Which of the following are molecules? (Select all that apply.)
1. MgF2
2. Br2
3. Na
4.C

Need this ASAP. Only ten points though, i'm new

The strongest ingredient of the two most commonly used chemical relaxers is Sodium hydroxide. This ingredient is often found in lye relaxers, which are known for being the most powerful type of relaxer on the market.

Sodium hydroxide has a high pH level and breaks down the protein bonds in the hair, which allows the hair to be reshaped and straightened. Bisulfate and potassium are also commonly used in relaxers, but they are not as strong as Sodium hydroxide. Bisulfate is often found in no-lye relaxers, which are less harsh on the hair and scalp, but also less effective at straightening hair. Potassium is another ingredient found in some relaxers, but it is not typically used as the main active ingredient.

Hydrogen dioxide is not typically found in relaxers at all, as it is a bleaching agent rather than a straightening agent. Overall, when it comes to choosing a relaxer, it is important to consider the strength of the active ingredient as well as the potential risks and benefits of each type of relaxer.

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Answer:

a bacterium with a rigid spiral structure,found in stagnant water and something causing disease

Answer:

number 3.

Explanation:

Answer:

3

Explanation:

V1 is 524cm³

297K is temperature and the problem asks to find the volume after it is cooled so V2 is unknown, not V1

Answer:

Particles has the highest kinetic energy when they are in the gaseous state. Kinetic energy is related to heat (also called thermal energy

Ion channels have a hydrated interior that spans the membrane and allows ions to diffuse through. These channels are integral membrane proteins that provide a selective pathway for ions to pass across the cell membrane. The hydrated interior of the channel ensures that ions remain solvated as they travel through, facilitating their movement.

Step-by-step explanation:
1. Ion channels are embedded within the cell membrane, providing a route for ions to cross.
2. The interior of these channels is hydrated, meaning that it contains water molecules, which help maintain the solvation shell around the ions.
3. This hydrated environment allows ions to diffuse, or spread, through the channel by following their concentration gradient, moving from an area of high concentration to an area of lower concentration.
4. The selective nature of ion channels ensures that only specific ions can pass through, contributing to the overall regulation of ions within the cell.

In summary, ion channels with a hydrated interior facilitate the diffusion of ions across the cell membrane, playing a crucial role in maintaining the proper balance and function of cells.

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Answer:

The correct option is a ball resting on the edge of a cliff.

Explanation:

A ball resting on the edge of a cliff is the correct option because it has the most potential energy and this is because potential energy is the energy stored by an object or energy posses by an object due it is position. It is the energy at rest.

A ball resting on the edge of a cliff indicate that the ball is a t rest, and it's possess energy base on its position relative to it's zero position.

Answer:A ball resting on the edge of a cliff.

Explanation:

Depending on the toxin, yes. Many things, including proteins, will surely be denatured or degraded and finally turn harmless if we adopt the colloquial definition of the word and include toxins and poisons.

For instance, ricin, botulinum, tetrodotoxin, etc. They are rather delicate, so I'm hoping this toxin has the lowest shelf life.

For a poison, "not up to quality" might indicate anything. It might be more harmful or less toxic. It might be more toxic than before, which would make it less effective against the intended target but extremely harmful to other species. It only indicates that a single chemical may have begun to breakdown, and the final result of that deterioration may be something entirely else.

Small organic molecules make up a lot of other toxins. These include nerve agents like nicotine, sarin, and VX, all of which are capable of being broken down through air oxidation, UV exposure, hydrolysis, and other processes. Numerous nerve agents have a shelf life of several years, and studies have been done to extend their use in weapons.

Lead, mercury, and cadmium are just a few examples of metals that are hazardous because they are toxic not only in their elemental forms but also as inorganic and organic compounds. Although the toxicity of the various forms can varies substantially (see, for example, methylmercury and elemental mercury), the majority of them are nevertheless at least harmful.

These can persist for a very long period since the reactions that can happen under usual circumstances might not be safe, such as a sizable piece of cinnabar left on a desk even throughout the course of a geological time scale. any substantial modification to ensure safety.

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re write the question.

Explanation:

it seems incomplete.

Answer:

33 moles

Explanation:

The given chemical reaction is 2C₄H₁₀(g) + 13 O₂(g) → 10H₂O(g) + 8CO₂(g)

The number of moles of each reactant are as follows;

Butane, C₄H₁₀ = 2 moles of (g) + 13 (g) → 10H₂O(g) + 8CO₂(g)

Oxygen gas, O₂ = 13 moles

Water, H₂O = 10 moles

Carbon dioxide, CO₂ = 8 moles

The total number of moles, n = (2 + 13 + 10 + 8) = 33

∴ The total number of moles involved in the reaction, n = 33 moles.

Answer:

Fluorine does not form an ion with a charge of 1+.

I HOPE IT WILL HELP YOU.

Thank you.

^ - ^

A decomposition reaction is a reaction in which the compound is broken up into its constituents.

A decomposition reaction is a reaction in which the compound is broken up into its constituents. When the decomposition is brought about by a catalyst, it is called catalytic decomposition.

Let us look at the catalytic decomposition of the compound potassium trioxochlorate V. in the presence of the catalysts manganese dioxide. The reaction occurs as follows;

2KClO3 -----> 2KCl + 3O2

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Answer:

nope its a myth don't worry :)

In order to identify the carbon atoms that most likely came from acetylene in the synthesis process, we need to understand a bit more about the properties of acetylene and its reactions.

