Below are 4 reactions. For each, indicate what reaction pathway lead to each major product shown. Discuss the factors that led you to each decision. Use each pathway (SN1, SN2, E1, and E2) only one time. Where there any reactions where you had a more difficult time deciding versus others? Draw an arrow-pushing mechanism for each reaction to clearly show the electron movement which led to each major product shown.

The number of seconds in a 40-hour work week can be  c. 40 h x

You work a regular 40-hour workweek (eight hours a day).

That persisted up until 1926, when Henry Ford let his workers off the hook for one day of obligatory labour. Eight-hour days and six-day weeks totaled 48 hours of labour each week for Ford employees. The 40-hour workweek, as it is currently known, was created by eliminating one day and replacing it with five days of eight-hour shifts.

Four nine-hour days followed by an eight-hour Friday is the most typical pattern for doing this. The next week consists of four nine-hour days and a Friday off.

A full-time employee is one who works an average of at least 30 hours per week for the duration of a calendar month in order to qualify under the employer shared responsibility laws.

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Answer:

I think is d.

Explanation:

particles that make up the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. the Instability of an atom's nucleus may result from an excess of either neutrons or protons.

I'm not sure, but hope it helps.

Forming very strong bond characteristics indicates that an atom is unstable. Hence, option D is correct.

An atom is any particle of matter which contains at least one proton.

An atom is unstable if the nucleus has an excess of internal energy.

The Instability of an atom's nucleus may be due to an excess of either neutrons or protons.

Hence, forming very strong bond characteristics indicates that an atom is unstable.

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Answer:

We know that there are three astronauts and each one of them emits 500 grams of carbon dioxide each day, so the total carbon dioxide emitted each day.

Explanation:

From the mole ratio of the reaction, there is not enough sodium hydroxide in the cabin to cleanse the cabin air of the carbon

The mass of sodium hydroxide required depends on the mass of CO2 produced by the astronauts.

The mass of CO2 produced by the astronauts is calculated as follows;

Mass of CO2 produced = 3 × 2 × 500 g = 3000 g of CO2

The mass of sodium hydroxide required is calculatedfrom the eqaution of the reaction given below:

2 moles of sodium hydroxide reacts with 1 mole of CO2

Molar mass of NaOH = 40 g/mol

Molar mass of CO2 = 44 g/mol

Mass of sodium hydroxide required = 3000 g × 2 × 40/44 = 5454.54 g

Therefore, there is not enough sodium hydroxide in the cabin to cleanse the cabin air of the carbon.

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Approximately 845 Joules of energy must be added to raise the temperature of the nitrogen gas from 298 K to 293 K while allowing the balloon to expand at atmospheric pressure.

Given:

Initial temperature (T(i)) = 298 K (25 degrees Celsius)

Final temperature (T(f)) = 293 K (20 degrees Celsius)

Volume of nitrogen gas (V) = 200.0 L

Molar heat capacity of nitrogen (C v) = 20.8 J/(mol· K) approximately (at room temperature)

Let's calculate the amount of energy required:

Step 1: Calculate the number of moles of nitrogen gas (n)

n = (P × V) / (R × T)

Assuming P = 1 atm,

n = (1 atm * 200.0 L) / (0.0821 L· atm/(mol· K) * 298 K) ≈ 8.11 moles

Step 2: Calculate the absolute value of the change in temperature (ΔT)

ΔT = |T(f) - T(i)| = |-5 K| = 5 K

Step 3: Calculate the amount of energy (Q)

Q = n * C v * ΔT = 8.11 moles * 20.8 J/(mol· K) * 5 K ≈ 845 J

Therefore, approximately 845 Joules of energy must be added to raise the temperature of the nitrogen gas from 298 K to 293 K while allowing the balloon to expand at atmospheric pressure.

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Answer:

elements in the same period have the same number of shells

the period number the element is in, that is the number of shells it has.

