Please help I need help fast please

Answer:

118MOLS

Explanation:

M1VI=M2V2

THE REST WORK OUT ( BA UNZA STUDENTS HE HE HE )

Answer:

Inside the Atom

Just like bricks are the building blocks of a home, atoms are the building blocks of matter. Matter is anything that has mass and takes up space (volume). All matter is made up of atoms. The atom has a nucleus, which contains particles of positive charge (protons) and particles of neutral charge (neutrons). Surrounding the nucleus of an atom are shells of electrons - small negatively charged particles. These shells are actually different energy levels and within the energy levels, the electrons orbit the nucleus of the atom.

Methanotrophs oxidize only methane completely, while methylotrophs can oxidize any compound containing a methyl group.

Methanotrophs and methylotrophs are two kinds of microorganisms that are equipped for oxidizing various sorts of mixtures.

Methylotrophs can oxidize any compound containing a methyl bunch, including methane. Interestingly, methanotrophs are a subset of methylotrophs that are explicitly adjusted to oxidize methane as their only wellspring of carbon and energy. Methanotrophs can totally oxidize methane to carbon dioxide, while methylotrophs can somewhat oxidize methane to carbon dioxide.

Methanotrophs can't oxidize different mixtures containing a methyl bunch, while methylotrophs can oxidize a more extensive scope of methyl-containing compounds. This is on the grounds that methylotrophs have a more different arrangement of chemicals that can oxidize different methyl-containing compounds. Methanotrophs, then again, have a particular arrangement of catalysts that are adjusted explicitly for the oxidation of methane.

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Reproduced, transferred their genes to progeny, died from natural causes, fell ill or contracted a disease, became prey for a predator or were devoured by a scavenger, or moved to a new area.

Non-living things include items like rocks, water, the atmosphere, the climate, and natural occurrences like earthquakes and rockfalls. One of the qualities that characterises living beings is their capacity for reproduction.

Its definition includes glass, the sun, water, sand, and rock as non-living objects. They show absolutely no signs of life. Some people define a non-living object as anything that once belonged to a live entity.

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Answer:

An ionic bond is that in which an electron is trasferred to another atom. Atoms  that are considered metals have a low electronegativity meaning they are less likely to gain any electrons. Atoms that are non-metals have a higher electronegativity and are more likey to gain electrons than lose electrons. When an electron is either lost or gained by another electron the atome becomes more stable. Atoms with a complete and balanced valence shell stay close together because of the Nucleus with its strong electromagnetic pull. The stronger the pull the more likely the atom will gain an electron. The weaker the pull the more likely it will lose an electron.

They are neutrally charged

They typically do not conduct electricity in solid state

A chemical compound known as an ionic compound in chemistry is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.

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Answer:

1. 5

2. 13

Explanation:

1. AB = 2 + 3 = 5

2 A2B2 = 2(2) + 3(3) = 4 + 9 = 13

Answer:

1. Cl

2. Br

3. Si

4. S

so, Si=[Ne]3s23p2

Explanation:

Answer: A. The oceans‘ tidal would be smaller because the moon would exert less gravitational pull on earths oceans.

Explanation:

i got it right :)

Answer:

by mixing red and yellow

Explanation:

Answer:

Either the sun or by mixing red and yellow together because they make orange.

Explanation:

Brainliest pls

To convert an aldehyde to a carboxylic acid, oxidation of the aldehyde functional group is required.

There are several reagents that can be used for this conversion:

1. Strong Oxidizing Agents:

  - Potassium permanganate (KMnO4): In the presence of acidic conditions, KMnO4 can oxidize aldehydes to carboxylic acids.

  - Chromic acid (H2CrO4): It is a strong oxidizing agent that can convert aldehydes to carboxylic acids.

2. Tollens' Reagent:

  Tollens' reagent, also known as silver mirror reagent, is a solution of silver nitrate (AgNO3) and ammonia (NH3) in water. It can oxidize aldehydes to carboxylic acids under mild conditions. It produces a silver mirror on the inner surface of the reaction vessel.

3. Jones Reagent:

  Jones reagent consists of a solution of chromium trioxide (CrO3) in diluted sulfuric acid (H2SO4). It is a strong oxidizing agent that can convert aldehydes to carboxylic acids.

These are some commonly used reagents to convert aldehydes to carboxylic acids through oxidation. The choice of reagent may depend on factors such as reaction conditions, desired selectivity, and other functional groups present in the molecule.

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The total amount of lime that must be added is most nearly 190 mg/l.

In lime - Soda process first of all. CO₂ is removed by addition of lime- Imol. C0₂ requires I mol of time.

The balanced chemical reaction is given as,

CO₂ + Ca(OH)₂ → CaCO₃ + H₂O

CO₂ present = 50mg/l as CaCO₃

I milli equivalent

Now the removal of Carbonate hardness occurs.

Ca(HCO₃)₂ + Ca(OH)₂ → 2 CaCO₃ + 2 H₂O

Add lime 120 mg/l as CaCO₃  For removal of Carbonate hardness of calcium.

