attempts lft C Check my work Click the "draw structure" button to activate the drawing utility. Draw the major product formed when the following alkene is treated with HCl. 0 edit structure..

Answer:

Only Reaction 1

Explanation:

In reaction 1, there is a change in state from solid to liquid. Hence, there is an increase in number of ways particles and their energies could be arranged. As a result, entropy increases.

In reaction 2, there is a decrease in amount of gas particles (4 mol to 2 mol). Hence there is a decrease in the number of ways particles and their energies could be arranged. As a result entropy decreases

Only Reaction 1 will lead to an increase in entropy.

This is the degree of disorderliness or randomness of a particle and it is

denoted as S.

In states of matter, conversion from solid to other states such as liquid

brings about increase in entropy which is why only reaction 1 experienced

this phenomenon.

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The final answer is  1.8 × 102 L of Rn, measured at STP, are produced per day by 1.08 g of Ra.

In order to determine the amount of radon that is produced per day by 1.08 g of Ra, it is essential to calculate the number of Rn atoms that are produced per second.

In the given question, it is known that 1.00 × 1015 atoms of radium produce an average of 1.373 × 104 atoms of Rn per second.

Therefore, we can use this ratio to calculate the number of Rn atoms that are produced per day by 1.08 g of Ra. Once we know the number of Rn atoms produced per day, we can calculate the volume of Rn produced by using the ideal gas law.

The final answer is  1.8 × 102 L of Rn, measured at STP, are produced per day by 1.08 g of Ra.

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Answer:

Ernest Rutherford

Explanation:

The Rutherford model, proposed originally in 1911, dipicts a planetary model of the atom in which there is a nucleus and electrons circling it.

Answer:

Niels Bohr

Explanation:

The concentration in mol/dm³ of the ammonia used is 2.07 mol/dm³

3NH₃ (aq) + H₃PO₄ (aq) -> (NH₄)₃PO₄ (aq)

From the balanced equation above,

MaVa / MbVb = nA / nB

(1.25 × 25) / (Mb × 45.3) = 1 / 3

31.25 / (Mb × 45.3) = 1 / 3

Cross multiply

Mb × 45.3 = 31.25 × 3

Divide both side by 45.3

Mb = (31.25 × 3) / 45.3

Mb = 2.07 mol/dm³

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Answer:

C. size and shape

Explanation:

Physical properties such as size, shape, color, density, magnetism or the

ability to sink or float can be used to separate the substances in a mixture..

Filtration is when matter is passed through a filter and the larger particles

are separated out. Magnets can be used to separate magnetic matter from

non-magnetic matter in a mixture. Objects that float when placed in water

can be separated from those that don’t by placing the mixture in water.

A system of linear equations to balance the following chemical reaction:

Limestone, CaCO₃, neutralizes the acid, H₃ O, in acid rain is:

2H₃O + CaCO₃ → 3H₂O + Ca + CO₂

To balance the chemical equation:

H₃O + CaCO₃ → H₂O + Ca + CO₂

We need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's assign variables to the coefficients of each compound:

H₃O: x

CaCO₃: y

H₂O: z

Ca: a

CO₂: b

Now, we can set up the system of equations based on the number of atoms for each element:

For hydrogen (H):

3x = 2z

For oxygen (O):

3x + 3y = 2z

For calcium (Ca):

y = a

For carbon (C):

y = b

For calcium (Ca):

a = 1

Solving this system of equations will give us the balanced coefficients. Let's solve it:

From the equation y = a, we have y = 1.

From the equation y = b, we have b = 1.

Substituting b = 1 into the equation 3x + 3y = 2z, we have:

3x + 3 = 2z

From the equation 3x = 2z, we have x = (2/3)z.

Substituting x = (2/3)z into the equation 3x = 2z, we have:

3(2/3)z = 2z

2z = 2z

This equation is true for any value of z, indicating that z can take any value.

Therefore, we can choose z = 3 to simplify the coefficients:

x = (2/3)z = (2/3)(3) = 2

y = 1

z = 3

a = 1

b = 1

Thus, the balanced equation is:

2H₃O + CaCO₃ → 3H₂O + Ca + CO₂

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Answer:

Whyyy

Explanation:

The mole should be considered a base unit in the SI system because it is widely used in chemical calculations as a standard unit for counting the number of particles in a substance. The mole allows for easy and accurate calculation of the amount of substance, which is a crucial aspect in many chemical processes. In addition, the mole is defined as the number of entities in a substance, such as atoms, molecules, or ions, and its definition is based on Avogadro's constant. The mole also has practical applications in fields such as pharmacology and environmental science, where the measurement of a specific quantity of a substance is essential.