Answer: Copper(I) sulfate, also known as cuprous sulfate and dicopper sulfate, is the chemical compound with the chemical formula Cu2SO4 and a molar mass of 223.15 g mol−1. It is an unstable compound as copper(I) compounds are generally unstable and is more commonly found in the CuSO4 state. It is white in color at room temperature and is water-soluble. Due to the low-stability of the compound there are currently not many applications to date.

Based on the given information, we can validly conclude that the gas in the hot box has higher temperature than the gas in the cold box.

Temperature is a measure of the average kinetic energy of the molecules in a substance. The higher the temperature, the higher the average kinetic energy of the molecules. Since we know that one box contains hot gas and the other contains cold gas, we can infer that the hot gas has a higher temperature, and therefore, the molecules in the hot gas have greater average kinetic energy than those in the cold gas.

We can also make additional conclusions based on the given information. Option A - "The molecules in the hot gas have higher average velocity than those in the cold gas" is also valid, as higher kinetic energy leads to higher velocity. Option B - "The molecules of the hot gas have more total kinetic energy than those of the cold gas" is also true, as the total kinetic energy of a substance is directly proportional to its temperature.

Option D - "The pressure of the hot gas is greater than that of the cold gas" cannot be concluded based on the given information alone, as pressure depends not only on temperature but also on volume and the number of gas molecules. Option E - "There are more air molecules in the hot air box than in the cold air box" also cannot be validly concluded based on the given information alone.

In summary, based on the given information, we can validly conclude that the gas in the hot box has higher temperature, greater average kinetic energy, and higher average velocity than the gas in the cold box. Therefore, option C is the correct answer.

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Arts helps us to understand the world with the help of textures and deepness of the art. Science is the only way with the help of which we are able to understand the beauty of the nature.

Arts:

Arts gives us meaning and help us to understand the world around us. Even the  Scientific studies have proven that art appreciates improves our life quality of life and makes us feel good. When we create the art then we define our mood, the situations around us, the environment exists around us and open our minds with new ideas.

Science:

First of all the science helps our understanding of the world around us. Every thing we know about the universe, we know how the trees grew up, we know how the habitat exists on the earth, we know that how the weather and climate changes. This is all due to the science. Human progress throughout history has largely rested on advances in science.

So we can conclude that: Arts helps us to understand the world with the help of textures and deepness of the art. Science is the only way with the help of which we are able to understand the beauty of the nature.

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Answer:

A: Both artists and scientists use their imagination to create things.

B: Both artists and scientists rely on others in their field for inspiration.

D: Both artists and scientists use technological innovations to explore new possibilities.

Explanation:

Answer:

I’m not sure probably false

Explanation:

Answer:

God's power is not reflected here.

ANSWER

EXPLANATION

Firstly, we need to define the word titration.

Titration is defined as a technique that is used to determine the known concentration of an unknown solution.

This normally occurs between an acid and a base

During titration, an indicator changes color when equilibrium has been attained between the two solutions. The solutions are normally acid and base. At equilibrium, the number of moles of acid is equal to the number of base.

Therefore, the correct answer is option C

Answer:

92 im not really sure

Explanation:

The calcium ion has 18 protons, 20 neutrons, and 20 electrons.
The relationship between the components a and b is Inverse proportion.


The calcium ion (Ca2+) has a 2+ charge, indicating that it has lost 2 electrons from its neutral state. To determine the number of protons, neutrons, and electrons in the calcium ion, we need to consider its atomic number and mass.

The atomic number of calcium is 20, which indicates that it has 20 protons. Since the calcium ion has a 2+ charge, it means it has lost 2 electrons. Therefore, the number of electrons in the calcium ion is 20 - 2 = 18.

The mass number of calcium is 40 amu, which represents the total number of protons and neutrons. Since the calcium ion has 20 protons, the number of neutrons can be calculated as 40 - 20 = 20.

