what is the oxidation numbers for CaCl3

Answer:

yes

Explanation:

Every carbon atom in the organic molecules that make up your body must recently have been part of a living organism or a plant. This is because carbon is a key component of organic compounds, which are the building blocks of life. When living organisms and plants die and decompose, their organic molecules break down and release carbon into the environment. This carbon can then be used by other living organisms to build new organic molecules, including those found in your body. So, ultimately, every carbon atom in your body can be traced back to a previous living organism or plant.

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The carbon atoms in our bodies most recently belonged to carbon dioxide in the Earth's atmosphere. They become part of us through the carbon cycle, which starts with photosynthesis in plants and continues with our consumption of plants and animals.

Every carbon atom in the organic molecules that make up our bodies was most recently part of carbon dioxide in the Earth's atmosphere. They become part of our bodies through a process known as the carbon cycle. This process begins with photosynthesis, where plants use sunlight to turn carbon dioxide and water into sugars and oxygen. When we consume these plants, or animals that have consumed these plants, the carbon molecules become part of us. Furthermore, the oxygen we breathe also contains carbon, which our bodies convert into organic molecules during respiration.

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Answer:

H2O

Explanation:

Answer:

I think its false hope I helped pliz mark brainlist

Answer:

3500 Ml

Explanation:

1 liter is equal to 1000 milliliters

3.5 liters is equal to 3500 milliliter

Answer:

Released into the atmosphere

Explanation:

The carbon that the plant had been storing when it was alive, would be released upon death into the soil

Answer:

Mass= volume x density

Explanation:

Multiply the density by the volume.

Answer:

The amount of energy that would be burnt in climbing stairs all day is approximately 52,738,560 Joules

Explanation:

The question is with regards to an experiment with details that can be obtained from the U Oregon website

The given parameters of the question are;

The energy consumed by a human each day =  2,500 kcal = 10,450,000 J

The required parameters obtained from U Oregon website are;

The average weight of a student, W ≈ 60 kg × 9.81 m/s² = 588.6 N

The average time it takes a student to run up a flight of stairs = 5.4 s

The height of the stairs, h = 0.2 m × 28 = 5.6 meters

Therefore, we get;

Work done in climbing up the stares = W × h = 588.6 N × 5.6 meters = 3,296.16 J

The height the student can climb in a day is given as follows;

The time of 1 day in seconds, t = 86,400 s

The height the student climbs in 5.4 s = 5.6 m

∴ Vertical velocity, \(v_y\) = 5.6 m/(5.4 s) = (28/27) m/s

The vertical height the student climbs in a day, \(h_{(v \, all \, day)}\) = \(v_y\) × t

∴ \(h_{(v \, all \, day)}\) = (28/27) m/s × 86,400 = 89,600 m

The work done all day = W × \(h_{(v \, all \, day)}\) = 588.6 N × 89,600 m = 52,738,560 J

The amount of energy in joules that would be burnt in climbing stairs all day = The work done all day = 52,738,560 Joules

The speed of the 4 kg ball at the given position is approximately 1.21 m/s.

When a 4 kg ball swings in a vertical circle on the end of a 60 cm long string, and the tension in the string is 20 N when its angle from the highest point on the circle is θ = 30°, we can determine the centripetal force acting on the ball and its speed at that position.

First, let's convert the string length to meters: 60 cm = 0.6 m. At the given angle, we can use the following equation to find the centripetal force (Fc) acting on the ball:

Fc = T - mg * cos(θ)

where T is the tension (20 N), m is the mass of the ball (4 kg), g is the acceleration due to gravity (approximately 9.81 m/s²), and θ is the angle (30°).

Fc = 20 - 4 * 9.81 * cos(30°)

Fc ≈ 9.64 N

Now, we can find the speed (v) of the ball at that position using the centripetal force formula:

Fc = (m * v²) / r

where r is the radius (0.6 m).

Rearranging the formula to solve for v:

v = √(Fc * r / m)

v = √(9.64 * 0.6 / 4)

v ≈ 1.21 m/s

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The 6 models of the atom:

1. John Dalton's atomic model: Daltons Billiard Ball (Solid Sphere) Model

2. J.J. Thomson's model: Plum Pudding model

3. Ernest Rutherford's model: Nuclear model

4. Niels Bohr's model: Planetary model

5. Erwin Schrdinger's model: Electron Cloud Model/Quantum Model

6. Wave mechanical model

The smallest component that makes up a chemical element is an atom. Atoms that are neutral or ionized are the building blocks of all solids, liquids, gases, and plasma. A normal atom is 100 picometers across, which is incredibly small. Because of quantum effects, they are so small that it is impossible to predict their behavior with sufficient precision using classical physics, as if they were, say, tennis balls. One or more electrons are attached to the nucleus of every atom, which is made up of a nucleus. Protons and neutrons, in various numbers, make up the nucleus. Neutrons exist only in the most prevalent type of hydrogen. An atom's nucleus makes up more than 99.94% of its mass.

how to build 6 individual atoms?

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The chemical symbol for gold is "Au", which comes from the Latin word for gold, "aurum". The atomic number of gold is 79, which means that a gold atom has 79 protons in its nucleus.