Acetylene is a hydrocarbon with the chemical formula C2H2, meaning it is composed of two carbon atoms and two hydrogen atoms. When acetylene undergoes a reaction known as hydroboration-oxidation, it can be transformed into a variety of organic compounds, including alcohols and aldehydes.

In order to determine which carbon atoms in the starting material most likely came from acetylene, we would need to know more about the specific synthesis process being used. However, it's possible that the carbon atoms that came from acetylene would be the ones directly attached to the carbon-carbon triple bond in the molecule.

Without more information, it's difficult to say for sure which specific carbon atoms in the starting material came from acetylene. However, by understanding the properties and reactions of acetylene, we can make some educated guesses about which atoms might be involved in the synthesis process.

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Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

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Explanation:

plzz mark me brainliest

Answer:

Pupil, Cornea, Retina, and Lens

Explanation:

The correct statement is that A, B, and C all have different freezing points. This is because the freezing point of a substance depends on the number of solute particles per unit volume of solution. Since A, B, and C each contain different amounts of sucrose, ethanol, and sodium hydroxide, they each have different amounts of solute particles, and therefore different freezing points.

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Answer:

Radiation is energy. It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects.

Related information in Spanish (Información relacionada en español)

On this page:

Ionizing and non-ionizing radiation

Electromagnetic spectrum

Types of ionizing radiation

Periodic Table

Non-Ionizing and Ionizing Radiation

There are two kinds of radiation: non-ionizing radiation and ionizing radiation.

Non-ionizing radiation has enough energy to move atoms in a molecule around or cause them to vibrate, but not enough to remove electrons from atoms. Examples of this kind of radiation are radio waves, visible light and microwaves.

Ionizing radiation has so much energy it can knock electrons out of atoms, a process known as ionization. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. Ionizing radiation comes from x-ray machines, cosmic particles from outer space and radioactive elements. Radioactive elements emit ionizing radiation as their atoms undergo radioactive decay.

Radioactive decay is the emission of energy in the form of ionizing radiationHelpionizing radiationRadiation with so much energy it can knock electrons out of atoms. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes.. The ionizing radiation that is emitted can include alpha particles, beta particles and/or gamma raysHelpgamma raysA form of ionizing radiation that is made up of weightless packets of energy called photons. Gamma rays can pass completely through the human body; as they pass through, they can cause damage to tissue and DNA.. Radioactive decay occurs in unstable atoms called radionuclides.

Explanation:

Option A

Mark the line thermometer reading decreases.

Answer:

4.9 × 10²³ molecules

Explanation:

Given data:

Number of molecules = ?

Number of moles of oxygen = 0.815 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

0.815 mol  ×  6.022 × 10²³ molecules  / 1 mol

4.9 × 10²³ molecules

In the above intermediate chemical equation, oxygen will appear as follows: O₂(g) as a reactant (option B).

A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

According to this question, an intermediate chemical equation is presented as follows:

As observed in the above chemical equation, oxygen will react in its gaseous form i.e. as a reactant.

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Answer:

m=0.000107 kg

Explanation:

H=m*cp*change in temperature

0.296=m*4182*0.661

m=0.000107 kg

5. To solve question 5, we need to know the molecular formula of Uraninite, which is UO2.

So we need to know the molar mass of U and of O. We can look for it at the periodic table.

Molar mass of Uranium: 238.02891 g/mol

Molar mass of Oxygen: 15.999 g/mol

In the compound, we have 1 uranium and 2 oxygen.

So to calculate the percent of Uranium, we use a rule of 3:

270.03 ---- 100% (It is the molar mass of the compound)

238.0289 ---- x% (It is the molar mass of uranium)

270.09 * x = 238.0289 * 100

x = 23,802.89/270.09

x = 88.13%

So the percent of uranium in uraninite is 88.13%

Now for oxygen:

We have 2 atoms of oxygen in UO2, so we need to multiply its molar mass by 2: 15.999*2 = 31.998

Now we do the same rule of 3:

270.03 ---- 100% (It is the molar mass of the compound)

31.998 ---- x% (It is the molar mass of 2 atoms of oxygen)

x = 11.72%

The percent of oxygen in uraninite is 11.72%

Answer: As a second follow up to Question 3, uraranite is 88.13% uranium and 11.72% oxygen by mass.

Answer:

All of them

Explanation: A molecule can be all of them

Throwing isn't classified as a force so I'd say C but it is a force just not a type

Answer:

C- throwing

Explanation:

You physically have to throw it while the other forces act on their own.

Answer:

the correct answer is argon: 1s 2^2s 2^2p 6^3s 2^3p^6​

Explanation:

Before washing the substance on the filter, petroleum ether is poured into an ice water bath to assist stop the product from dissolving.

Re-crystallization procedures only work based on the solubility properties of the compound of interest. The re-crystallization experiment cannot be performed using a solvent if the compound of interest is not soluble in it. For example, if I chose petroleum ether as my solvent instead of water, my recrystallization experiment will not work because acetanilide is not at all soluble in petroleum ether. In order for my recrystallization experiment to be successful, I need an efficient solvent for acetanilide. Acetanilide should only be dissolved by this solvent at temperatures above room temperature. Additionally, my solvent for acetanilide should be soluble for the impurities species at all temperatures. Since petroleum ether does not meet these requirements, the experiment will not be successful with petroleum ether.

Petroleum ether may not react with the product on the filter, however, the majority of organic molecules are generally non-polar and soluble in petroleum ether. Temperature lowers solubility Petroleum ether is cooled in an ice water bath to stop the product from dissolving in the solvent.

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