1100.0 g of Fe contains how many moles?

Answer:

Wavelength = \(4.48*10^{-5}m\)

Explanation:

Given the following data;

Speed of light, V = 3 * 10^{8}m/s

Frequency, F = 6.700 * 10^{12}Hz.

To find the wavelength

We know that that the speed of light is given by the formula;

\( Speed of light, V = wavelength * frequency \)

Making wavelength the subject of formula, we have;

\( Wavelength = \frac {speed \; of \; light}{frequency} \)

Substituting into the equation, we have;

\( Wavelength = \frac {3 *10^{8}}{6.700 ✕ 10^{12}} \)

Simplifying the equation, we have;

Wavelength = 4.48*10^{-5} m

Therefore, the wavelength of the electromagnetic radiation is \(4.48*10^{-5} meters\)

Answer:

B. ice and glaciers

Explanation:

The majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers.

The option containing Pollen, oxygen, carbon dioxide is the correct answer as it contains all the natural components, rest contains one or more synthetic or man made component.

Male gametes or the sperm cells are transported between the different plant reproductive sections by pollen which is a fascinating natural substance that is essential to plant reproduction.

The water is the primary component of all lifeforms, oxygen makes up the majority of the mass of all living things.

There are the numerous natural sources of atmospheric carbon dioxide, including outgassing from the ocean, decomposing vegetation and other biomass, venting volcanoes, naturally occurring wildfires, and even belches from ruminant animals. Photosynthesis is the process by which oxygen is continuously replenished in the Earth's atmosphere.

Pollen, oxygen and carbon dioxide all are natural component since they are form naturally in the environment.

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Your question is incomplete , for full question please refer below:

Which of the following is only list representing natural components of the atmosphere?

Okay, let's solve this step-by-step without using quadratics:

1) The equilibrium constant Kc = 0.36 means the equilibrium lies to the left. So there will be more N2O4 than NO2 at equilibrium.

2) The initial concentration of N2O4 is 0.1 mol dm^-3. Let's call this [N2O4]initial.

3) At equilibrium, the concentrations of N2O4 and NO2 will be [N2O4]equil and [NO2]equil respectively.

4) We know the equilibrium constant expression for this reaction is:

Kc = ([NO2]equil)^2 / [N2O4]equil

5) Setting this equal to 0.36 and plugging in 0.1 for [N2O4]initial, we get:

0.36 = ([NO2]equil)^2 / (0.1 - [NO2]equil)

6) Simplifying, we get:

0.036 = [NO2]equil^2

7) Taking the square root of both sides, we get:

[NO2]equil = 0.06 mol dm^-3

So the equilibrium concentration of NO2 is 0.06 mol dm^-3.

Let me know if you have any other questions! I can also provide a more step-by-step explanation if needed.

Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 18.015 g

volume = 15 cm³

We have

\(density = \frac{18.015}{15} \\ = 1.000833333...\)

We have the final answer as

Hope this helps you

Answer: 2 AgNO3(aq) + NiCl2(aq) ⇒ 2 AgCl(s) + Ni(NO3)2 (aq)

Explanation:

Answer:

Law

Explanation:

A law is a summary of observed (measurable) behavior, whereas a theory is an explanation of behavior. A law tells what happens; a theory (model) is our attempt to explain why it happens.

Answer: yes

Explanation:

bilayer of lipids, oily substances found in all cells

Moles Fe₂O₃ produced : 1.16 moles

Given

2.32 moles of iron

Required

moles of Fe2O3

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants and products)

Reaction

4 Fe + 3 O₂ ⇒  2 Fe₂O₃

From the equation, mol ratio Fe : mol Fe₂O₃ = 4 : 2, so mol Fe₂O₃ :

= 2/4 x mol Fe

= 2/4 x 2.32

= 1.16 moles

The answer for that is D

The word 'formula unit' and the number of 'moles' do not denote the same thing in a chemical reaction.

The term 'formula unit' refers to the smallest whole number ratio of ions in an ionic compound, whereas 'moles' refers to the amount of substance present in a given sample. The number of moles is calculated using Avogadro's number, which represents the number of particles in one mole of a substance.

In contrast, the formula unit does not depend on the amount of substance present but rather on the chemical formula of the compound. For example, one mole of NaCl contains 6.022 x 10^23 formula units of NaCl, but one mole of H₂O contains 6.022 x 10^23 molecules of water. Therefore, while both terms are important in chemical reactions, they refer to different aspects of the compounds involved.

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Answer:

TechnologyCommand Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI.

Explanation:

Answer:

Technology Command Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI. We do this with a multi-faceted approach using cutting edge technologies. We also market your content through various channels such as telemarketing and e-mail campaigns, as well as syndication. We further engage your customers through blogs, webinars and webcasts. We closely study your customers’ requirements and arrange meetings when the time is right. This ground work frees up your sales force to focus on its strength: hard core sales. We cleanse your existing database and remove irrelevant data. We enrich it with new, more relevant contact information. We monitor your existing and potential customer profiles and track their technology needs. The moment we sense purchase behavior, you get an instant update.

Answer:

hahahaha

Explanation:

hahahahahhahahaha soooo funny

Answer:

A- observation

B- hypothesis

C,D,E- experiment

F- conclusion

Explanation:

Lucia has just carried out the scientific process. An observation refers to paying close attention to a particular phenomenon in nature. This leads to the proposition of an intelligent guess about the observed phenomenon. This intelligent guess is called a hypothesis.

The hypothesis now guides the design of an experiment designed to confirm or disprove the hypothesis. The results of the experiment now leads to the formulation of a conclusion as Lucia has just done.

The property of water that allows it to act as a transport medium will be water is a solvent. Option D is correct.