So, the correct option is: d. 18 protons, 20 neutrons, and 20 electrons

In the expression a∼1/b, the relationship between the components a and b is an inverse proportion. This means that as the value of a increases, the value of b decreases, and vice versa. The symbol ∼ represents the proportional relationship between a and 1/b, indicating that they are inversely related. Therefore, the correct answer is: Inverse proportion

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The pH of a solution with a weak acid concentration of 0.0460 M and a salt of its conjugate at a concentration of 1.31 M, resulting in a percent ionization of 0.0054, can be calculated using the Henderson-Hasselbalch equation and the concept of acid-base equilibrium.

The Henderson-Hasselbalch equation relates the pH of a solution to the concentrations of the weak acid and its conjugate base:

pH = pKa + log([A-]/[HA])

In this equation, pKa is the negative logarithm of the acid dissociation constant (Ka), [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.

To calculate the pH, we need to determine the pKa value of the weak acid. However, the given information does not provide the pKa directly.

Since we know the percent ionization of the weak acid, we can assume that it is a very weak acid, and the percent ionization is significantly less than 5%. Therefore, we can approximate the percent ionization to be negligible, indicating that [A-] ≈ 0 and [HA] ≈ initial concentration of the weak acid.

Using this approximation, we can rewrite the Henderson-Hasselbalch equation as:

pH ≈ pKa + log(0/0.0460)

Since log(0) is undefined, we can conclude that the concentration of the conjugate base is negligible, and the weak acid is mostly unionized.

Therefore, the pH of the solution is primarily determined by the concentration of the weak acid, which is 0.0460 M.

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Answer:

Explanation:

7 carbon atoms, 6 hydrogen atoms,9 NO2 atoms

7+6+9=22

2(22)=44

44 atoms

A conjugate base solution with a pH between 8 and 10 has little buffer capacity, however at higher pHs, the strong base's presence begins to matter more.

Because of the large concentration of H + cations, a pure acetic acid solution with a pH below 3 already has a pH that is resistant to changes. This is because the concentration of the capacity is so high that it is unaffected by changes in the equilibrium of the solution brought on by the concentration of other ions. Why is a buffer more effective if its pKa is close to the pH? Why does a buffer function best when pH and pKa are equal? Why does increasing the pH by a basic or an acid.

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Answer: B

Explanation: molarity = concentration c= n/V = 0.5 mol/ 0.05 l = 10 mol/l

The molarity of  a solution is the number of moles of its solute divided by volume in liters. The molarity of the 50 ml solution containing 0.5 moles of potassium fluoride is 10 M or 10 molar.

Molarity is a common term used to express the concentration of a solution. It is the ratio of number of moles of solute particles to the volume of solution in liters. Hence, its unit is mol/L or molar.

The molarity of a solution is a colligative quantity as well as temperature dependent.

Given,

no.of moles of potassium fluoride salt in water = 0.5 moles.

volume of solution = 50 ml

1 L = 1000 ml

then 50 ml = 0.05 L.

Molarity = no.of moles of solute/ volume of solution in L

M = 0.5 moles/ 0.05 L

   = 10 M.

Therefore, the molarity of the given solution is 10 molar.

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Answer:

26 protons, 30 neutrons, and 26 electrons

Explanation:

There are total  26 protons, 30 neutrons and 26 electrons in an Fe atom.

The electron has a negative charge. The symbol for electrons is (e–). An electron’s atomic mass unit is (5.45×10–4). The orbits of electrons are located outside the nucleus of the atoms.

A proton has a positive charge. (p+) is the symbol for protons. The proton’s atomic mass unit is 1. Protons are found within the nucleus of atoms. A proton has a mass of (1.672×10–27 kg).

A neutron is either neutrally charged or uncharged. The symbol for neutrons is (n⁰). The neutron’s atomic mass unit is one. Neutrons are also found inside the nucleus.

These all combinedly makes an atom, hence  there are total  26 protons, 30 neutrons and 26 electrons in an Fe atom.

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The Potential energy of a 100 - kilogram man on a sled at the top of the hill would be 980H, where H is the height of the sled on the top of the hill.

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total potential energy stored energy in the system which is represented by total potential energy.

As given in the problem we have to find out how much PE would a 100 kg man have on a sled at the top of the hill.