In conclusion, the mole is a necessary unit for the SI system of units due to its widespread use in chemical calculations and its important role in accurately measuring the amount of substance in a variety of scientific disciplines.

Answer:

The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates that encloses and protects the vital organs such as the heart, lungs and great vessels.

Hope that helps. x

35.7 x 1atm/760 torr = 0.0470 atm

P(ethene) = P(total) - P(water) = 0.822atm - 0.0470atm = 0.775atm

n= PV/RT = (0.775atm)(0.0854L)/(0.08206L atm mol-1 K-1)(305K) = 0.00264mol.

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Answer:

A

Explanation:

Because of the cathode

The molarity of solute z in this solution is 2.12 mol/L.

29% (by mass) indicates that there are 29 grams of solute in 100 g of solution.

We may therefore determine our volume by using the solution density.

We know that density = mass/volume

We are given, density of solution = 1.2 g/mL and mass of solution = 100 g

So, \(volume=\frac{mass}{density}\)

or, volume of solution = 100/1.2 = 83.33 mL

In light of the fact that we have just learned that 29 g of solute z are present in 83.33 mL, we must first determine its mass in 1 L before calculating its molarity.

We have, 1 L = 1000 mL

and 83.33 mL has 29 g of solute

So, 1000 mL solution will have = (29 × 1000)/83.33 g of solute = 348.01 g

We may determine the moles using the molar mass (formula weight).

We have, moles = mass/molar mass

molarity = 348.01/164

or, molarity = 2.12 mol/L

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Complete question:

We have an aqueous solution that contains 29% (by mass) of a hypothetical solute z. The formula weight of the solute z is 164 g/mol. The density of the solution is observed to be 1.2 g/mL. What is the molarity of z in this solution? Answer in units of mol/L.

Answer:

False

Explanation:

From what I know about water and gas, this is false

the only time electrons are equal to protons is when the charge is neutral. if the charge is positive then there's more protons.

if the charge is negative then there's more electrons.

The partial pressure of O2 in the blood in the superior vena cava is around 40 mmHg, while the partial pressure of CO2 is around 46 mmHg. These levels influence the pH value of the blood because they affect the production and removal of carbonic acid, which is an important buffer system in the body. High levels of CO2 lead to the production of carbonic acid, which makes the blood more acidic, while low levels of CO2 result in the breakdown of carbonic acid, which makes the blood more alkaline.

The blood returning from the body to the heart via the superior vena cava has already delivered oxygen to the tissues and picked up carbon dioxide, which has been produced as a byproduct of metabolism. This results in partial pressure of O2 of around 40 mmHg and CO2 of around 46 mmHg in the blood in the superior vena cava.

The levels of O2 and CO2 in the blood affect the pH value of the blood because they influence the production and removal of carbonic acid, which is an important buffer system in the body.

When CO2 levels are high, carbonic acid is produced, which lowers the pH of the blood and makes it more acidic. Conversely, when CO2 levels are low, carbonic acid is broken down, which raises the pH of the blood and makes it more alkaline.

Therefore, the levels of O2 and CO2 in the blood are closely linked to the pH value of the blood, and any disruptions in these levels can lead to acid-base imbalances and other health problems.

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Solution :

Sir Isaac Newton was a great scientist. The discoveries of the Newton change the way we see the world. Newton gave us the fundamental principles through which the entire universe is governed.

Newtons 1st law of motion states that a body moves or stays in position until and unless an external force is applied to the body.

This is the law of nature.

An example which do not support this law can be a body having a huge mass and a small boy applies force to move it but is unable to move the body.

The environmental impact of electric car batteries depends on the source of the electricity used to charge them and the method of disposal or recycling of the batteries.

