use the isotope graph to find the isotopes described below. In each case, give the isotope name and the isotope symbol
a. Find three isotopes with equal numbers of neutrons and protons
b. Find Isotopes with the same number of protons.
c. Find two isotopes with the same number of neutrons.
d. Find two isotopes with the same atomic mass units.

Answer:

it is the bowling ball is the correct one

the lattice energy of MgH2() is 2791 kJ/mol with a series of step when the Enthalpies of formation for calcium hydrided is given.

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Solution:

the lattice energy of MgH2() is :

ΔHf(−75. 3 kJ/mol )  =S+0.5D+IE+EA+U

ΔHf(−75. 3 kJ/mol )= 2791 kJ/mol

The papers published in MDPI Special Issues are of extremely high quality! When I published my research with MDPI (Energies Journal), it was a wonderful experience. Both the submission of the manuscript and the timing of publishing were excellent.

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The boiling point of ethanol is higher than hexane as ethanol has the presence of strong intermolecular forces.

The boiling point has been the temperature required by the substances for converting from liquids to gases. The boiling point of a substance has been based on the intermolecular forces present in the compound.

The stronger the intermolecular force, the higher will be the energy required for the conversion of the body, and the higher will be the boiling point.

The intermolecular force present in the hexane is hydrogen bonding. The force present in ethanol has been a strong van der wall force with hydrogen bonding.

The intermolecular force in ethanol is stronger than the hexane, thus ethanol has a higher boiling point than hexane.

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Answer:

I would have to say the answer is A) iron. I say this because Iron is one of the most well know conductors and in the chart it as rubber and copper as the two conductors whole Air and Iron should be the x. Plus the rest don't make good conductors they are more insulators. So logicaly it wouldn't make sense to have any of the other answers.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

According to the concept of conduction, iron  belongs in the area marked with an X.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

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According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

Answer:

False. Answer in pic above

In fact protons have no role in chemical reactions. The regrouping of atoms itself forms the new products in chemical reactions. The reactions involves the loss/gain or sharing of electrons.

A chemical reaction is a chemical change in which two or more atoms combine together to form a new product or a compound decomposes to form its constituent compounds. This  involves breaking or making of bonds.

In a chemical reaction, no change occurs in the nuclear composition but the valence electrons are involved in the reaction. Atoms loss or gain electrons or share valence electrons with other atoms to form ne compounds.

The electrostatic force of attraction or the overlapping of atomic orbitals make the new products in a chemical reaction. Hence, the statement is false.

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The molar mass of ammonium carbonate is 96 g/mol. Smelling salts are no longer used by people.

The molar mass of a compound refers to the mass of 1 mole of that substance.

The chemical formula of ammonium carbonate is (NH₄)₂CO₃

We can determine the number of atoms of each element in the compound from its chemical formula. Then we multiply the atomic weight of each element by its number of atoms in the compound and then add them together.

The atomic weight of the atoms in ammonium carbonate is as follows;

Nitrogen (N) = 14 u

Hydrogen (H) = 1 u

Carbon (C) = 12 u

Oxygen (O) = 16 u

Now multiplying each element's atomic weight by its number of atoms in the compound as follows;

Nitrogen = 14 × 2 = 28

Hydrogen = 1 × (4 × 2) = 8

Carbon = 12 ×  1 = 12

Oxygen = 16 × 3 = 48

Adding them together;

Molar mass = 48 + 12 + 8 + 28 = 96 g/mol

Smelling salts are no longer used but ammonium carbonate is still sometimes used as a leaving agent.

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Answer: this might have something to do with the pancreas

Explanation:

the pancreas produces insulin if subject a produces more insulin than subject b the reaction to the glucose will be different the pancreas breaks down the glucose into sugar and protiens hope this helps

Answer:

289.15k is the answer buddy

Answer

C. The equilibrium position would shift to produce more O₂

Explanation

If the concentration of a substance is changed, the equilibrium will shift to minimize the effect of that change. If the concentration of a reactant has increased the equilibrium will shift in the direction of the reaction that uses the reactants, so that the reactant concentration decreases.

