why do tertiary alcohols react faster with concentrated hydrochloric acid than secondary or primary alcohols?

Answer:

A Man

Explanation:

Men have it a little bit easier, but at the same time, it depends on what each person is going through in their life.

Don't get me wrong I'm not saying men have it much easier but somethings favors men.

To be honest I don't if that made sense.

From highest to lowest according to the percentages of greenhouse gases they emit.

What are greenhouse gases?

The main greenhouse gases in Earth's atmosphere are water vapour (H2O), carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone. A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy in the thermal infrared range (O3). Without greenhouse gases, the average surface temperature of the Earth would be closer to 18 °C (0 °F) than it is today, which is 15 °C (59 °F). Additionally, greenhouse gases are found in the atmospheres of Venus, Mars, and Titan.

Thus the correct order goes as:

Forestry, agriculture, transportation, residential and commercial buildings

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Answer:

butane I think

Explanation:

Answer: C planets dont travel in perfect circles and they do not orbit earth they orbit the sun and they ellipse around the sun. this is the correct answer do not lsiten to the other person

Explanation:

The statement which is correct about planetary orbits is the planets travel in ellipses around the sun.

Orbits is the path of the motion, in which planets do revolutionary motion in a particular sequence.

In the solar system, sun is present at the center and all the planets do revolution around the sun in their orbits which are ellipse in their shape. Elliptical shape of the orbits is due the large distance of planets from the sun which reduces the speed due to less gravitational force of sun on that object.

Hence, option (C) is correct i.e. The planets travel in ellipses around the sun.

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Answer:

the action of magnifying something or the process of being magnified

Answer:

1 : the act of magnifying. 2a : the state of being magnified. b : the apparent enlargement of an object by an optical instrument. — called also power

Explanation:

The actual formula for volume for a cube is the length multiplied by the width and then multiplied by the height. Since all three measurements are the same, the formula results in the measurement of one side cubed. For the example, 5^3 is 125 cm^3. Multiply the volume by the known density, which is the mass per volume.

Iron's change in temperature is 20.75

Definitions of temperature change a process whereby the degree of hotness of a body or medium changes

Here given data is boiling water of metal 100°C and then placed in a calorimeter containing 50.0g of water

We have to calculate iron's change in temperature = ?

So ΔT = q/mc

Mass of iron = 58.84g

c = specific heat of water = 4.2J/g°C

ΔT = final temperature - initial temperature =

q =  58.84g × 4.2J/g°C = 247.12J

ΔT = q/mc

ΔT = 247.12J/50.0g × 4.2J/g°C

ΔT = 20.75

Iron's change in temperature 20.75

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a) The concentration of the HCl solution is 0.1 M.

b) The concentration of the H₂SO₄ solution is 0.1872 M.

a) To solve both of these problems, we can use the formula M₁V₁ = M₂V₂, where M₁ is the concentration of the first solution, V₁ is the volume of the first solution used, M₂ is the concentration of the second solution, and V₂ is the volume of the second solution used.

For the first problem, we are given that 40 mL of a 0.25 M NaOH solution neutralizes 100 mL of an HCl solution. We can use the formula to solve for the concentration of the HCl solution:

0.25 M x 40 mL = M₂ x 100 mL

M₂ = (0.25 M x 40 mL) / 100 mL

M₂ = 0.1 M

b) For the second problem, we are given that 72 mL of a 0.65 M NaOH solution neutralizes 125 mL of an H₂SO₄ solution. However, H₂SO₄ is a diprotic acid, meaning that it can donate two hydrogen ions (H⁺) per molecule.

Therefore, we need to account for this when calculating the concentration of the H₂SO₄ solution:

0.65 M x 72 mL = 2 x M₂ x 125 mL

M₂ = (0.65 M x 72 mL) / (2 x 125 mL)

M₂ = 0.1872 M

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Answer:

+3

Explanation:

Let's consider the chemical formula XN. It must be formed by a cation coming from X and an anion coming from N. Nitrogen has only one negative charge: -3. We know, that the sum of the charges of the elements that form a compound is equal to the charge of the compound. considering XN is a neutral compound (charge 0), we can use this information to calculate the charge of X.

X + N = 0

X + (-3) = 0

X = +3

In the given reaction N2 + O2 ⇌ 2NO, the partial pressure of NO(g) at equilibrium is given as 3.00 atm. We need to calculate the partial pressures of N2(g) and O2(g) at equilibrium in a 10.0 L vessel initially filled with N2(g) and O2(g) at different pressures and heated to 500K.

To calculate the partial pressures of N2(g) and O2(g) at equilibrium, we can use the concept of equilibrium constant (Kp) and the ideal gas law. Since the reaction is N2 + O2 ⇌ 2NO, the equilibrium constant expression is Kp = [NO]^2 / [N2] [O2]. Given that the partial pressure of NO at equilibrium is 3.00 atm, we can substitute this value into the expression as 3.00^2 / [N2] [O2].