The excess of lime - 20mg/l as CaCO₃

Total lime added = 50mg/l + 120mg/l + 20 mg/l

                            = 190 mg/l as CaCO₃.

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Answer:

3 Significant Figures.

Explanation:

The zeros to the left of non-zero numbers are Leading Zeros. These zeros are NOT significant. They serve as placeholders to locate the decimal point.

Answer:

3

Explanation:

To determine the number of significant figures in a number use the following 3 rules:

Non-zero digits are always significant

Any zeros between two significant digits are significant

A final zero or trailing zeros in the decimal portion ONLY are significant

Example:  .500 or .632000 the zeros are significant

                .006  or .000968 the zeros are NOT significant

Actually If you look very close to a plant you see this:

And to answer your question leaves are green due to sun nutrients water and im not sure  what else

Answer:

a

Explanation: cause

I don't see the answer choices but we know that high viscosity means thick substances like peanut butter, honey, and mollases.

Magma has high viscosity when it is cooling down and decreasing in temperature. I hope this helps. I don't really know how to explain it.

Magma is defined as the hot liquid and the semi-liquid rock which is located under earth's surface. The flow of magma onto the earth's surface is called the lava.

Almost all fluids have some resistance to movement and we call this resistance as the viscosity. This property of the fluid is mainly due to the relative motion among the layers of the fluid. The SI unit of viscosity is poiseiulle (PI).

The viscosity of liquids generally decreases rapidly with an increase in temperature. The viscosity does not change as the quantity of matter changes. Hence it is an intensive property.

The low temperature and high concentration of SiO₂ are the conditions at which magma have high viscosity. The magma at high temperature have only low viscosity and also at low concentration of SiO₂.

Thus the viscosity of magma mainly depends on the composition and temperature of magma.

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The precise volume of the starting solution, cobalt(II) chloride hexahydrate, that I used was 7.71 milliliters.

This is because the molarity of the solution was 1.25 M and I used 8.00 milliliters of the solution. To calculate the precise volume, I used the following equation:

Molarity = moles / volume

volume = moles / molarity

moles = volume * molarity

moles = 8.00 mL * 1.25 M

moles = 10.00 mmol

The molarity of a solution is the number of moles of solute per liter of solution. In this case, the molarity of the cobalt(II) chloride hexahydrate solution was 1.25 M. This means that there were 1.25 moles of cobalt(II) chloride hexahydrate per liter of solution.

I used 8.00 milliliters of the solution. To calculate the number of moles of cobalt(II) chloride hexahydrate that I used, I multiplied the volume of the solution (in liters) by the molarity of the solution. This gave me a value of 10.00 mmol of cobalt(II) chloride hexahydrate.

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One of the products of this reaction is solid tin(II) carbonate (SnCO₃).

When aqueous sodium carbonate (Na₂CO₃) reacts with aqueous tin(II) nitrate (Sn(NO₃)₂), a double-replacement reaction takes place. The balanced chemical equation for the reaction is,

Na₂CO₃(aq) + Sn(NO₃)₂(aq) → SnCO₃(s) + 2NaNO₃(aq)

In this reaction, the sodium ion and nitrate ion from the sodium carbonate and tin(II) ion and nitrate ion from the tin(II) nitrate switch places to form solid tin(II) carbonate and aqueous sodium nitrate.

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Answer:

Answer:

Explanation:

dilute hydrochloric acid is added to distilled water to increase the ionization of water.

It appears to be related to a volcanic activity alert system in a certain country. The statement mentions that a volcano is currently at level 4, which is the second-highest level on the country's volcano-alert system.

A volcano is a graphical representation of the relationship between the energy changes and reaction progress in a chemical reaction. It is commonly used to describe acid-base reactions, where the reactants and products have different acid-base properties.

The volcano plot is a graph with the reaction rate or activity of a catalyst on the y-axis and the reaction-free energy or potential on the x-axis. It is named after its shape, which resembles a volcano with a peak representing the maximum reaction rate or activity.

The position of a reactant or catalyst on the volcano plot determines its ability to promote the reaction. If it is to the left of the peak, the reaction is thermodynamically favorable but kinetically slow. If it is to the right of the peak, the reaction is kinetically favorable but thermodynamically less favorable.

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A chemical reaction is a process that results in the transformation of one set of chemicals into another set of chemicals. Classically, chemical reactions include all transitions involving only the positions of electrons in the formation and breaking of chemical bonds between atoms, and no changes are made. for the nucleus (no change in the elements involved), and can often be described by chemical equations

La respuesta correcta para esta pregunta abierta es la siguiente.

Desafortunadamente, no anexas opciones o incisos para contestar la pregunta.

Sin embargo, podemos comentar lo siguiente.

¿A qué se llama Recursos químicos en Química Industrial? ¿Cómo logran convertirse en bienes de consumo para la sociedad?

Hablando de Química Industrial, los recursos químicos son todos aquellos recursos que se utilizan para la extracción, procesamiento, y fabricación de los recursos naturales y materias primas para la elaboración de productos que posteriormente serán utilizados por otras industrias para ofrecerlas y venderlas como productos para el consumo masivo de las personas.