If the electricity used to charge the batteries comes from renewable sources, the environmental impact is minimal. However, if the electricity comes from fossil fuels, the environmental impact can be significant. Additionally, proper disposal or recycling of batteries is important to minimize environmental impact. The environment refers to the natural surroundings and conditions in which people, animals, and plants live. It includes everything from the air we breathe, the water we drink, the land we live on, and the weather patterns that affect us.

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The addition of a solution that contains a high concentration of calcium ions (Ca2+) would cause precipitation to occur more easily in sea water than in tap water.

This is because sea water already contains a significant amount of calcium ions, and the addition of more calcium ions would cause them to react with the carbonate ions (CO32-) present in sea water to form calcium carbonate (CaCO3), which is a common type of precipitation in sea water. In tap water, the concentration of calcium ions is much lower, so the addition of a calcium solution would not cause precipitation to occur as easily as in sea water. The main salt components of seawater include Na, K, Mg2+, Ca2+, Sr2+, Cl-, SO42-, HCO3-, Br-, and F-. Precipitation occurs more easily in seawater than in tap water when a solution is added that reacts with these ions, forming insoluble compounds. One such solution is one containing carbonate ions (CO32-), which can react with Ca2+ and Mg2+ ions in seawater to form insoluble calcium carbonate (CaCO3) and magnesium carbonate (MgCO3). This reaction leads to the precipitation of these salts, which is more likely to happen in seawater due to its higher concentration of Ca2+ and Mg2+ ions compared to tap water.

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1. Ion: An ion is an atom or molecule that has a net electrical charge due to the gain or loss of one or more electrons. An ion with a positive charge is called a cation, while an ion with a negative charge is called an anion.

2. Valence electron: The valence electron is an electron that is found in the outermost shell of an atom, and it is involved in the formation of chemical bonds with other atoms. The number of valence electrons is determined by the element's position in the periodic table, and it is a key factor in the element's chemical reactivity.

The sub-atomic particle that determines the overall mass of an atom is the neutron, while the overall size of an atom is determined by the electron cloud.

For each of the following elements:

1. Carbon: Chemical symbol = C; Located in group 14 (IV A) of the periodic table; Non-metal.

2. Silicon: Chemical symbol = Si; Located in group 14 (IV A) of the periodic table; Metalloid.

3. Iron: Chemical symbol = Fe; Located in group 8 (VIII B) of the periodic table; Metal.

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The change of energy between the steam generator and the turbine is from thermal energy (steam) to mechanical energy (rotation).

In a typical steam power plant, the steam generator produces high-pressure and high-temperature steam by heating water using a heat source such as coal, natural gas, or nuclear energy. This steam carries a significant amount of thermal  . The steam is then directed to the turbine, where the high-pressure steam flows through the turbine blades, causing them to rotate. As the steam passes through the turbine, its thermal energy is converted into mechanical energy. The rotating motion of the turbine shaft is used to drive a generator, which produces electrical energy. Therefore, the change of energy between the steam generator and the turbine involves the conversion of thermal energy in the form of steam into mechanical energy in the form of rotation.

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Answer:

There are mechanical energies. These consist of kinetic energy and gravitational potential energy.

Kinetic energy is the energy an object contains when it is in motion. Ex.: A car moving, a ball falling off of a building.

Gravitational potential energy is the potential for an object to do work at a certain height. If a 1 kg ball is placed 1 meter high, it has 9.8 Joules of potential energy, represented with the equation, Ug=mgh.

There are Non-Mechical Energies, which I assume you are trying to get. There is Thermal Energy, Electrical Energy, Light, Sound, Nuclear Energy, and Chemical Energy.

Thermal Energy is essentially heat. Friction causes thermal energy.

Electrical energy is potential difference. It is the work that can be done by a point charge.

Nuclear energy is like fission and fusion

Chemical energy is energy from chemical processses. Think, photosynthesis for example.

Sound is molecules hitting other molecules. It occurs a lot with friction as well.

Light is, well, you know what light is.

Explanation:

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The bottoms of waste dumps should be lined with impermeable materials like clay or synthetic liners to protect aquifers from pollution.


Waste dumps can contain hazardous materials that can seep into the soil and contaminate groundwater, including aquifers, which are important sources of drinking water. Lining the bottoms of waste dumps with impermeable materials helps prevent these contaminants from leaching into the groundwater. Impermeable liners can include clay, plastic, or synthetic materials, and they are designed to create a barrier that prevents the movement of water and pollutants.

