Neptune is one of the outer planets in our solar system. Which BEST explains why Neptune revolves in its orbit instead of moving out into space?

A. Gravity pulls Neptune towards the sun.
B. Neptune's orbit is limited in its orbit becasue its so close to Jupiter.
C. Neptune's electromagnetic energy keeps it in orbit around the sun.
D. Other planets have the same mass as Neptune.

Answer: right here

Explanation:

A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.

The two atoms that are isotopes of the same element in this case are Atom 2 and Atom 3. Atom 1, with seven protons, is not an isotope of the same element as Atom 2 and Atom 3 because its atomic number is different.

The term "isotope" refers to atoms of the same element that have a different number of neutrons. In this case, we have three atoms: Atom 1 with seven protons and eight neutrons, Atom 2 with eight protons and seven neutrons, and Atom 3 with eight protons and eight neutrons. To determine which two atoms are isotopes of the same element, we need to compare their atomic numbers.

The atomic number of an element represents the number of protons in the nucleus of its atoms. In this case, Atom 1 has seven protons, Atom 2 has eight protons, and Atom 3 also has eight protons. Since the atomic numbers of Atom 2 and Atom 3 are the same, they are isotopes of the same element.

Isotopes of the same element have the same number of protons, which defines the element itself, but they differ in the number of neutrons. In this case, Atom 2 and Atom 3 both have eight protons, indicating that they are both isotopes of the same element.

To summarize, isotopes are atoms of the same element that have different numbers of neutrons. In this scenario, Atom 2 and Atom 3 are isotopes of the same element because they have the same number of protons (eight) and differ only in the number of neutrons. Atom 1 is not an isotope of the same element as Atom 2 and Atom 3 because its atomic number is different.

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Explanation:

s f colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.

HOPE THSI HELPS HAVE A NICE DAY!

Answer:

Colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.

The binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond.  Option b

Aminoacyl-tRNA is a complex molecule that plays a crucial role in protein synthesis. It consists of a tRNA molecule covalently linked to an amino acid. The amino acid is attached to the 3' end of the tRNA molecule through an ester bond.

An ester bond is formed between the carboxyl group (-COOH) of the amino acid and the hydroxyl group (-OH) of the ribose sugar at the 3' end of the tRNA molecule. This ester bond is also referred to as an ester linkage. The formation of the ester bond is catalyzed by the enzyme aminoacyl-tRNA synthetase.

The ester bond in aminoacyl-tRNA is essential for protein synthesis. During translation, the aminoacyl-tRNA molecule carries the specific amino acid to the ribosome, where it is incorporated into the growing polypeptide chain. The ester bond is later hydrolyzed, releasing the amino acid for further use in protein synthesis.

In summary, the binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond between the carboxyl group of the amino acid and the hydroxyl group of the ribose sugar in the tRNA molecule.

Option b

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Answer:

92

98

35

35

Explanation:

The same amount of energy will not cause different substances to have identical temperature increases because each substance has a unique heat capacity. Heat capacity is the amount of energy required to raise the temperature of a given amount of a substance by 1 degree Celsius.

Different substances have different heat capacities due to differences in their molecular structures, so the amount of energy needed to raise the temperature of one substance may be more or less than the amount needed to raise the temperature of another substance by the same amount.

Similarly, the same amount of energy will not be needed to cause identical temperature increases in different amounts of the same substance because heat capacity is directly proportional to mass, meaning that larger amounts of the same substance will require more energy to raise the temperature by the same amount.

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Answer:

Nervous system

Explanation:

We like to think of the nucleus as the "control center of the cell." The nucleus controls the cell's DNA, protein synthesis, cell division, storage of genetic material, and protein transcription. Basically, it acts as the cell's brain by telling it what to do, how to grow, and when to reproduce. This is similar to our brain, part of the nervous system.

Note that the point at which oxygen changes from liquid to gas is 90k. See the attached graph.

To plot the data, we can use a line graph with temperature (T) on the x-axis and density (d) on the y-axis. Here is a plot of the data:

From the plot, we can see that the density of oxygen decreases as the temperature increases. At around 90 K, there is a significant drop in density, indicating a change in state from liquid to gas. We can circle this temperature as the point at which oxygen changes from liquid to gas.

Therefore, we can circle the temperature 90 K as the point at which oxygen changes from liquid to gas.

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Answer:

It's would be Jöns Jacob Berzelius

Answer:

Antoine Laurent Lavoisier is consider as the Father of Chemistry. He was a meticulous experimenter, he revolutionized chemistry.

The mole fraction of oxygen gas is 0.290

First we will calculate the total pressure by adding the partial pressure of all gases as follows:

Partial pressure of CH₄= 143 mmHg

Partial pressure of N₂= 469mmHg

Partial pressure of O= 251mmHg

Total pressure = partial pressure of CH₄+ partial pressure of N₂+ partial          pressure of O₂

Total pressure= 143+ 469+ 251

                        =863mmHg

Finally we will calculate the mole fraction of O₂ with the help of formula written below:

Mole fraction=\(\frac{partial pressure }{total pressure}\)

Mole fraction of O₂=\(\frac{251}{863}\)

Mole fraction of O₂= 0.290

Therefor answer will be 0.290

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Answer: There should be 3.

