The new pressure of the container will be 1.14 atm and the most appropriate formula for solving this problem is P/T constant with pressure and temperature as variables.
The most appropriate formula for solving this problem includes the temperature and pressure as variables.
P/T = Constant
Because the volume of the container is constant.
The initial pressure p is 1atm, initial temperature t is 273K and the final temperature T is 311K, the final pressure P will be,
P/T = p/t
Putting values,
P/311 = 1/273
P = 311/273
P = 1.14 atm.
So, the final pressure of the container is 1.14atm.
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Complete question - One mole of an ideal gas is sealed in a 22.4-l container at a pressure of 1 atm and a temperature of 273 k. the temperature is then increased to 311 k , but the container does not expand. what will the new pressure be? part a the most appropriate formula for solving this problem includes only which variables? enter the required variables, separated by commas (e.g., p,v,t).
How does matter change in a nuclear reaction?.
Nuclear reactions convert matter to energy, but the total sum of both mass and energy remains unchanged.
Energy changes accompany nuclear processes, just like they do chemical reactions. However, compared to even the most intense chemical reactions, the energy changes in nuclear reactions are immense. In actuality, the energy shifts in a typical nuclear reaction are so significant that they cause a quantifiable shift in mass. In a nuclear reaction, matter is never destroyed; rather, it is merely changed state. The smallest, most quantum levels of energy are what create matter, and this energy is transported from one location or condition to another.
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which of the following compounds are soluble in water? check all that apply. which of the following compounds are soluble in water?check all that apply. cus caco3 nh4i feso4
The two hydroxy groups in ethylene glycol combine with water to produce hydrogen bonds. Better hydrogen bonding amount and intensity, as well as greater water solubility.
In its most fundamental form, what is a hydrogen bond?
Hydrogen bonds are a particular type of dipole-dipole attraction between molecules, as opposed to forming a covalent bond with a hydrogen atom. It results from the attraction of a hydrogen atom covalently bound to a very electronegative atom, such as an N, O, or F atom, and another extremely electronegative atom.
An example of a hydrogen bond
For instance, in the highly electronegative water molecules (H2O), hydrogen is chemically joined to the oxygen atom. As a result, the interaction between the hydrogen atoms in water molecules known as dipole-dipole
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3. why is the average atomic mass in amu(atomic mass unit) of a carbon-12 atom reported as 12.011 instead of 12 on the periodic table of the elements?
What are the pure substances that make up all kinds of matter and are made up of atoms.
An element cannot be converted together into simpler substance since it is a pure material made up of just one type of atom.
What does a matter mean in chemistry?Matter is everything that occupies space and appears to have mass; in other words, substance is really the "stuff" that now the cosmos is made of. They don't change into other elements through normal chemical processes and have distinct chemical and physical properties.
What is it mean to utilize an example of matter?A material that is frequently referred to this as matter and that has a specific mass and volume distributed throughout space. Matters include things like pens, notebooks, toothbrushes, glasses, and milk, to name a few.
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a chemist adds of a copper(ii) sulfate solution to a reaction flask. calculate the millimoles of copper(ii) sulfate the chemist has added to the flask. be sure your answer has the correct number of significant digits.
A chemist adds 0.50L of a 0.485M of a copper(II) sulfate solution to a reaction flask. The number of millimoles of copper(II) sulfate the chemist added to the flask is 242.5 millimoles.
The molarity of a solution is defined as the number of moles of a solute present in the definite amount of a solution. It is calculated by the formula
Molarity=moles/volume(in L)
Rearrange the formula for moles
moles=Molarity×volume(in L)
We have volume of solution, which is 0.50L and molarity is 0.485M, which is 0.485 mol/L. Plug values in the formula
moles=(0.485 mol/L)×0.50 L
moles=0.2425 mol
moles = 0.24 mol
Convert the above moles into millimoles. Since 1mol=1000mmol
0.24 mol×(1000 mmol/1 mol)
=240 mmol
Therefore, the number of millimoles that chemist added in the flask is 240 mmol.
Your question will be incomplete but the complete question would be like shown below
a chemist adds 0.50L of a 0.485M of a copper(ii) sulfate solution to a reaction flask. calculate the millimoles of copper(ii) sulfate the chemist has added to the flask. be sure your answer has the correct number of significant digits.
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How many valence electrons is a full shell?.
There are 8 valence electrons in a full shell.
The eight or octet rule is the tendency of atoms to have eight electrons in their valence shells. The eight electrons in this last shell make the atom stable and unreactive. For example, noble gases are among the least reactive chemical elements in nature.