Lining the bottoms of waste dumps with impermeable materials is an important measure to protect the quality of groundwater and aquifers. It is important to properly design and maintain these liners to prevent leaks and ensure their effectiveness in preventing pollution.


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0.112 L CO₂ is the volume of carbon dioxide.

Glucose ferments decompose to form the ethanol and carbon dioxide.

Balanced equation :  C₆H₁₂O₆  ----> 2C₂H₅OH (aq) + 2CO₂ (g)

By using formula, M= m/n

Where,

M⇒ Molar mass

m⇒ Mass of a substance (in grams)

n⇒ Number of moles of a substance

The molar mass (M) of C₆H₁₂O₆ (aq) ⇒180.156 g/mol

Calculating the moles(n) of C₆H₁₂O₆(aq) .

n ⇒ m/M

m ⇒ mass ⇒ 0.9 C₆H₁₂O₆

M ⇒ molar mass

n ⇒180.156g/mol C₆H₁₂O₆

n ⇒ 0.9g C₆H₁₂O₆/ 180.156 g/mol

n⇒ 0.005 mol C₆H₁₂O₆

Calculating moles(m) of CO₂ :

m⇒0.005 mol CaCO₃× (1 mol CO₂/1 mol  C₆H₁₂O₆)

m⇒ 0.005 mol CO₂

At STP of 273.15 K (0°C) and 1 atm, the molar volume of a gas is 22.414 L/mol.

Calculating volume of CO₂ :

Multiply the mole CO₂ by the molar volume to get the volume of CO₂ in liters.

⇒ 0.005 mol CO₂× 22.414 L/mol

⇒ 0.112 L CO₂  to three significant figures

Converting volume CO₂ in L to mL.

⇒ 0.112 L CO₂ × 1000 mL/L

⇒ 112.07 mL CO₂

Volume of CO₂ ⇒ 0.112 L CO₂  or 112.07 mL CO₂

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Answer:

670,385k

Explanation:

Answer:

toward

Explanation:

To increase the size of the shadow move object towards the light

The answer to the question is c. The library studies may yield a number of possible framework pieces to build into a good drug.                                                                                                                                                                                              

Modern drug discovery is a complex and time-consuming process that involves screening large libraries of compounds to identify potential candidates for further development. While the ultimate goal is to find a new drug that is effective against a specific disease or condition, it is often the case that the initial screening process yields multiple compounds that may be useful in developing a new drug.
This process is essential for addressing evolving health challenges and improving therapeutic options. While not every search guarantees a new candidate drug, the possibility of finding multiple framework pieces makes these studies valuable in drug discovery.

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Answer:

Ca2+ is cation

Explanation:

Because cation contain positive charge.

The statement "Cis refers to Z configuration" is True.

In chemistry, the letter "Z" is frequently used as a image to represent the atomic wide variety. The atomic number of an detail shows the range of protons located within the nucleus of an atom. Each element has a completely unique atomic wide variety, which determines its function at the periodic table and distinguishes it from other elements. For instance, hydrogen has an atomic number of one, indicating it has one proton, while oxygen has an atomic quantity of 8, representing eight protons in its nucleus. The atomic quantity plays a essential function in figuring out the chemical properties and conduct of factors. It affects the element's electron configuration, bonding capabilities, and universal reactivity. By know-how the atomic quantity, scientists can are expecting how factors will have interaction with different materials and the way they will form compounds. Therefore, the letter "Z" is generally used as a shorthand notation to symbolize the atomic quantity in chemical equations, formulation, and discussions in the field of chemistry..

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Cis refers to the "Z" configuration. Thus, the statement is true.

In organic chemistry, the term "cis" is used to describe the "Z" configuration. In the context of a double bond, "cis" signifies that the substituent groups are positioned on the same side of the double bond, while "trans" indicates that they are on opposite sides.

Similarly, in a cyclic structure, "cis" denotes that the substituent groups are located on the same face of the ring, whereas "trans" signifies that they are on opposite faces.

The "Z" configuration specifically represents the cis configuration, and it is a notation employed to indicate this arrangement in organic chemistry. On the other hand, the "E" configuration is used to represent the trans configuration.

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The correct question is:-

State whether the statement "cis refers to 'Z' configuration" is true or false.