Next, we can express the initial pressures of N2 and O2 in terms of their partial pressures using Dalton's law of partial pressures. Since the vessel is rigid, the sum of the partial pressures of N2 and O2 at equilibrium must equal the initial total pressure. We can set up an equation using this information.

By solving the equation, we can determine the partial pressures of N2 and O2 at equilibrium. Substituting these values into the equilibrium constant expression will help verify if the calculated partial pressures satisfy the equilibrium condition.

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If a clear solution is treated with hydrochloric acid and a green solution or green coloration appears, it indicates the presence of copper in the solution. This is because copper ions react with hydrochloric acid to form a green solution of copper(II) chloride.

On the other hand, silver ions will not react with hydrochloric acid and therefore, the absence of any color change indicates that silver is not in the solution. It is important to note that this is just one of many tests that can be performed to identify and separate metals in a complex mixture, and it requires careful consideration and analysis of the specific properties of each metal in the mixture.

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Answer: Increasing the concentration of a base will cause the pH level of the solution to increase. Increasing the concentration of an acid will cause the pH level of the solution to decrease.

Explanation:

The water molecule has two distinct ends, each with a partial electrical charge. because of this structure, water is said to be polar.

The term "polar" in chemistry refers to a molecule having two distinct ends with opposite electrical charges. In the case of a water molecule (H2O), it consists of two hydrogen atoms bonded to one oxygen atom.

The oxygen atom in water is more electronegative, meaning it has a stronger attraction for electrons compared to hydrogen.

As a result, the shared electrons in the covalent bonds between oxygen and hydrogen are pulled closer to the oxygen atom, creating an uneven distribution of charge.

This electron-pulling effect causes the oxygen atom to have a partial negative charge (δ-) while the hydrogen atoms acquire partial positive charges (δ+). This separation of charges creates a dipole moment within the molecule, making it polar.

Due to the polar nature of water, the positive ends of water molecules (hydrogen atoms) are attracted to the negative ends (oxygen atoms) of neighboring water molecules, forming hydrogen bonds.

These intermolecular forces contribute to several important properties of water, such as its high boiling point, surface tension, and ability to dissolve many substances.

Overall, the polarity of water is a fundamental characteristic that influences its behavior and plays a crucial role in many biological, chemical, and physical processes.

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The volume of water added to dissolve potassium hydrogen phthalate (KHP) does not matter because the mass of KHP used is known and it will dissolve completely in any volume of water.

In volumetric analysis, the primary objective is to find the exact concentration of an analyte in a given solution. Analyte refers to the substance whose concentration is to be determined.In order to measure the analyte concentration, the known volume of the titrant of known concentration is added to the analyte until the endpoint is reached.Endpoint refers to the point in a titration where the reaction between the analyte and titrant is complete. The endpoint can be detected by observing a physical change in the system.In the case of KHP, it dissolves completely in any volume of water.

Therefore, the mass of KHP used can be accurately measured and dissolved in any volume of water. As a result, the volume of water added to dissolve the KHP does not affect the accuracy of the experiment.In summary, the volume of water added to dissolve KHP does not matter because the mass of KHP used is known and it will dissolve completely in any volume of water.

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Answer: 0.638 moles

Explanation: A total of 0.638 moles of neon are needed to occupy a volume of 14.3 L at standard temperature and pressure (STP).

Nitrogen is an element that is present in the atmosphere but in a large amount and also makes up the earth's atmosphere up to 78%.

We know that the most abundant elements which are present in the earth's atmosphere are gases, so gas is the most common and abundant element in the earth's atmosphere.

The most abundant naturally occurring gas in the earth's atmosphere is nitrogen (N2). Nitrogen makes up 78% of the earth's atmosphere while oxygen is the second most abundant naturally occurring gas in the earth's atmosphere which is about 21%. The inert gas Argon is also present in the earth's atmosphere and is the third most abundant gas in the earth's atmosphere which is about 0.93%.

So we can conclude that the most abundant element in the earth's atmosphere is nitrogen which makes the atmosphere up to 78%.

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To determine the empirical formula, we need to find the simplest whole-number ratio of the elements present in the compound.

Calculate the moles of each element:

Carbon: 0.6480 g / 12.01 g/mol = 0.05395 mol

Hydrogen: 0.1362 g / 1.008 g/mol = 0.135 mol

Oxygen: 0.2158 g / 16.00 g/mol = 0.01349 mol

Determine the ratio of the moles of each element. Divide each mole value by the smallest mole value:

Carbon: 0.05395 mol / 0.01349 mol ≈ 4

Hydrogen: 0.135 mol / 0.01349 mol ≈ 10

Oxygen: 0.01349 mol / 0.01349 mol = 1

Based on the ratio, we can write the empirical formula: C4H10O.

To find the molecular formula, we need the molecular weight of the compound. Given that the molecular weight is 74.14 g/mol, we can compare it to the empirical formula's weight (58.14 g/mol: 4 * 12.01 g/mol + 10 * 1.008 g/mol + 16.00 g/mol).