Therefore, considering the reaction above at equilibrium, what would happen if more Na₂O2 were added is:

C. The equilibrium position would shift to produce more O₂

Answer:

0.35moles

Explanation:

when 156g of Al reacts with 2molesof Al2O3 then 27g of Al reacts with what then u cross multiply and solve ur answer

0.35moles of  Al\(_2\)O\(_3\)  will be formed when 27 grams of Al reacts completely with O\(_2\). A mole consists of precisely 6.022× 10²³particles.

A mole is just a measuring scale. In reality, it's one of the International System of Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. The levels at which chemical reactions frequently occur exclude the use of grams, yet utilizing actual numbers of atoms, molecules, or ions would also be unclear.

A mole consists of precisely 6.022× 10²³particles. The "particles" might be anything, from tiny things like electrons and atoms to enormous things like stars or elephants.

4 Al + 3 O\(_2\) → 2 Al\(_2\)O\(_3\)

moles of aluminium = 27 /26=1.03moles

The mole ratio between Al and  Al\(_2\)O\(_3\) is 2:1

mole of  Al\(_2\)O\(_3\)= 0.35moles

Therefore, 0.35moles of  Al\(_2\)O\(_3\)  will be formed when 27 grams of Al reacts completely with O\(_2\).

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The dot and cross diagram is a way of representing a molecule along with its valence electrons and respective bonds. Valence electrons are drawn as a dot or a cross, each element will have a different connotation. Around the atoms, circles are drawn that indicate the bonds and how the electrons are shared.

Carbon has 4 valence electrons and oxygen has 6, the dot-and-cross diagram of CO2 will be:

The change in color indicates the endpoint of the reaction, which can be used to determine the concentration of calcium in water.

The indicator used in this experiment is Calmagite, and to ensure that the color change is clearly monitored, the pH of the calcium solution needs to be adjusted to pH 10 using a pH buffer solution. In this experiment, when Calmagite binds to the metal ions in the water sample, the solution before EDTA titration will exhibit a color of purple, and the solution after the EDTA titration will exhibit a color of blue.How to determine calcium in water?The calcium in water can be determined by titration, which is a technique that is used to determine the concentration of a substance in a solution. EDTA titration is used to determine the concentration of calcium in water. The process involves the addition of EDTA (ethylenediaminetetraacetic acid) to the sample, which forms a complex with calcium ions. EDTA is a chelating agent that can bind to metal ions such as calcium, and in the presence of a suitable indicator, the endpoint of the reaction can be detected.A suitable indicator for this reaction is Calmagite, which is a purple-colored compound that changes color to blue when it binds to calcium ions. The pH of the solution needs to be adjusted to pH 10 using a pH buffer solution to ensure that the color change is clearly monitored. The solution before EDTA titration will exhibit a color of purple, and the solution after the EDTA titration will exhibit a color of blue. The change in color indicates the endpoint of the reaction, which can be used to determine the concentration of calcium in water.

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A polar covalent bond can best be described as a bond where electrons are unequally shared, resulting in more electrons orbiting certain atoms than others.

A covalent bond is a type of chemical bond that is formed when two non-metal atoms share their valence electrons. When the shared electrons are not shared equally, a polar covalent bond is formed.

In a polar covalent bond, electrons are drawn closer to the more electronegative atom, causing partial negative charges to arise on the more electronegative atom and partial positive charges to arise on the less electronegative atom.

Hence, a polar covalent bond can best be described as a bond where electrons are unequally shared, resulting in more electrons orbiting certain atoms than others.

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A polar covalent bond is a type of covalent bond where electrons are unequally shared due to differences in electronegativity. It leads to a slight charge difference, forming polar molecules with regions of different charges, like in water molecules.

A polar covalent bond is a type of chemical bond, particularly a type of covalent bond, where electrons are unequally distributed between the atoms involved. This unequal distribution of electrons, caused by differences in electronegativity, leads to a slight charge difference. Consequently, partially positive atoms within one molecule attract the partially negative atoms of other molecules, hence forming polar molecules with regions of different charges.

For example, the bond between hydrogen and oxygen atoms in a water molecule is a polar covalent bond. In this case, the shared electrons spend more time near the oxygen nucleus due to its higher electronegativity. As a result, the oxygen atom has a partial negative charge (δ-), whereas the hydrogen atoms have a partial positive charge (δ+).