The full valence shell is the most stable electronic configuration. Other groups of elements have partially filled valence shells and gain or lose electrons to achieve stable electronic configurations. Atoms can gain or lose electrons to achieve the most stable electronic configuration, the full valence shell. Most elements important in biology require 8 electrons in their outermost shell to be stable.
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A sample of helium gas is stored in a tank at 18 atm and 20°c. How do these conditions compare to the conditions of a gas at stp?.
The conditions compared are higher pressure and higher temperature than STP.
1.Diffusion through a plane wall can be thought of as being one-dimensional since D≥L.
2. Quasi-steady diffusion occurs when pressure changes are slow enough to allow for the assumption of steady-state conditions for diffusion through fused silica at any given time.
3. The density of stationary medium is constant.
Helium, the lightest of the noble gases, has actually been discovered, and helium is the only element in the periodic table that has been discovered by astronomers.
4. Helium is the element in the upper right corner of the periodic table with atomic number 2. It is the first of the noble gas family. It contains
atomic orbitals and was named by Lockyer and Frankland. Its name comes from the Greek word "Helios" which means sun. Scientists knew that the sun had an enormous amount of helium in it before it was discovered.
5. Helium is classified as a noble gas because the outermost electron orbital is occupied by her two electrons. Helium is also found in lasers, compressed air tanks and nuclear reactor coolants.
6. Has the lowest boiling and melting points among other elements. When hydrogen fuses in a star, a large amount of helium is produced.
7. In the open air, helium exerts very little pressure.
8. Ideal gas behavior is displayed by helium.
PV=nRt
P∝ t
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ws 9 coordination compounds name part i. 1. name the following coordination compounds: a) k3[fecl6] b) [zn(h2o)6](no3)2 c) k[pt(nh3)cl3] d) [fe(c2o4)3] 3- e) [cu(h2o)2(nh3)2]co3 2. write the formula for each coordination compound: a) sodium tetracyanoaurate(iii) b) tetraamminedichloroaluminum bromide c) potassium hexanitrocobaltate(iii) d) hexamminenickel(ii) sulfate e) sodium tris(oxalato)chromate(iii) f) bis(ethylenediamine)copper(ii) chloride
The name of the coordination compound k3[fecl6] is potassium hexacyanoferrate (III).
A chemical compound was a substance that contains atoms from many chemical elements bonded together through chemical bonds. It is made up of numerous similar molecules. Thus, a molecule with just one type of atom would be never a compound.
The name of the compound is:
a) k3[fecl6] = potassium hexacyanoferrate (III)
b) [zn(h2o)6](no3)2 = zinc nitrate Hexahydrate
c) k[pt(nh3)cl3] = potassium triaminetrichloroplatinate(II)
d) [fe(c2o4)3] 3 = Potassium trioxalato Ferrate(III)
e) [cu(h2o)2(nh3)2]co3 = Pentaamminediaquacopper(II) chloride
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Part D Br Based on your answers to Parts A, B, and C select the best Lewis structure (electron-dot structure) for HCH View Available Hint(s) C:Br:H:
CH₃Br (Methyl bromide or bromoethane) is an alkyl halide. It only possesses one carbon atom. Three C-H bonds and one C-Br bond make up CH3Br's Lewis structure. The core atom is carbon, while the bromine atom possesses three lone pairs.
What is a Lewis structure?Lewis structures are diagrams that show the valence electrons of atoms within a molecule. They are often referred to as Lewis dot structures or electron dot structures.
What is the Lewis structure of CH₃Br?Since Hydrogen is always on the outside and Carbon is less electronegative than Bromine, it is always positioned in the middle with Bromine being placed on top. The CH3Br molecule contains the elements hydrogen, carbon, and bromine. There are a total of 14 valence electrons in CH3Br.
The valence electrons given by:
Hydrogen atoms = 1×3 = 3
Carbon atom = 4×1 = 4
Bromine atom = 7×1 = 7
Hence, the total valence electrons = 3 + 4 + 7 = 14
The electron-dot-structure is attached below.
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What values does it reinforce Marxist criticism?.
The superstructure is composed of the institutions and ideals of humanity that result in artistic and literary works. Thus, class, socioeconomic standing,
What exactly are human institutions?Institutions are institutions of laws and customs that have been created by people to mold and control personal behavior. Most definitions of institutions assume some degree of durability and continuity. Institutions include, for example, laws, regulations, social customs, and norms.