Calculate the factor by which the empirical formula must be multiplied to get the molecular weight:

Factor = Molecular weight / Empirical formula weight

= 74.14 g/mol / 58.14 g/mol

≈ 1.276

Multiply the subscripts in the empirical formula by the factor to obtain the molecular formula:

C4 * 1.276 = C5.104 ≈ C5

H10 * 1.276 = H12.76 ≈ H13

O1 * 1.276 = O1.276 ≈ O1

Therefore, the molecular formula is C5H13O.

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Answer:

i. Atomic radius of an atom is defined as the total distance from the nucleus to the outermost shell of the atom.

On moving from left to right  ( Mg, K) in a period, more and more electrons get added up in the same shell and the attraction between the last electron and nucleus increases, which results in the shrinkage of size of an atom. Thus, decreasing the atomic radii of the atom on moving towards right of the periodic table.

As moving from top to bottom, there is an addition of shell around the nucleus and the outermost shell gets far away from the nucleus and hence, the distance between the nucleus and outermost shell increases.

Thus the order of atomic radii is : Ca > Mg > K

ii. The energy required to remove the last valence electron from isolated gaseous atom (first ionization energy) increases as we move from left to right in a period. It decreases on moving from top to bottom.

Thus the order of first ionization energy is : K > Mg > Ca

iii. The chemical properties depend on the valence elctrons and as the elements Mg and Ca both have two valence electrons , they have same chemical properties.

Answer:

Atomic radius

Explanation:

Hope this helps!

Answer:

Your answer is correct and perfect.

Answer:

elements hope this answer helps you out! :)

Answer:

Elements

Explanation:

Water = water

Carbon Dioxide = gas

Answer: False

Explanation:

An acid is defined as the substance which looses hydrogen ion or hydronium ions when dissolved in water.

A base is defined as the substance which looses hydroxide ions when dissolved in water.

If the solution has higher hydronium ion concentration as compared to the hydroxide ion concentration, then the pH will be low and the solution will be acidic.

If the solution has low hydronium ion concentration as compared to the hydroxide ion concentration then the pH will be high and the solution will be basic.

The cation and anion then attract one another through the Coulomb force to form an ionic bond. Each ionic bond is formed between two oppositely charged ions, such as a sodium ion and a chloride ion.  Ionic bonding typically occurs between a metal and a nonmetal. Therefore, option B is the correct answer.

Ionic bond forms between a cation and an anion. Ionic bonds occur when a cation (positive ion) interacts with an anion (negative ion) through the Coulomb force. This electrostatic interaction is so powerful that the two ions become inseparable.The correct option is B. A cation and an anionIonic bonding is a type of chemical bonding in which ions with opposite charges are held together by electrostatic attraction. Ionic bonding takes place when one atom completely removes an electron from another, creating ions. When this occurs, the atom that has lost the electron becomes a cation, and the atom that has gained the electron becomes an anion. The cation and anion then attract one another through the Coulomb force to form an ionic bond. Each ionic bond is formed between two oppositely charged ions, such as a sodium ion and a chloride ion.  Ionic bonding typically occurs between a metal and a nonmetal. Therefore, option B is the correct answer.

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Answer:

It's called "Great conjunction"

a. The chemical reaction can be rewritten as a word equation as follows:

Hydrogen Peroxide -> Oxygen + Water

b. Evidence that a chemical reaction has occurred includes the production of a new substance (oxygen and water), a change in the physical properties of the reactants (change in color, odor, or temperature), and the release of energy (evolution of oxygen gas).

c. The reaction is likely exothermic, which means it releases energy. This is because the reaction produces new substances (oxygen and water) and releases energy in the form of oxygen gas. In an endothermic reaction, the reactants would absorb energy from the surroundings.

Electrical energy is the energy stored in an electric field, and it is related to the voltage across a capacitor and the charge stored on its plates. When a capacitor is charged, energy is stored in the electric field between the plates, and this energy can be released when the capacitor is discharged.

The electrical energy stored in a capacitor is given by :-E = (1/2) * C * V²

where E is the electrical energy stored, C is the capacitance of the capacitor, and V is the voltage across the capacitor.

Magnetic energy is the energy stored in a magnetic field, and it is related to the current flowing through an inductor and the magnetic flux through its coils.

When an inductor is energized, energy is stored in the magnetic field around the coils, and this energy can be released when the inductor is de-energized. The magnetic energy stored in an inductor is given by:

E = (1/2) * L * I^2

where E is the magnetic energy stored, L is the inductance of the inductor, and I is the current flowing through the inductor.

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Answer:

0.690g/cm^3

Explanation:

•Mass: 2.331g

•Volume: 3.375 cm^3

One side is 1.5cm.

1.5^3

3.375cm^3

•Density: Mass/Volume

Mass = 2.331g

Volume = 3.375cm^3

2.331g/3.375cm^3

0.690g/cm^3