The type of bond - whether nonpolar or polar covalent - is determined by a property of the atoms named electronegativity, a measure of an atom's ability to attract electrons toward itself. The larger the difference in electronegativity, the more polarized the electron distribution, meaning a larger partial charge on the atoms.

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Answer:

plasma membrane

Explanation:

The given reaction is the calcium carbide reaction of calcium hydroxide with water to produce acetylene.

The balanced equation is CaC2+2H2OCa(OH)2+C2H2.

Molar mass of acetylene, C2H2 = 2x12+2x1 = 26 g/mol

we get 64 g of CaC2 becomes 26 g of C2H2. 5.0g CaC2..

Molecular weight of Ca(OH)2=1(atomic weight of Ca)+2(atomic weight of O)+2(atomic weight of H)=40+2(16)+2(1)=40+32+2=74.

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Answer:

ammonium phosphite

A chemical buffer is a solution that resists changes in pH when small quantities of an acid or base are added to it.

A buffer is a solution that keeps the pH of a substance stable when acid or alkali is added to it. A chemical buffer is an aqueous solution that resists any shift in pH when small quantities of acid or alkali are added to it. The term "buffering" refers to the procedure of adjusting the pH of a solution with acid or alkali to avoid variations in pH when a small quantity of the other reagent is added. Buffers are utilized in various chemical, biochemical, and biological procedures to preserve pH and enhance the yield of the procedure.

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The element X that could be responsible for the blue color in aqueous solutions of compounds is (2) copper.

Copper compounds are known to exhibit various shades of blue in aqueous solutions. This is due to the presence of copper ions (Cu2+) which absorb certain wavelengths of light, particularly in the blue region of the electromagnetic spectrum. The absorption of light by copper ions results in the reflection of blue light, giving the solution its characteristic blue color.

Copper is a transition metal that can form different oxidation states, including Cu2+. When copper ions are present in solution, they can interact with water molecules or other ligands to form complex ions, which contribute to the blue color. Copper compounds such as copper sulfate (CuSO4) and copper nitrate (Cu(NO3)2) are examples of substances that produce blue solutions when dissolved in water.

In contrast, carbon, sodium, and potassium compounds generally do not exhibit a blue color in aqueous solutions. Carbon compounds are typically colorless or exhibit other colors depending on their chemical structure. Sodium and potassium compounds are often colorless or may produce solutions with a slight yellow tint, but they do not typically produce a strong blue color.

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Answer:

Sugar dissolves because energy is given off when the slightly polar sucrose molecules form intermolecular bonds with the polar water molecules.

Explanation:

a. The compound is 1-bromotoluene.

b. The compound is 2-bromonaphthalene.

c. The compound is 2-bromophenol.

d. The compound is 1-bromoanisole.

e. The compound is 2-bromoaniline.

a. 1-bromotoluene: In this compound, a bromine atom is attached to the 1-position of a toluene molecule. Toluene is a benzene ring with a methyl group (-CH3) attached to it, and in this case, the bromine is substituting one of the hydrogens on the methyl group.

b. 2-bromonaphthalene: This compound consists of a bromine atom attached to the 2-position of a naphthalene molecule. Naphthalene is a fused aromatic ring system composed of two benzene rings, and the bromine atom is substituting one of the hydrogens on the second benzene ring.

c. 2-bromophenol: Here, a bromine atom is attached to the 2-position of a phenol molecule. Phenol is a benzene ring with a hydroxyl group (-OH) attached to it, and in this case, the bromine is substituting one of the hydrogens on the benzene ring.

d. 1-bromoanisole: This compound consists of a bromine atom attached to the 1-position of an anisole molecule. Anisole is a benzene ring with a methoxy group (-OCH3) attached to it, and in this case, the bromine is substituting one of the hydrogens on the methoxy group.

e. 2-bromoaniline: In this compound, a bromine atom is attached to the 2-position of an aniline molecule. Aniline is a benzene ring with an amino group (-NH2) attached to it, and in this case, the bromine is substituting one of the hydrogens on the benzene ring.