What sort of establishment is that?Because they contribute to the society's ability to thrive, societies create social structures, or institutions, that endure. These institutions also include family, the economy, the government, and the educational system.
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Based on the bond angles in CH4, NH3, and H2O, rank the magnitude of these repulsions.
LP -LP > BP - LP > BP - BP
Answer:
This is the answer of this question hope you're satisfied.
an original sample of a radioisotope had a mass of 50 grams. after 3 days, 6.25 grams of the sample remained. what is the half-life of the radioisotope?
The half-life of the radioisotope is 1.2 days.
Sample remained / original sample
6.25/50 = 0.125
n log 0.5 = 0.125
n = log 0.5 / 0.125 = 2.408
calculation of half life is 3 days divided by 2.408 half lives is equal to 1.2 days.
A quantity (of substance)'s half-life (symbol t12) is the amount of time needed for it to decrease to half of its original value. The phrase is frequently used in nuclear physics to refer to how long stable atoms last or how quickly unstable atoms decay radioactive. In a broader sense, the phrase is used to describe any exponential decay (or, very rarely, a non-exponential decay). For instance, the biological half-life of medications and other chemicals in the human body is discussed in the medical sciences. In exponential growth, doubling time is the opposite of half-life.
In the early 1950s, the original term, half-life period, which dates back to Ernest Rutherford's discovery of the principle in 1907, was condensed to half-life.
In his age-related research, Rutherford used the concept of a radioactive element's half-life.
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what will be the ratio of the rate of effusion of carbon dioxide (co2) to the rate of effusion of nitrogen gas (n2) assuming temperature and pressure are the same?
According to this ratio of effusion rates, the gas with the lower molar mass or density has a higher rate of effusion. The rate is 1.07 after being adjusted for the necessary significant figures. N2 is 1.07 times as fast as O2 according to this.
What is the ratio of effusion rate between O2 and N2?The square root of the inverse ratio of the molar masses or densities of two gases is equal to the ratio of their effusion rates, which is expressed as a ratio.The square root of the molar mass of a gas affects its effusion rate in an inverse manner.The larger the gas particle, the slower it will effuse at a given temperature and pressure, this means.This can be expressed mathematically as follows:Rate of effusion of gas A /Rate of effusion of gas B = √Molar Mass of gas B/√Molar Mass of gas A = √density of gas B /√density of gas A
Discussion and Explanation: Let's start by thinking about the causes of gas effusion. Small pores or holes are possible in containers. While tiny, these openings are bigger than the gas molecules. Until they make contact with something, gas molecules in the container move about at random. Alternatively, it might be a different molecule or a container side. Additionally, by chance, a gas may pass through one of those openings rather than striking the container's side. A random molecule moving through the container's wall is what is meant by effusion. Helium-filled balloons are an everyday illustration of this: It initially floats in the air and is buoyant, but after a few days it hangs down or floats a few inches over the ground (if at all). Through the balloon's tiny perforations, helium has leaked out.The effusion rates for two gases, the molar mass of a gas, or the density of a gas may all be calculated using Graham's Law. According to this ratio of effusion rates, the gas with the lower molar mass or density has a higher rate of effusion.Calculations using Graham's LawAlternatively, the equation would be:
The rate of N2 effusion is 32.0 g/mol.
Rate of O2 effusion is 28.0 g/mol.
This amounts to:
Rate of N2 effusion is 1.069044968.
Oxygen effusion rate
After making the necessary significant figure adjustments, we determine that the rate is 1.07. This indicates that the speed of N2 is 1.07 times that of O2. Although barely, it is faster.
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a hydrogen atom is in its fifth excited state. the atom emits a 1090-nm photon. determine the maximum possible orbital angular momentum of the electron after emission.
The possible angular momentum was found to be √ 20 hbar.
Define angular momentum ?
If you try to balance on a bicycle without a kickstand, you will most likely fall off. However, as you start pedalling, these wheels gain angular momentum. They will oppose change, making balance more difficult.
The attribute of any rotating object given by moment of inertia times angular velocity is defined as angular momentum.
It is the attribute of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, which means that the direction is taken into account in addition to the magnitude.
a vector quantity that is a measure of a rotating body's or system's rotational momentum, equivalent in classical physics to the product of the body's or system's angular velocity and moment of inertia with respect to the rotation axis, and oriented along the rotation axis.
The possible angular momentum was found to be √ 20 hbar.
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Calculate the mass in grams of al produced if 100 grams of al2o3 is heated at high temperature.