Este procesamiento de substancias para transformarlas en productos de consumo en general va encaminado a beneficiar a diferentes sectores como la medicina, los endulzantes, los fertilizantes, los saborizantes, los insecticidas, los plaguicidas, colorantes, y todo tipo de sustancia que pueda ser industrializada para su consumo final.

Answer:

17.1 Liters

Explanation:

It's a gas law question (more specifically a Charles's Law question). Formula is V1/T1 = V2/T2. You're given V1 and T1 and T2. However, in order to use the equation, temperature needs to be in Kelvins (by subtracting the degrees C from 273) for the numbers to work (among other reasons, the 0 degrees C will always give you an answer of zero or undefined). Placing all temps in kelvins makes the answers come out right. So 20L/273K = xL/233K gives you the answer when you cross-multiply.

Considering the Charles's law, a weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has  17.07 L at -40.0 °C, assuming pressure is held constant.

The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature and moles.

Charles's law is one of the gas laws. It relates the volume and the temperature of a certain quantity of ideal gas, kept at a constant pressure.

This law states that, at constant pressure, the volume of a gas is directly  proportional to its temperature. In other words, for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases, and as the temperature decreases, the volume of the gas decreases.

Mathematically, Charles's law says that the quotient that exists between the volume and the temperature will always have the same value:

\(\frac{V}{T}=k\)

Being an initial state 1 and a final state 2, it is true:

\(\frac{V1}{T1}=\frac{V2}{T2}\)

In this case, you know:

Replacing:

\(\frac{20 L}{273 K}=\frac{V2}{233 K}\)

Solving:

\(V2=233 K x\frac{20 L}{273 K}\)

V2=17.07 L

Finally, a weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has  17.07 L at -40.0 °C, assuming pressure is held constant.

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The effective nuclear charge is the net charge of the nucleus that is experienced by an electron in a multi-electron atom. The greater the effective nuclear charge, the more tightly bound electrons are to the nucleus.

The effective nuclear charge is determined by the total number of protons in the nucleus and the shielding effect of electrons present in the atom.The effective nuclear charge depends on two factors: the number of protons in the nucleus and the shielding effect of other electrons in the atom. The greater the number of protons in the nucleus, the greater the effective nuclear charge. The shielding effect of other electrons in the atom lowers the effective nuclear charge. An atom with more protons will experience a greater effective nuclear charge. The positive charge of the nucleus increases as the number of protons increases, and this positive charge attracts the negatively charged electrons towards it. Consequently, the effective nuclear charge, or the force of attraction that an electron experiences from the nucleus, increases. The shielding effect of other electrons in the atom will diminish the effective nuclear charge, but it will not change the fact that an atom with more protons will experience a greater effective nuclear charge.

In summary, the effective nuclear charge is dependent on the number of protons in the nucleus and the shielding effect of electrons present in the atom.

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N and 0 atoms have first ionization potentials of 14.6 and 13.6 eV, respectively.

Option A is correct.

Because of its electronic configuration, which is half-full, nitrogen has a greater ionization energy than oxygen. After losing an electron, oxygen adopts a half-full electronic configuration, resulting in a lower ionization energy than nitrogen.  Oxygen has a lower first ionization energy than nitrogen.

The first ionization energy fluctuates uniformly throughout the periodic table. Over time, the ionization energy increases from left to right and decreases from top to bottom in groups. Accordingly, helium has the biggest first ionization energy, while francium has quite possibly of the most minimal.

Incomplete question :

The first ionization potential in electron volts of nitrogen and oxygen atoms respectively are given by

A. 14.6, 13.6

B. 13.6, 14.6

C. 13.6, 13.6

D . 14.6, 14.6

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Answer: A certain element exists as three different isotopes. 24.1% of all the isotopes have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu. What is the average atomic mass of this element?

Explanation: A certain element exists as three different isotopes. 24.1% of all the isotopes have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu. What is the average atomic mass of this element? 74.92 amu. Use your periodic table to determine which element this is. As. An element exists

The average atomic mass of the element is 74.93 amu

Let the 1st isotope be A

Let the 2nd isotope be B

Let the 3rd isotope be C

From the question given above, the following data were obtained:

Abundance of A (A%) = 24.1%

Mass of A = 75.23 amu

Abundance of B (B%) = 48.7%

Mass of B = 74.61 amu

Abundance of C (C%) = 27.2%

Mass of C = 75.23 amu

The average atomic mass of the element can be obtained as follow:

= [(75.23 × 24.1)/100] + [(74.61 × 48.7)/100] + [(75.23 × 27.2)/100]

= 18.13043 + 36.33507 + 20.46256

Thus, the average atomic mass of the element is 74.93 amu

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After valves are opened and enough time has passed for net movement of particles between containers to stop, pressure of gas in middle container will be closest to 3 atmospheres as pressure will be halved after opening valves.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

Pressure will be halved after opening valves as it will be bifurcated ,thus, 9/2=4.5 which is closest 3 atmospheres.

Thus,the pressure of gas in the middle container will be closest to 3 atmospheres.

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