Explanation:

Answer:

Nonmetals tend to gain electrons and metals tend to lose electrons.

Explanation:

Answer:

I don't really get your question but I think my answer relates to your question :)

Explanation:

Due to the high availability of sunlight, sea grass can get the sufficient light energy to carry photosynthesis and storage of energy.

Photosynthesis is a biochemical process by which green plants synthesis energy and in the leaves by the aid of light energy. Here, the light energy is converted to chemical energy.

Plants need sunlight for the light reaction of photosynthesis. In the absence of sunlight, they cant synthesis energy and the chlorophyll does not get active. They will grow towards sunlight.

The sea grass are getting sufficient light energy for the synthesis of energy. The energy storage molecules ie. ATP in sea grass will be synthesized in higher rate with the presence of sun shining.

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Hydroxychloroquine cannot be made from grapefruit and lemon rinds.

Hydroxychloroquine is not a natural compound, rather it can only be synthesized from quinoline molecule in the laboratories.

During the synthesis of hydroxychloroquine, several sequential chemical reactions and purifications are done.

Hydroxychloroquine is used in the treatment of:

But when grapefruit and lemon rinds are boiled in water, a natural chemical compound known as limonene is obtained.

Therefore, hydroxychloroquine cannot be made from grapefruit and lemon rinds,

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The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).

The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.

There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.

More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.

Thus, the correct option is E.

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Answer:

Yes as you can improve The invisible to human eye force or physical force if any being applied to a object of any mass and with all individual forces as they are acting on this object

Explanation:

The change in enthalpy is -1380 kJ. The amount of heat released or absorbed during a reaction that takes place under constant pressure is referred to as the enthalpy change.

The difference in enthalpy between the reactants and products is measured by the change in enthalpy of a reaction. The energies required to build new chemical bonds and break existing ones are what determine a system's enthalpy. The enthalpy change that occurs during a reaction is the heat that enters or exits the system. An important aspect that affects whether a reaction may occur is whether the enthalpy of the system increases (i.e., because energy is added) or lowers (i.e., because energy is given off). Enthalpy is a state function, therefore the amount of enthalpy that changes throughout a reaction depends only on two factors: the masses of the substances that are reacting and the physical states of the reactants and products. It is independent of how reactants are transformed into products.

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What is the change in enthalpy in kJ when 2.30 mol of Mg is completley reacted according to the following reaction

2Mg(s) + O2(g) > 2MgO(s)

Delta H = -1204 kJ

The existence of a dissolved metal complex is indicated by the supernatant's yellow color. These findings lead us to the conclusion that the group B unknown includes a metal hydroxide precipitate, most likely an aluminum-complexed metal hydroxide.

We may conclude the following based on the facts given:

(1)The group B hydroxide precipitate is added with NaOH and H₂O₂, and the result is a precipitation and a yellow supernatant:

The precipitate that resulted points to group B having a metal hydroxide.

The existence of a dissolved metal complex is indicated by the supernatant's yellow color.

(2)A clear, crimson solution is produced by adding 6 M HCl to the four drops of supernatant until the solution is acidic, adding aluminium (Al), and then adding 6 M NH₃ until the solution is basic.

The presence of a compound between aluminium and a ligand from the supernatant is indicated by the red color of the solution.

The effective creation of a stable compound is shown by the clear solution.

These findings lead us to the conclusion that the group B unknown includes a metal hydroxide precipitate, most likely an aluminum-complexed metal hydroxide. Additional tests and data would be needed for the specific metal in group B's further study and identification.

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Answer:

The reaction that occurs is a redox reaction. The Copper metal (Cu 0)on the copper pennies is oxidized in concentrated nitric acid to produce Cu2+ ions. Copper is easily oxidized to Cu2+, which is blue in aqueous solutions (water) so you should see the solution turn blue as the copper penny reacts.

Have a nice day ;)(^-^)

Taking into account the definition of chemical and physical change, the reaction of the copper penny with nitric acid is a chemical change.

Physical changes are those in which the substances involved are the same before and after the change. That is, a physical change is a transformation in which the nature of matter does not change.

Chemical changes are considered to be those in which the substances involved are transformed into totally different ones.

In this way, the initial substances do not exist after the phenomenon has occurred and instead, new substances are formed, different from the initial ones.

That is, a chemical change is a transformation in which the nature of matter varies.

