PLEASE HELPPPPPP 100 POINTS!!!!!!!

Air is a homogeneous mixture, water is a compound, diamond is an element, and soil is heterogeneous.

(a) Air is a homogeneous mixture of gases, primarily nitrogen (78%), oxygen (21%), and trace amounts of other gases such as argon, carbon dioxide, and neon.

Air is a mixture of several different elements and compounds and the composition of air can vary depending on location and altitude.

(b) Water is a compound consisting of two hydrogen atoms and one oxygen atom, chemically represented as H2O. It is a clear, odorless, and tasteless liquid that is essential for all forms of life on Earth.

Water is a pure substance and not a mixture of any other compounds or elements.

(c) Diamond is an element made up entirely of carbon atoms. It is a naturally occurring mineral and is one of the hardest and most durable substances known.

It is a pure substance and not a mixture of any other compounds or elements.

(d) Soil is a heterogeneous mixture of organic and inorganic materials such as minerals, rocks, organic matter, water, and air.

Soil is composed of a variety of different compounds and elements and it can vary greatly in composition depending on the location and the environment.

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Answer:Venus and mars

Explanation:

Venus and Mars are the most like Earth, but in different ways. In terms of size, average density, mass, and surface gravity, Venus is very similar to Earth. But Mars is the planet that is most similar to Earth in other ways.

Only one planet in our solar system is particularly eccentric: Mercury with an eccentricity of 0.21. The dwarf planet Pluto also has an eccentricity of 0.25.

Answer:

A: 19

Explanation:

It takes trial and error to balance a chemical equation, but after fidgeting with it for a while the lowest, whole-number coefficients are as follows:

4NH3(g)+5O2(g)⇒4NO(g)+6H2O(g)

We can check this by simply counting the number of molecules on either side of the equation, and adjusting as needed. It's important to remember that we can only ever change the coefficients to balance, never the subscripts.

Once counting the coefficients, we reach a sum of 19.

4+5+4+6=19

The correct procedure is number 1. Dissolve 60g of K3PO4 in 3.0l of water.

Dissolve is a term used in film and photography to refer to the gradual transition from one image to another. It is used to create a smooth, gradual transition from one scene to the next, and can be used to create a sense of continuity and flow in a story. Dissolves are often used to transition between scenes or time periods, and can be used to create different emotional effects depending on the type of dissolve used. Dissolves can be used to create a feeling of anticipation or suspense, or to create a sense of calmness or relaxation. They can also be used to illustrate the passage of time, or to show the transition between two different points of view.

Dissolve 60g of K3PO4 in 3.0l of water, Measure out 600ml of water and add 30g of K3PO4, Measure out 30g of K3PO4 and add 3.0l of water.

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2)Use a spill to absorb the liquid with non toxic vapors

3)contaminated clothing must be removed and treated as hazardous waste

9)If splashed with a large amounts of chemicals use the shower immediately

These three are the appropriate actions to take in the event of spill,clean up the spill and clean up any damage and treat is important action to take in even of spill

Provide assistance for safety showers and doing eye washes to control the contamination to other areas .

After spillover emergency medical assistance is needed after proper decontamination process.

eyewashes should be used only for 3 minutes so another option is not suitable .

Whenever there is contaminated clothing you should remove the cloth without cleaning and washing so another option is incorrect for the given question.

What is a chemical?

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When we talk about intermolecular forces, we generally refer to three types. The weakest forces are those of dispersion. The second is a stronger and more dominant force. If it is present.

That occurs only when we have polar molecules, dispersion forces being identified with all molecules, including non-polar molecules and polar molecules, and then having rather strong dipoledipale forces. It has a distinct name because it is an intermolecular force that arises when a polar molecule has a hydrogen that is directly coupled to a nitrogen, oxygen, or florine. The intermolecular force in this scenario is so intense that we name it hydrogen. If we bind for the first molecule, To draw its Lewis structure, we can see that a hydrogen is connected to a carbon.

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Calcium carbonate (CaCO3). The process of forming a solid from a gas involves the release of energy in the form of heat, as the ions form strong electrostatic bonds with one another.

What is the energy ?

Energy is the capacity to carry out tasks or affect change. It can be found in many forms, such as heat, light, chemical energy, electrical energy, mechanical energy, gravitational energy, sound energy, and nuclear energy. Energy is used to power our homes, run our transportation systems, and fuel industry. It is essential for our everyday lives, and is necessary for the functioning of all living organisms. Energy is also a key factor in the Earth's climate, as it affects the temperature, precipitation, and other weather patterns. In order to ensure sustainable energy use and protect the environment, it is important to use energy wisely and to invest in renewable sources.

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The oxidation of each element in the following chemical reaction and identify which are oxidized and reduced,Hydrogen: Reduced from +1 to 0.

What is the oxidized ?

Oxidation is a chemical reaction that involves the transfer of electrons from one molecule or atom to another. In other words, it is a process in which an element or compound loses one or more electrons. Oxidation occurs when an atom or molecule gains oxygen or loses a hydrogen atom. Oxidation can also occur when a substance is exposed to light, heat, or other forms of energy. Oxidation can lead to the production of free radicals, which can cause cell and tissue damage, resulting in various diseases, such as cancer and heart disease.

Oxidation:

Sulfur: Oxidized from 0 to +4

Oxygen: Oxidized from -2 to 0

Reduction:

Hydrogen: Reduced from +1 to 0

Explanation: In this reaction, sulfur is oxidized from 0 to +4 as it gains 4 electrons. Oxygen is oxidized from -2 to 0 as it gains 2 electrons. Hydrogen is reduced from +1 to 0 as it loses 1 electron.

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last option is correct, (384.7 g/mol) * (1 mol/6.023*10^23). The smallest unit of a material, a molecule possesses both its physical and chemical characteristics. One or more atoms make up molecules.

Moles = Molecules/6.022*10^23

Mass = Moles * molar mass  

Mass = Molecules * molar mass / 6.023*10^23

Mass = (Molecules/6.023*10^23) * (384.7 g/mol)

Thus last option is correct.

(384.7 g/mol) * (1 mol/6.023*10^23)

Compound molecules include atoms from two or more distinct elements. As an illustration, the molecule of water (H2O) has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. Common greenhouse gas methane (CH4) has five atoms: one carbon (C) and four hydrogen atoms (H, see Fig. 2.9). There are three different kinds of molecules: atom-sized molecules, element-sized molecules, and compound-sized molecules.

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The amount of the potassium superoxide that reacted in the equation is  15.9 moles.

We have to note that the amount of the potassium super oxide that was reacted in this case can be obtained from the stoichiometry of the reaction.  Looking at the stoichiometry of the reaction, we can now be able to understand that;

Number of moles of oxygen produced = 380 g/ 32 g/mol

= 11.9 moles

4 moles of the potassium super oxide produced 3  moles of oxygen

x moles of potassium super oxide produced 11.9 moles of oxygen

x = 4 * 11.9/3

= 15.9 moles

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Because F contains entirely filled shells, a large amount of energy is required to extract the electron from the outermost shell. As a result, it possesses a high ionization energy.

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Because F contains entirely filled shells, a large amount of energy is required to extract the electron from the outermost shell. As a result, it possesses a high ionization energy.

What is quantum number?

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