The chemical formula for gold does not really exist, as it is a pure element and not a compound. However, if gold forms a compound with another element or elements, then the chemical formula would be different depending on the specific compound. It is a dense, soft, yellow, and highly valuable metal that has been prized by humans for thousands of years. Gold is relatively unreactive chemically, which means that it does not readily combine with other elements to form compounds, and it does not tarnish or corrode easily. Because of its properties and scarcity, gold has been used for a variety of purposes throughout human history, including as currency, jewelry, and in electronics and other industrial applications.

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A molecule of ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. A ball-and-stick model of a molecule of ethanol, the black balls in the model represent the two carbon atom.

Alcohols are organic compounds made of the elements' hydrogen (H), oxygen (O), and carbon (C). Alcohol with 2 carbons is referred to as ethanol (also known as ethyl alcohol). Beer, wine, and liquor all include the kind of alcohol known as ethanol.

Ethanol molecules have two carbon atoms apiece. Additionally, this implies that there are two moles of carbon for every mole of ethanol.

Three-dimensional models known as ball and stick models use colored spheres to represent atoms and sticks to indicate bonds between the spheres. Different colors are used to symbolize specific atoms; for instance, black is typically used to represent carbon and white to represent hydrogen.

Thus,  in a ball-and-stick model of a molecule of ethanol, the black balls in the model represent the two carbon atom.

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Explanation:

the pressure and temperature of the air increase

reason:

the volume of the space containing air decreases.

Explanation:

Whether you know it or not, compressed air is involved in every aspect of our lives, from the balloons at your birthday party to the air in the tires of our cars and bicycles. It was probably even used when making the phone, tablet or computer you’re viewing this on.

The main ingredient of compressed air is - you guessed it! - air. Air is a gas mixture, which means it consists of many different gases. Primarily these are nitrogen (78%) and oxygen (21%).

The temperature of the air is directly proportional to the mean kinetic energy of these molecules. This means that the air temperature will be high if the mean kinetic energy is large (and the air molecules move faster). The temperature will be low when the kinetic energy is small.

Compressing the air makes the molecules move more rapidly, which increases the temperature. This phenomenon is called “heat of compression”. Compressing air is literally to force it into a smaller space and as a result bringing the molecules closer to each other. The energy that gets released when doing this is equal to the energy required to force the air into the smaller space. In other words, it stores the energy for future use.

Answer:

Orbital designation

for Principle Quantum number n=4, this is the shell number & corresponds to N shell, (shells are designated K,L,M,N)

for Angular Momentum number l=2, this is the orbital level corresponding to d, given that l can be any integer 0-(n-1), for( 0,1,2,3 )corresponds to (s, p, d, f)

The orbital designation is 4d

for Magnetic Quantum number ml, the suborbitals correspond to -l through l, (-2,-1,0, 1,2)

for ml=-1 the suborbital -1 in the 4d sub shell with electron spin state ms=-1/2

According to the electronic configuration, there are 1,2,3,5 sublevels in first,second,third,fifth energy level respectively,3 f sublevel does not exist as it has only 3 energy levels.

Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.

Energy of the stationary state is given as E= -R

1/n² where R

is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.

They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.

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The reactions in which flow of heat takes place into the system is known as endothermic process.

Heat flow is a process in which transfer of heat takes place from one system to other or from outside to inside or vice-versa.

In in any chemical reaction for the completion of reaction if we have to absorb heat or flow of heat takes place from the outside into the system then that reaction is known as endothermic reaction.

Hence resultant process will be endothermic.

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Answer D. endothemic

Explanation: just took the quiz

Answer:

The answer is 144 mol.

Explanation:

"72 mol of oxygen will form only 144 mol of water, and 10 mol of hydrogen remain in excess, so the limiting reactant is oxygen and hydrogen is in excess."

Answer: cashier

Explanation: because

Answer:

Zinc-64: Number of protons is 30. Number of neutrons 34.

Zinc-66: Number of protons is 30. Number of neutrons 36.

Explanation:

The atomic number of Zinc is 30, so in every Zinc atom, regardless of whether it's an isotope or not, will always have 30 protons.

The atomic number of an equivalent to the number of protons, and never changes.

The isotope number is the sum of the protons and neutrons in the nucleus.

Isotope number = atomic number + neutrons

So if we have 30 protons, and we're trying to find the number of neutrons in Zinc-64 we just subtract 30 from 64.

64 - 30 = 34

So now we know that there are 34 neutrons in Zinc-64

Same thing goes for Zinc-66.

66 - 30 = 36

There are 36 neutrons in Zinc-66.

Hope that's helpful!

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{3.01 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.01}{6.02} = 0.5 \\ \)

We have the final answer as

Hope this helps you

To determine the stability of the given closed-loop transfer functions, we need to analyze the locations of the poles in the complex plane. If all the poles have negative real parts, the system is stable.

