Water begins to boil - Endothermic

2. Fireworks explode - Exothermic

3. Sweat evaporates cooling your skin - Endothermic

4. Water begins to freeze into ice - Exothermic

5. You ignite your homework assignments once the year is over - Exothermic

6.Sunrays burn your skin - Exothermic

7.Cellular respiration - Exothermic

Exothermic and endothermic refer to two types of chemical reactions or physical processes that release or absorb energy, respectively.

Exothermic reactions release energy in the form of heat, light, or sound. When these reactions occur, they produce a net release of energy into the surroundings, which can often be felt as an increase in temperature. Examples of exothermic reactions include combustion, oxidation, and many types of explosions.

Endothermic reactions, on the other hand, absorb energy from the surroundings in order to proceed. These reactions typically feel cold to the touch and require energy to be added to the system in order to occur. Examples of endothermic reactions include melting, evaporation, and many types of chemical reactions that require heat to be added in order to proceed.

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The IUPAC name for each of the compounds would be:

A. 2,6-Dimethyl octane

B. Octane

IUPAC naming is a system of naming organic compounds according to the rules set up by the International Union of Pure and Applied Chemistry.

According to these rules:

Applying these rules to the structures in the image, the IUPAC names would be as follows:

A. 2,6-Dimethyl octane

B. Octane

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The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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Covalent bonds involve equal sharing of electrons while polar covalent bonds involve unequal sharing of electrons.

A covalent bond involves the sharing of electrons between two atoms. A polar covalent bond is a type of covalent bond where the electrons are not shared equally between the atoms.

This occurs when one atom in the bond has a higher electronegativity than the other, resulting in an unequal distribution of electrons.

The result is a bond with a partial positive and a partial negative charge, creating a polar molecule. In contrast, a nonpolar covalent bond involves an equal sharing of electrons between two atoms.

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Answer:

snow and very low temperatures are predicted for tomorrow.

Explanation:

snow and very low temperatures are associated with average weather condition of a place thus making it a statement about climate.

Answer:

12

Explanation:

because that plot and the iron

18 moles of oxygen can be produced by decomposing 12 moles of KClO₃.

The balanced chemical equation for the decomposition of KClO₃ is:

2KClO₃ → 2KCl + 3O₂

According to the equation, for every 2 moles of KClO₃ decomposed, 3 moles of O₂ are produced. So, to determine how many moles of O₂ are produced by decomposing 12 moles of KClO₃, we can use the following proportion:

2 moles KClO₃ / 3 moles O₂ = 12 moles KClO₃ / x moles O₂

where x is the number of moles of O₂ produced.

Solving for x, we get:

x = (3 moles O₂)(12 moles KClO₃) / (2 moles KClO₃)

x = 18 moles O₂

Therefore, 12 moles of KClO₃ can produce 18 moles of O₂.

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The compound that is shown as X can be seen in the option labelled C

The process of esterification involves the condensation of an alcohol (or phenol) with an acid to produce an ester. To create the ester bond, the water molecule must be removed from the alcohol and acid (dehydration).

Usually, an acid catalyst is used to catalyze the reaction, which makes it easier to remove water and encourages the creation of the ester. The acid catalyst aids in protonating the acid's carbonyl oxygen, which increases its electrophilicity and makes it more vulnerable to alcohol's nucleophilic attack.

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472.7ml of a .5500 M solution of NaI are needed to produce 34.81mg of I\(_2\) in the reaction COCl\(_2\)+2NaI  → 2NaCl+CO+I\(_2\).

A measurement of three-dimensional space is volume. Several imperial or US customary units, as well as SI-derived units (such the cubic meter and liter), are frequently used to quantify it quantitatively. Volume and length (cubed) have a symbiotic relationship.

COCl\(_2\)+2NaI  → 2NaCl+CO+I\(_2\)

number of moles of I\(_2\) =34.81/254=0.13moles

2 moles of NaI gives 1 moles of I\(_2\)

0.13moles are obtained by 2×0.13=0.26moles of NaI

0.550moles of I\(_2\) is present in 1000ml

0.26moles of I\(_2\) is present in (1000/0.55)×0.26=472.7ml

Therefore, 472.7ml of a .5500 M solution of NaI are needed to produce 34.81mg of I\(_2\).

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The electrification reaction is reversible. The formation of the ester represents a condensation, but the reverse reaction represents the hydrolysis of the ester.

that's all I got

good luck:)

Acetic acid only partially ionizes in water as it is a weak acid.

Weak Acids are the acids that do not completely dissociate into their constituent ions when dissolved in solutions.

When dissolved in water, an equilibrium is established between the concentration of the weak acid and its constituent ions.

Acetic acid, also known as ethanoic acid, is a weak acid with the chemical formula CH₃COOH. It is known to be the active component of vinegar.

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Answer:

             Structure is attached below.

Explanation:

                    Start drawing the structure by first sketching the pentene parent molecule. The double bond is present at 2 position. Also, a phenyl group is present at 2 position.

                    The (E) stands for trans conformation which means that the two bulky groups are in opposite side of the double bond. Hence, in this case the two bulky groups are phenyl and ethyl.

The Safety Data Sheet (SDS) for regular bleach can be obtained from the manufacturer or supplier of the specific brand or product. It contains important information regarding the hazardous properties, handling, storage, and emergency procedures related to the bleach.

An SDS typically includes details such as the product's chemical composition, physical and chemical properties, potential hazards to health and the environment, precautionary measures for safe handling and storage, first-aid procedures, and information about proper disposal. It also provides guidance on personal protective equipment (PPE) to be used when handling the product and steps to take in case of accidental release or exposure.