The mass in grams of al produced if 100 grams of al2o3 is heated at high temperature is 188.95 g
The molar mass of a substance is the mass in grams of one mole of the compound. In a substance, the quantity of entities gift e.g. atoms, molecules, ions, is described as a mole. A mole of any substance is 6.022×1023 molecules.
Aluminum burns in oxygen according to the following equation:-
4Al + 3O₂ ----------> 2Al₂O₃
This means that the mole ratio of aluminum burnt to that of alumina produced is 4:2 or 2:1.
Recall that: mole = mass/molar mass
mole of 100 g aluminum = 100/26.98
= 3.71 moles
Thus, a mole of alumina produced = 3.71 /2
= 1.85 moles
Mass of alumina produced = mole x molar mass
= 1.85 x 101.96
= 188.95 g
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What are the advantages of oxygen cycle?.
The atmosphere's diatomic oxygen (O2) can regenerate thanks to THE OXYGEN CYCLE. About 21% of the atmosphere is made up of oxygen.
How is pure oxygen created?The separation of air using either a cryogenic distillation process or a vacuum swing adsorption technique is the most popular commercial method for creating oxygen. Separating them from air also yields nitrogen and argon.
Can people breathe oxygen one?No. All forms of life are very poisonous to the oxygen radical (O•). Although it is still created in very small amounts by live cells, we have specific enzymes to handle it.
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what is the concentration of 952 grams of ammonium carbonate are dissolved to make 1750 ml of solution expressed in molarity?
The concentration of 952 grams of ammonium carbonate are dissolved to make 1750 ml of solution expressed in molarity is 54.4 g/mL
(%m/v.) =mass of solute (in g.)/volume of solution (in mL.) x100.0
= 952g. (NH4)2CO3/1750mL. x100
= 0.544x 100
(%m/v.) = 54.4g/mL. or 54.4 percent concentration of. ammonium carbonate solution.
It is used as a leavening agent and as a smelling salt because heating it causes it to quickly degrade into gaseous ammonia and carbon dioxide. Ammonium Carbonate is an odorless, colorless, or white, crystalline (sand-like) powder. It is utilized in pharmaceutical, reagents, smelling salts, tanning, mordant dyeing, and baking powders. High levels of ammonia in the air can cause immediate burning in the eyes, nose, throat, and respiratory system as well as lung damage, blindness, or even death. Lower concentrations can make you cough and irritate your nose and throat when you breathe them in.
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the half-life of radium-226 is 1590 years. if a sample contains 400 mg, how many mg will remain after 3000 years?
26.86 milligrams will remain after 3000 years
How many mg will remain ?Half-life of radium-226 is 1590 years. if a sample contains 400 mg
The half life =1590years
t0=100
time=0
t1=50
time=1590
t2=25
time=2(1590)
t3=12.5
time=3(1590)
an=a0⋅(1/2)^n1
period=159
years n= 3000/1590=1.896
an = 100⋅(1/2) ^1.896
an=26.86 milligrams
26.86 milligrams will remain after 3000 years.
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26.86 milligrams will remain after 3000 years
How many mg will remain ?Half-life of radium-226 is 1590 years. if a sample contains 400 mgAll radium isotopes are radioactive, with radium-226 having the longest half-life at 1600 years. Ionizing radiation is emitted as a byproduct of radium decay, which can excite fluorescent compounds and result in radioluminescence. Uranium ores contain small amounts of the alkaline earth metal radium. Radon gas is produced when its most stable isotope, 226Ra, decays after 1602 years.The half life =1590years
t0=100
time=0
t1=50
time=1590
t2=25
time=2(1590)
t3=12.5
time=3(1590)
an=a0⋅(1/2)^n1
period=159
years n= 3000/1590=1.896
an = 100⋅(1/2) ^1.896
an=26.86 milligrams
26.86 milligrams will remain after 3000 years.
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What is the expected charge on a tetrahedral molecular ion made of one nitrogen atom and four hydrogen atoms?.
Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore the charge on the molecule is +1.
What is Ions?Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.
Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.
When one nitrogen atom is connected to four hydrogen atoms, then the molecule that is formed is NH₄⁺. The shape and geometry of this molecule is tetrahedral and the charge on the molecule is +1.
Therefore the charge on the molecule is +1.