Water will be often referred to as the "universal solvent" because it has the ability to dissolve a wide range variety of substances. This property is due to the polar nature of the water molecules. Water molecules have a slight positive charge on the hydrogen atoms and a slight negative charge on the oxygen atom, creating a polar molecule.

When substances dissolve in water, the polar water molecules surround the solute particles, breaking the ionic or molecular bonds that hold the solute together. This allows the solute to be transported and dispersed throughout the water, making water an effective medium for transporting dissolved substances.

Adhesion refers to the ability of water to stick to other surfaces, while the high heat of evaporation and high heat capacity refer to water's ability to absorb and retain heat. The property mentioned in option, the frozen form of water being less dense than the liquid form (known as the expansion of water upon freezing), is related to its unique crystal lattice structure and not directly related to acting as a transport medium.

Hence, D. is the correct option.

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Any capacity for doing work is called energy. It is a quantity and can be of various forms. Energy is getting transferred from arm muscles to the ball.

Energy is the work done by the object to perform any given task and is dependent on the factors like the distance and the force applied.

When Abin lifts the bowling ball then the object is displaced from its original position and some amount of force is applied by the arm muscles.

The chemical energy stored in the arm of Abin is a form of energy and gets transferred to the ball from the muscles so it can be lifted.

Therefore, option B. energy is transferred from the arms muscles to the ball.

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Answer:

B. It is being transferred from his arm muscles to the ball.

Explanation:

got it right.

Answer:

A: 33S

Explanation:

An atom has 16 protons & 17 neutrons. What is the chemical symbol for the atom? Consult the periodic table.

Answer:

the answer is A

Explanation:

i just took quiz and got 100%

The deviation of the concentration of the unknown sample, back-calculated from the diluted sample closest to the center of your calibration curve (absorbance of 0.5), is 5 units.

To calculate the deviation of the concentration of the unknown sample, you need to back-calculate from the diluted sample whose concentration falls closest to the center of your calibration curve. In this case, the center of the curve is at an absorbance value of 0.5.
Let's assume that the unknown sample is diluted by 50%. This means that the concentration of the diluted sample is half of the concentration of the unknown sample.

To calculate the deviation at this point, you need to compare the concentration of the unknown sample with the concentration of the diluted sample. Subtract the concentration of the diluted sample from the concentration of the unknown sample to find the deviation.
For example, let's say the concentration of the unknown sample is 10 units. Since it is diluted by 50%, the concentration of the diluted sample would be 5 units.
To find the deviation, subtract the concentration of the diluted sample (5 units) from the concentration of the unknown sample (10 units). In this case, the deviation would be 10 units - 5 units = 5 units.

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The most common elemental form of nitrogen is N2 (option 1).

Nitrogen is a chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.

As earlier said, nitrogen is a gaseous element at room temperature. This means that it naturally exists as a gas in the atmosphere.

The chemical formula of elemental nitrogen is N, however, it exists as atmospheric nitrogen with the chemical formula of N2.

N2 denotes that two atoms of nitrogen have chemically combined to form a nitrogen molecule.

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After an action potential reaches the presynaptic terminal, the next event in the sequence of events in neurotransmission is the release of neurotransmitters into the synaptic cleft.

The presynaptic terminal is the end of the axon of a neuron that is responsible for transmitting signals to other neurons or muscles. When an action potential reaches the presynaptic terminal, it triggers the opening of voltage-gated calcium channels in the membrane of the terminal.

The influx of calcium ions causes the synaptic vesicles, which contain neurotransmitters, to fuse with the presynaptic membrane and release their contents into the synaptic cleft.

Neurotransmitters are chemicals that transmit signals across the synapse, which is the small gap between the presynaptic terminal and the postsynaptic neuron or muscle.

The neurotransmitters diffuse across the synaptic cleft and bind to receptors on the postsynaptic neuron or muscle, triggering a response. This response can be excitatory or inhibitory, depending on the type of neurotransmitter and the type of receptor it binds to.

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The two conditions that can cause water or liquids to backflow into a water system are back siphonage and back pressure. Option (d) is the correct answer.

Back siphonage occurs when there is a sudden decrease in water pressure in the water supply system, causing the water to flow in the opposite direction, leading to backflow. This can happen when there is a break in the main water supply line, or when there is a sudden high demand for water, such as during firefighting activities. Backpressure, on the other hand, occurs when the pressure in the downstream water system is higher than the pressure in the upstream water system.

This can happen when a pump is connected directly to a potable water system without proper backflow prevention devices or when a boiler or other heating device is connected to a water system without proper safety valves. Both of these conditions can result in contaminated or unsafe water entering the potable water supply, leading to health hazards and water quality issues. It is important to have proper backflow prevention devices installed and regularly maintained to prevent such occurrences.

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Ocean and wind currents are both caused by

So,option A is correct one.

The air that moves in a river like a flow in a particular direction is called wind current.

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Answer:

so u can put on hot sauce to spice it up

and give it to ur teacher

It's fruitfull to add some more information and some acquired knowledge...

Hope it is helpful !

Answer: they help stop bacteria and diseases

Explanation:

Answer:

thier job is to fight diseaeses, they make up the immune system of the body

Explanation:

Answer:

The answer is 4778.4 cm (cubed)

Explanation:

V = (πr(squared)) x (h/3)

V = (π x 13(squared)) x (27/3)

V = 530.9291585 x 9

V = 4778.4

Answer:

y  = 13x + 4

Explanation:

Given parameters:

number of computer games bought  = x

cost of each games  = $13

number of a magazine  = 1

cost of magazine  = $4

Unknown:

Total amount of money spent = ?

Solution:

The total amount spent;

  let total amount  = y

 y  = total cost of magazine + total cost of computer games

 total cost of magazine  =$4

 total cost of computer games  = 13x

y  = 13x + 4