These compounds are named based on the position of the bromine atom relative to the functional groups or substituents on the aromatic rings.

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Answer:

Temperature, concentration, and particle size of the reactants affect the collision frequency and energy of collisions in a chemical reaction, as predicted by the collision theory.

Explanation:

According to the collision theory of chemical reactions, for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation. The temperature, concentration, and particle size of the reactants can affect the likelihood and frequency of these collisions and therefore impact the reaction rate.

Overall, the collision theory of chemical reactions suggests that temperature, concentration, and particle size all play important roles in determining the rate of a chemical reaction. By controlling these factors, it is possible to manipulate the rate of a reaction to achieve desired results.

True. Both base substitution and frameshift mutations can result in the formation of premature stop codons, causing premature termination of protein synthesis.

Both base substitution and frameshift mutations can result in the formation of premature stop codons. A base substitution mutation occurs when one base pair is replaced by another. If this substitution results in the formation of a stop codon, it can cause premature termination of protein synthesis. A frameshift mutation occurs when one or more nucleotides are inserted or deleted from the DNA sequence. This can alter the reading frame of the genetic code and result in the formation of a premature stop codon, truncating the protein.

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Answer:

Aluminum and Zinc

Explanation:

Amphoteric oxides have both acidic and basic properties. The oxides of aluminium and zinc are examples. They form salts when they react with acids. They also react with alkalis to form complex salts.

Answer:

3.6 x (10^2) atm =  273 600 torr

Explanation:

Hope that helps

First, We need to examine the coefficients of the reactants and products then we will determine mole ratios.

Hi! To determine the mole ratios produced from the given equation,

4C₃H₆ + 6NO -> 4C₃H₃N + 6H₂O + N₂, you'll need to examine the coefficients of the reactants and products.

Your answer: There are three mole ratios produced in this equation:
1. 4 moles of C₃H₆ (propene) to 6 moles of NO (nitrogen monoxide)
2. 4 moles of C₃H₃N (acrylonitrile) to 6 moles of H₂O (water)
3. 6 moles of NO (nitrogen monoxide) to 1 mole of N₂ (nitrogen gas)

These mole ratios are useful for predicting the amounts of reactants and products in chemical reactions.

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Answer:

,

Explanation:

The earth system process from slowest to fastest is that Contact of Indian tectonic plate with Eurasian plate; uplift of the Tibetan Plateau; formation of the Gobi Desert; yearly monsoon wind cycle.

The angle of a light beam affects the intensity and the amount of light reflected or transmitted through a process known as the "angle of incidence." When a light beam strikes a surface, the angle between the incoming light beam and the surface is called the angle of incidence. This angle plays a crucial role in determining the amount of light reflected or transmitted.

When the angle of incidence is small (light beam nearly perpendicular to the surface), more light is transmitted through the surface, and less is reflected. As the angle of incidence increases (light beam more parallel to the surface), the amount of light reflected also increases, while the intensity of the transmitted light decreases.

This phenomenon occurs due to the interaction of light with the surface material, which can either absorb, transmit, or reflect the incoming light, depending on the angle of incidence and the material's properties. The angle at which the light beam is incident on the surface also affects the intensity of the reflected light.

At a specific angle, called the "critical angle," the light beam is no longer transmitted but is entirely reflected, a phenomenon called "total internal reflection." The critical angle depends on the refractive indices of the two materials at the interface. When the angle of incidence is greater than the critical angle, all the light is reflected, and none is transmitted.

In summary, the angle of a light beam significantly influences the intensity and the amount of light reflected or transmitted by a surface. The angle of incidence determines the amount of light reflection, with a smaller angle leading to more transmission and a larger angle leading to increased reflection. The critical angle, in particular, plays a crucial role in determining the behavior of the light beam at the surface.

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Answer:

Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 10−16 seconds; this has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the Universe, and theoretical investigations on cosmological evolution had 8Be been stable.

Explanation:

The wheels will be completely used up and  it is the limiting reactant in this case.

The limiting reactant is the reactant that is completely used up in a reaction, and thus determines when the reaction stops.

The wheels will be completely used up and  it is the limiting reactant in this case.

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