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which of the following procedures will allow the student to determine the rate constant, k , for the reaction? responses plot ln [x] versus time and determine the magnitude of the slope. plot ln [x] versus time and determine the magnitude of the slope. plot 1/[x] versus time and determine the magnitude of the slope. plot 1/[x] versus time and determine the magnitude of, the slope. run another trial of the experiment with a different initial concentration, plot the data on the same graph, and see where the curves intersect. run another trial of the experiment with a different initial concentration, plot the data on the same graph, and see where the curves intersect. run another trial of the experiment at a different temperature, plot the data on the same graph, and see where the curves have the same slope.
c) plot ln [x] versus time and determine the magnitude of the slope.
What is a rate constant?
The rate and direction of a chemical reaction are quantified in chemical kinetics by the reaction rate constant, or reaction rate coefficient, k.
For reactants A and B to combine to generate the product C
a A + b B → c C
The reaction rate frequently takes the following form:
[tex]r=k(T)[A]^{m} [B]^{n}[/tex]
Here, [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is occurring throughout the volume of the solution, and k(T) is the reaction rate constant that varies on temperature.
Check the attached file for the graph.
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Check the attached file for the graph
1 moles of an ideal gas are in equilibrium at fixed pressure (e.g. 106 pa) and temperature (e.g. 300 k). 1) what is the derivative of the gas' g with respect to volume for those conditions? at fixed t,p,n dg/dv
The ideal gas derivative of the gas can't be defined since the volume is constant.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, the given parameters are
P = 106 Pa
T = 300 K
n = 1 moles
Find the volume of gas
P . V = n . R . T
106 . V = 1 . 8.31 . 300
V = 23.52 m³
The volume is constant lead the change in volume being zero and the derivative of gas being undefined.
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when chlorine gas, cl2, is reduced to cl- ions, how many electrons does each chlorine molecule take on?
Chlorine atoms make up the chlorine gas. Each chlorine gains an electron during the reaction to create a chloride ion (Cl-), which is the process known as reduction.
What exactly is a chloride ion?The anion (negative charge ion) called Cl is the chloride ion. It is created when a molecule like hydrogen chloride dissolves in water or even other polar solvents, or when the halogen element chlorine obtains an electron. Sodium chloride and other chloride salts are frequently very miscible in aqueous.
Why are chloride ions charged positively?Again, the gain of one electron is more power for chlorine than the loss of seven. In order to produce an ions with 17 proton, 17 neutron, and 18 electron, it usually gains an electron.
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How did government policies contribute to the industrial revolution?.
Governments can create subsidies, taxing the public and giving the money to an industry, or tariffs, adding taxes to foreign products to lift prices and make domestic products more appealing.
How did government policy influence industrial growth?How did the American government affect industrial growth? It provided incentives/enticements for growth, as well as gave money to land and resources.The British government was only responsible for the maintenance of religion and defense. The government contributed to the industrial revolution through loans and expenses. The debt acquired by the government was extremely high. All the money was spent in England and Ireland, in naval supplies and this led to a constant demand, which is why machinery was developed to supply it.The British government passed laws to keep businesses outside the country from learning about manufacturing innovations.In the long run, by encouraging people to buy more American goods, the protective tariffs were supposed to help the country produce more stuff, create more jobs and keep dollars in the country.Historians have identified several causes for the Industrial Revolution, including: the emergence of capitalism, European imperialism, efforts to mine coal, and the effects of the Agricultural Revolution.To learn more about the industrial revolution refer to:
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in the kinetic molecular theory of gas behavior, particles of a gas tend to move and collisions between them are .
In the kinetic molecular theory of gas behavior, particles of gas tend to move rapidly and collisions between them are elastic.
A lot of the fundamental ideas of thermodynamics were established with the help of the kinetic theory of gases, a straightforward yet historically significant classical model of the thermodynamic behavior of gases. According to the model, a gas is made up of numerous identical submicroscopic particles (atoms or molecules) that are all moving rapidly and randomly.
It is considered that they are substantially smaller in size than the particle spacing on average. Random elastic collisions between the particles and with the container's walls occur between the particles. The simplest form of the model only takes into account the interactions within the ideal gas.
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for the reaction and at 329 k and 1 atm. this reaction is favored under standard conditions at 329 k. the entropy change for the reaction of 1.70 moles of at this temperature would be j/k.
The reaction is product favored under standard conditions at 329 K.
The balanced chemical reaction is given as follows:
2 NH₃ + 3 N₂O → 4 N₂ + 3 H₂O
ΔH° = 329 K
ΔS° = 1.70 KJ / K
∴ ΔG° = ΔH° - TΔS°
⇒ΔG° = 329 KJ - 329 × 1.70 KJ / K
⇒ΔG° = 329 KJ - 559.3 KJ
⇒ΔG° = -230.3 KJ
As ΔG° has negative value for the above reaction that is ΔG°<0 so the reaction is product favored.