The potential energy of the man = 100 × 9.8 × H

                                                      = 980H

Both mass and acceleration due to the gravity of the earth are constant and the only variable is the height of the inclined surface.

Thus, a ball rolling down an incline has its maximum potential energy at the top, therefore the correct answer is option D.

Thus, the Potential energy of a 100 - kilogram man on a sled at the top of the hill would be 980H, where H is the height of the sled on the top of the hill.

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Answer:

cool! Welcome. On this app we help people who need help with schoolwork.

Explanation:

We can tell if a chemical reaction has taken place when one or more of the following things happen:

1.There has been a colour change inside the reaction flask.

2. A gas has formed. Usually we know a gas has formed when we can see bubbles.

3.A solid has formed.

hope this answer helps!!!

Explanation:

A Chemical Reaction Is Usally Accompaneid by easly observed physical effects such as the emissions of heat and light the information of a precipitate the evaluation of gas,or a color change

The temperature is 53°F when you hear 64 chirps per minute.

To find the formula that relates chirp rate to temperature, we can use the two given data points: (104 chirps/min, 63°F) and (176 chirps/min, 81°F).

First, we need to determine the slope of the line connecting these two points:

Slope (m) = (change in temperature) / (change in chirp rate)

= (81°F - 63°F) / (176 chirps/min - 104 chirps/min)

= 18°F / 72 chirps/min

= 0.25°F/chirp/min

Next, we can use the point-slope form of a linear equation to find the equation of the line:

y - y1 = m(x - x1)

Let's choose the first data point (104 chirps/min, 63°F) as (x1, y1):

y - 63°F = 0.25°F/chirp/min * (x - 104 chirps/min)

Simplifying the equation:

y - 63°F = 0.25°F/min * x - 26°F

y = 0.25°F/min * x - 26°F + 63°F

y = 0.25°F/min * x + 37°F

Now we have the equation that relates chirp rate (x) to temperature (y).

To find the temperature when you hear 148 chirps per minute:

y = 0.25°F/min * 148 chirps/min + 37°F

y = 37°F + 37°F

y = 74°F

The estimated temperature is 74°F when you hear 148 chirps per minute.

To find the temperature when you hear 64 chirps per minute:

y = 0.25°F/min * 64 chirps/min + 37°F

y = 16°F + 37°F

y = 53°F

Therefore, estimated temperature is 53°F when you hear 64 chirps per minute.

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Answer:

Cu

Explanation:

.............................

Soap is potassium or sodium salts of a carboxylic acid attached to a long aliphatic chain. Detergent is the potassium or sodium salts of a long alkyl chain ending with a sulfonate group.

Answer:

Explanation

In the Bohr model of the atom, electrons travel in defined circular orbits around the nucleus. The orbits are labeled by an integer, the quantum number n. Electrons can jump from one orbit to another by emitting or absorbing energy.

Answer:

What artifacts did historian Tom Garner find in the Pensacola Bay area?

Fork from Hernando de Soto ship

Plate from Jamestown colony

Olive jar from Tristan de Luna colony of 1559

Telescope from Ponce de Leon

Explanation:

What artifacts did historian Tom Garner find in the Pensacola Bay area?

Fork from Hernando de Soto ship

Plate from Jamestown colony

Olive jar from Tristan de Luna colony of 1559

Telescope from Ponce de Leon

Answer:

Much lower than ketone is more stable than enol. N, 4-Dimethylpent -4-en-2-Amine (NH_3 protonated in acidic protoned in acidic conditions) d. [Proton cannot re extracted from OH in acidic conditions to firm O^(-)]

Answer:

CH2

Explanation:

The empirical formula is the simplest formula of a chemical compound. It shows the ratio in which constituent atoms are combined in the compound.

To obtain the empirical formula, we divide the given mass of each element by the relative atomic mass of that element.

C- 36.0 g/12.0 g         H- 6.0g/1.0g

C- 3                             H-6

Divide through by the lowest ratio;

C-3/3                              H- 6/3

C-1                                  H-2

Hence the empirical formula of the compound is

CH2