If any pole has a positive real part, the system is unstable. If there are poles on the imaginary axis or have zero real parts, further analysis is required.

a) Transfer function: 8Kc / (5S + 1)

The pole of this transfer function is at S = -1/5. Since the real part of the pole is negative, the system is stable.

b) Transfer function: 8Kc / (S^2 + 3S + 2)

The poles of this transfer function are at S = -1 and S = -2. Both poles have negative real parts, so the system is stable.

c) Transfer function: 8Kc / (S^3 + 6S^2 + 12S + 8 + 8Kc)

To determine the stability of this transfer function, we need to find the roots of the polynomial in the denominator. The characteristic equation is S^3 + 6S^2 + 12S + 8 + 8Kc = 0.

By analyzing the roots of the characteristic equation for different values of Kc, we can determine the stability. If all the roots have negative real parts for any value of Kc, the system is stable.

However, without a specific value for Kc provided, we cannot conclusively determine the stability of the system. The stability of the system will depend on the specific value of Kc and the locations of the roots of the characteristic equation. Further analysis is required to determine the stability.

In summary:

a) The system is stable.

b) The system is stable.

c) The stability requires further analysis as it depends on the specific value of Kc and the locations of the roots of the characteristic equation.

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Answer:

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state or phase change. Sensible heat is measured by the expression:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.

In this case:

Replacing:

Q= 4.184 \(\frac{J}{g*C}\) *60 g* (-48 C)

Q= -12,049.92 J

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

Answer:

A. The largest value is 7 and the smallest value is 1. Find the difference. 7 - 1 = 6.

Explanation:

The missing words for the given blanks are "volume" and "increase" respectively. This means that in a rigid container, if the pressure and/or temperature are changed, a gas will remain at constant volume, but the pressure it exerts will increase if its temperature is increased.

What is pressure?Pressure is the amount of force exerted per unit area of a surface. It is typically measured in units of force per square meter or in units of force per square inch. Pressure is measured in pascals (Pa), which are the SI unit of pressure.

Pressure is a crucial concept in physics because it governs the behavior of fluids and gases.What is temperature?Temperature is a measure of the degree of hotness or coldness of a substance. It is commonly measured in degrees Celsius (°C) or degrees Fahrenheit (°F). Temperature is a crucial concept in physics because it governs the thermal behavior of matter. In other words, it determines how heat is transferred between objects and how materials expand or contract with changes in temperature.

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Answer:

SAMPLE A - pure substance.

SAMPLE B - homogeneous mixture.

SAMPLE C - heterogeneous mixture.

Explanation:

Answer:

pure substance.

homogeneous mixture.

heterogeneous mixture.

Explanation:

True. The kinetic molecular theory states that a gas consists of molecules in constant fixed motion.

According to the kinetic molecular theory, a gas consists of molecules in constant random motion. The theory describes the behavior of gases based on the following postulates:

1. Gas particles (molecules or atoms) are in constant motion, moving in straight lines until they collide with other particles or the walls of the container.

2. The volume occupied by the gas particles is negligible compared to the volume of the container.

3. Gas particles do not exert attractive or repulsive forces on each other.

4. The average kinetic energy of gas particles is directly proportional to the temperature of the gas.

Based on these postulates, gas particles are in constant motion, but it is important to note that the motion is not fixed. The particles move randomly and in all directions, colliding with each other and with the walls of the container.

In conclusion, according to the kinetic molecular theory, a gas consists of molecules in constant random motion, rather than constant fixed motion. The theory describes the behavior of gases based on the random motion and collisions of gas particles.

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A typical volume leaving the large intestine might be 180 ml. If the volume exiting the large intestine were 396 ml, then it would most likely indicate a case of diarrhoea.

The large intestine is larger in diameter than the small intestine. It begins at the ileocecal junction, where the ileum enters the large intestine and ends at the anus.

Diarrhoea is a health/digestive problem that can be harmful if it is not correspondingly treated.

Diarrhoea may lead to an excessive loss of body fluids and it weakens the immunity system.

Both diarrhoea and vomiting can be associated with an excessive loss of body fluids.

In conclusion, a typical volume leaving the large intestine might be 180 ml. If the volume exiting the large intestine were 396 ml, then it would most likely indicate a case of diarrhoea.

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The temperature at which gas can not be condensed into a liquid is called the critical temperature. It is expressed in degrees Celsius (°C) or Kelvin (K). A gas that has a critical temperature above room temperature cannot be liquefied by pressure alone.

At this point, the gas would be referred to as a supercritical fluid.The critical temperature (Tc) is the temperature above which a substance cannot exist as a liquid, regardless of the pressure. It's an essential thermodynamic characteristic that varies depending on the substance. For carbon dioxide, for example, the critical temperature is approximately 31 °C or 304.2 K. At 31 °C, CO2 can exist only in a gaseous state. The gas would not turn into a liquid, even if the pressure was increased. This is due to the gas's critical temperature being less than its boiling temperature. For any gas, the critical temperature is the temperature above which it cannot be liquefied by applying pressure alone.The numerical value of the critical temperature is different for different substances. The critical temperature is approximately 31 °C or 304.2 K for carbon dioxide. The critical temperature of water is 373.99 °C or 647.15 K. Therefore, the numerical value of critical temperature changes depending on the substance.

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