The SDS serves as a crucial resource for understanding the potential risks associated with the use of regular bleach and helps ensure that appropriate safety measures are implemented. It is important to review and follow the information provided in the SDS to minimize the risk of accidents, injuries, or adverse health effects associated with the use of the product.

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Answer:

the answer is second option. with 2 models

Explanation:

2H2 + O2 gives 2H2O

so there's two models

To solve this problem, I'll need some additional information related to the molar mass of butane (C4H10). Please provide the molar mass of butane so that I can proceed with the calculations.

Answer:

The molarity of the given solution was about 2.40 M.

What exactly is molarity?

The quantity of a material in a given volume of solution is measured in molarity (M). Molarity is defined as the number of moles of a solute in one litre of solution. A solution's molarity is also known as its molar concentration.

M is equal to n divided by v.

M stands for molar concentration or molarity.

n = number of moles of solute

v = solution litres

Sodium chloride salt mass = combined mass of evaporating with sodium chloride soution after heating minus mass of evaporating dish

=> 25.50g - 24.10g = 1.40g

1.40g sodium chloride salt mass

M= the number of moles of sodium chloride divided by the volume of solution

=>M = 0.023956 / 0.01

=>M = 2.40 M

Explanation:

The experimental mole-to-mole ratio between sodium bicarbonate and sodium chloride is 1:2.59.

Using the molar masses of each substance to convert the masses to moles:

Molar mass of NaHCO₃ (sodium bicarbonate) = 84.01 g/mol

Molar mass of NaCl (sodium chloride) = 58.44 g/mol

(a) Mass of evaporating dish + watch glass = 100.6 g

(b) Mass of evaporating dish + watch glass + sodium bicarbonate = ?

Mass of sodium bicarbonate used = 2 g

(c) Mass of sodium bicarbonate used in moles = 2 g / 84.01 g/mol = 0.0238 mol

(d) Mass of evaporating dish + watch glass + sodium chloride = 104.2 g

(e) Mass of sodium chloride collected (experimental yield) = 3.6 g

Mass of sodium chloride collected in moles = 3.6 g / 58.44 g/mol = 0.0616 mol

Find the mole-to-mole ratio by dividing the moles of each substance by the lowest value. The lowest value is 0.0238 mol:

0.0616 mol / 0.0238 mol = 2.59

This shows that for every 1 mole of sodium bicarbonate reacted, 2.59 moles of sodium chloride were produced.

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Answer:

1- yes

  HBr--hydrogen bromide

2- no

  BaBr₂----barium bromide  

3- yes

NCl----- nitrogen chlorine  

Hydrogen ,bromine and nitrogen , chlorine are the pair of elements which  will form a molecular compound by covalent bond as they have 1, 7,5, 7 valence electrons respectively.

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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Answer:

for the first question, the context is necessary in order to answer...

Fat is immiscible (does not mix) with water because fat is nonpolar and water is polar (remember like dissolves like: polar mixes with polar, nonpolar with nonpolar).

soap bubbles by having many soap molecules surround fat molecules with their nonpolar end, and direct their polar ends outwards.

For your second question:

Dirt and oil are nonpolar.  When we wash our bodies with water (which is polar) it does not do a good job in removing these nonpolar molecules.  Soap, on the other hand, has a long nonpolar end and a small polar end.  The nonpolar end of the soap molecule attaches to the dirt and oil on your skin and when the water from the shower head hits the soap, it pulls the dirt, oil, and soap off of you by attaching itself to the polar end of the soap molecule.

Explanation:

Answer:

\(Q=-71.1kJ\)

Explanation:

Hello!

In this case, since the formation of ammonia by starting with nitrogen and therefore hydrogen is:

\(N_2+3H_2\rightarrow 2NH_3\)

Which has an energy of reaction of:

\(\Delta _fH_{NH_3}=-45.90 \frac{kJ}{molNH_3}\)

We can compute the energy required for this reaction by first computing the moles of ammonia yielded by 21.7 grams of nitrogen (28.02 g/mol) via stoichiometry:

\(n_{NH_3}=21.7gN_2*\frac{1molN_2}{28.02gN_2}*\frac{2molNH_3}{1molN_2}=1.55molNH_3\)

Thus, the energy turns out:

\(Q=n_{NH_3}\Delta _fH_{NH_3}=1.55molNH_3 * -45.90 \frac{kJ}{molNH_3}\\\\Q=-71.1kJ\)

Best regards!

Answer: 71.1 (Edmentum)

Explanation:

Answer:

The First Battle of Panipat was fought between the invading forces of Babur and the Lodi Empire, which took place on 21 April 1526 in North India. It marked the beginning of the Mughal Empire. This was one of the earliest battles involving gunpowderfirearms and field artillery.

For you to write an essay on  Panipat first bring into view

Then write a brief story using this format.

In writing this essay, you must consider the structure and content of the essay or short note

For structure kick off with

In conclusion, for the content of the short note you can consider this,

Panipat fought its first battle on 21 April 1526 in the North of India, This battle was fought between the invading powers of Babur and the Lodi Empire.

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Answer:

n=17.85 moles

Explanation:

Given mass is, m = 1.5 kg = 1500 g

The molar mass of sodium bicarbonate is, M = 84.007 g/mol

We need to find the no of moles in 1.5 kg of Sodium bicarbonate . We know that, no of moles is equal to given mass divided by molar mass.

\(n=\dfrac{m}{M}\\\\n=\dfrac{1500}{84.007 }\\\\n=17.85\)