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for which one of the following elements is the second ionization energy over ten times larger than its first ionization energy? explain why in at least a sentence.
High energy is needed for this. As a result, sodium's second ionization energy is the highest.
Where is the ionization energy?
The positive ionization energy of neutral atoms indicates that the action is endothermic. The ionization energy of an atom is inversely correlated with the separation of its outermost electrons from its nucleus. In physics, ionization energy is frequently expressed in electronvolts (eV) or joules (J)
What is ionization, exactly?
Any process by which electrically neutral atoms or molecules are changed into electrically charged atoms or molecules (ions) through the gain or loss of electrons is referred to as ionization in chemistry and physics.
In groups, the ionization energy drops while rising from left to right during the course of a period. Helium has the highest initial ionization energy as a result.
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Iron particles in basalt on the ocean floor tell scientists select answer. In two adjacent magnetic stripes, the iron particles show select answer alignments.
Basalt records the orientation of the magnetic field of the earth which shows that the magnetic field of the earth is continually changing.
The iron particles found in the ocean floor are called Basalt and are made of high-density materials.
Basalt is an igneous rock that is formed from the quick cooling of lava rich in magnesium and iron when exposed at or very near the surface of a terrestrial planet or the moon. Basalt rocks are usually formed when the volcanic basaltic Lava rapidly cools from the deep interior of the earth's crust equivalent to plutonic gabbro-norite magma and gets exposed to the Earth surface. Gas cavities are absent in the basalt lows and these floors are generally quite thick and extensive.
Rock Hardness property is usually measured to determine the compressive fracture strength, to determine whether a rock is a soft rock or a hard rock. Rock hardness property is common among the densest, fine-grained textured rocks, such as basalt.
Basalt rocks are mainly composed of pyroxene olivine and plagioclase, these rocks are rich in Magnesium and iron. The most porphyritic minerals in basalt rocks are augite and olivine. Basaltic lavas are pumiceous and spongy.
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How is water separated into hydrogen and oxygen?.
Electrolysis is the process by which an electric current splits water into hydrogen and oxygen.
If the electricity is generated from renewable sources such as solar or wind, the resulting hydrogen is also renewable and has numerous emission benefits. The process of splitting water into hydrogen and oxygen using electricity is known as electrolysis. The process of electrolysis of water, also known as electrochemical water splitting, is the use of electricity to decompose water into oxygen and hydrogen gas. This hydrogen gas can be used as hydrogen fuel or mixed with oxygen to produce oxyhydrogen gas, which is used in welding and other applications.
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The equation for the reaction is:
2 Na + Br2 → 2 NaBr
1 g of bromine reacts with sodium.
Calculate the number of bromine molecules in 1 g of bromine.
1 mole of bromine contains 6.02 × 1023 bromine molecules.
Relative formula mass (Mr) of bromine = 160
One mole of bromine molecule weighs 160 g and the number molecules in one mole of any substance is 6.02 ×10²³. 1 g of Br₂ is 0.0062 moles thus number of molecules is 0.037 ×10²³.
What is Avogadro number?One mole of any substance contains 6.02 ×10²³ number of atoms. This number is called Avogadro number. Thus, one mole of every elements contains Avogadro number of atoms.
Similarly, one mole of every molecule or compound contains 6.02 × 10²³ molecules. Br₂ weighs 160 g for one mole. One mole of Br₂ contains 6.02 × 10²³ molecules.
Number of moles in 1 g of bromine gas is 1/160 =0.0062 moles. Thus number of molecules in 0.0062 moles of Br₂ is
= 0.0062 × 6.02 × 10²³
= 0.037 × 10²³
Therefore, the number of molecules in 1 g of Br₂ is 0.037 × 10²³
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What is the purpose of a coefficient?.
In a polynomial, series, or expression, a coefficient is a multiplicative factor that can be any expression, albeit it is typically a number.
In science, what do coefficients mean?Coefficients are constant terms that are connected to a product's characteristics in mathematics and science. The coefficient, for instance, is the quantity that never changes in the equation used to calculate friction.
What do subscript and coefficient mean?For balancing equations, coefficients are needed. Prior to compounds or elements, they are identified by a number. Elements' numbers are denoted by subscripts, which appear after their symbols. Two H atoms are represented by the "2" in H2O. if an element sign is followed by a subscript.
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