When a penny of copper reacts with nitric acid, a redox reaction occurs where the copper metal in the copper pennies is oxidized to produce Cu²⁺ ions, whereas because the nitric acid oxidizes the copper, the nitric acid itself is reduced to nitric oxide (NO). Nitric oxide then reacts with oxygen in the air to produce nitrogen dioxide (NO₂). This can be represented by:

Cu + 4 HNO₃ → Cu²⁺(ac) + 2 NO₃⁻  + 2 NO₂ + 2 H₂O

Finally,  the reaction of the copper penny with nitric acid is a chemical change because a redox reaction occurs.

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Answer: by your body

Explanation

The conductivity of metalloids can be compared to the conductivity of metals and nonmetals because metalloids conduct electricity better than nonmetals, but not as well as metals (Option C).

The expression metalloids is a term used to denote chemical elements that have features resembling metals such as an acceptable electrical conductivity, but they are not metals (e.g. boron, germanium, antimony, arsenic, polonium, etc).

Therefore, with this data, we can see that metalloids are similar to metals in electrical conductivity but they are not metals because they do not fit all properties of metals.

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The four main components of a modern detergent are builders (50% by weight), surfactants (15%), bleach (7%), and enzymes (2%).

A detergent can be described as a surfactant or a mixture of surfactants with cleansing properties in dilute solutions. These substances are similar to soap but are more soluble in hard water due to the polar sulfonate is less likely than the polar carboxylate of soap to bind ions in hard water.

Builders are water softeners and their anions react with cations to form insoluble compounds which precipitate onto fabrics and washing machines and which are hard to remove.

Surfactants provide absorption and emulsification of soil into the water and also by reducing the surface tension of water to improve wetting.  The main function of bleaches is oxidizable organic stains, which are usually of vegetable origin.

Enzymes are needed to degrade stubborn stains composed of proteins, fats, starch, and cellulose.

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Answer:

D

Explanation:

Reactants are on the left but they are not numbers.

The equation is the entire reaction including what is on the left and right.

The products are found on the right side.

So it has to be coefficient since these are the numbers found in front of the reactants on the left side.

Answer:

Explanation:

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

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

From the question we have

\(density = \frac{0.256}{100} \\ \)

We have the final answer as

Hope this helps you

Answer:

4. A concentration of a trace mineral was found to be 2.53 ppb in an aqueous solution. A. What mass of solution contains 2.53 g of the mineral? (1 point - Knowledge, 2 points - Inquiry, 1 point - Communication) m=? C = 2.53 ppm or 2.53X106 n = Con ܗ B. What volume of solution contains 2.53 g of the mineral? (1 point - Knowledge, 2 points - Inquiry, 1 point - Communication) VE? C: 2,53 ppm ns Cen

Percentage by mass of water in CuSO4.5H20 is 36.07% .

In this problem we have - copper(II) sulfate pentahydrate and it's molecular formula is (CuSO₄.5H₂O) .

There are 5 molecules of water are present.

Now we calculate it's molar mass-

We know that-

molar mass of Cu = 63.5u

Molar mass of SO₄ = 96 u

Molar mass of H₂O = 18 u

Now, molar mass of (CuSO₄.5H₂O) = 63.5 + 96 + 5 × 18

Now, molar mass of (CuSO₄.5H₂O) = 249.5u

And mass of water in CuSO₄.5H₂O = 90 u

now mass percentage of water = mass of water ÷ Total mass ×100

now mass percentage of water = 90 ÷ 249.5 × 100

now mass percentage of water =  36.07 %

So we find out mass percent by dividing given mass with total mass and then multiplying it with hundred and it came out to be 36.07 % .

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Answer:

36.1

Explanation:

Answer:

what is matter with example

Rhizobium bacteria were soil microbes that have the ability to convert dissolved nitrogen from the atmosphere. These root nodules on woody plants contain rhizobium bacteria.

The nitrogen cycle is finished by denitrification, which turns nitrate (NO3-) back into gaseous nitrogen (N2). The driving force behind this procedure is denitrifying microorganisms. These bacteria generate energy from nitrate rather than oxygen, which results in the release of nitrogen gas into the environment.

Azotobacter, Bacillus, Clostridium, or Klebsiella species are a few instances that belong to this category of nitrogen-fixing bacteria. These organisms must acquire their own energy source, as was previously said. Typically, they do this by oxidising organic molecules generated by the other organisms or as a result of decomposition.

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Answer:

B.

No light

C.

Explanation:

B. Maximum in A, Minimum in B

When a colored filter is placed in the path of white light, the light passes through the filter, is of the same color as that of filter.

So, when the white light passes through the red filter, the red light pass through it.

When red light pass through the green filter, the light passes through the green filter is none, so this is dark.

C.

When the nail is placed in ordinary water, it gets rusted due to the oxygen present in water.

When nail is placed in boiling water which is covered with oil, so the rust is very small quantity as boiling water also contains some oxygen.

When the nail is placed in calcium carbonate, it absorb all the moisture of air and no rusting takes place.

So, maximum rusting in test tube A and minimum rusting is in test tube C.