The Valency number in carbon in CH4 is 4 where it shares four electrons with four Hydrogen atoms.
The Methane has its molecular formula CH4 . It is formed by one carbon atom and four hydrogen atoms. Hydrogen has its valency 1 and carbon being tetravalent needs four valence electrons to acquire noble gas configuration, where it shares its 4 electrons with four hydrogen atoms. The valency of carbon atoms in CH4 is 4. The or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. Valency of carbon is always 4 because it needed 4 more electron to complete its octet. The Valency is always fix of every element.
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How do you calculate 1 mole of methane?
1 mole of methane is of 16 g and is equal to Avogadro's number i.e. 6.022*10^23 .
What is Methane?Methane is a primary source of natural gas and it is a hydrocarbon as well.Methane has a formula of CH4.Methane's atomic mass is 16g.Methane's mass of 16 g = 12g of C +4*1g of Hydrogens.As methane(CH4) is considered a greenhouse gas (GHG), its presence in the atmosphere has an impact on the planet's climate and temperature. There are many anthropogenic (influenced by humans) and natural sources which release methane.Hence, now you know that atomic mass of Methane is 16 g.
so the 16 g of Methane consist of 6.022*10^23 atoms in that mass.
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__________ is the splitting of a large nucleus, while _________ is the combining of small nuclei, but the large amount of energy produced from either comes from
The nuclear fission is the splitting of a large nucleus, while nuclear fusion is the combining of small nuclei, but the large amount of energy produced from either comes from.
What is nuclear fission ?Nuclear fission is the process of breaking down of a heavy nuclei into two lighter nuclei with more stability and life time. Heavy unstable radioactive isotopes undergo fission by the emission of charged particles such as alpha or beta.
This process releases massive energy. Nuclear fusion is the combination of light nuclei to form a relatively heavy nuclei. This process release tremendous energy than nuclear fission.
The energy source of stars is nuclear fusion. Nuclear fission is used in nuclear power generators.
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What is the total number of atoms in 1.0 mole of co2?
The total number of atoms in 1.0 mole of CO2 is 6.022 x 10^23 atoms/mol. 6.022 x 10^23 is also represents the avogadro's number.
To find the total number of atoms in 1.0 mole of CO2, you can use Avogadro's number, which is the number of atoms in one mole of a substance. The number of atoms per mole is 6.022 x 1023.
You can calculate the total number of atoms in 1.0 mole of CO2 by multiplying the number of moles by Avogadro's number:
1.0 mole x 6.022 x 10^23 atoms/mol = 6.022 x 10^23 atoms
So, there are 6.022 x 10^23 atoms in 1.0 mole of CO2.
It's important to note that CO2 is composed of one carbon atom and two oxygen atoms, so the Avogadro's number applies to the total number of atoms in one mole of CO2, which is one carbon atom and two oxygen atoms.
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What is reduction reaction with two example?
Reduction is the transfer of electrons between species in a chemical reaction, where there is a process of gaining electrons or a decrease in the oxidation state by an element.
A classic example of reduction is rusting: it is when oxygen reacts with iron to form rust. In this reaction, oxygen is reduced as it accepts electrons from the iron; the acceptance of electrons by oxygen is called reduction, while the iron losing electrons is called oxidation.The copper ion undergoes reduction by gaining electrons to form copper. The magnesium undergoes oxidation by losing electrons to form the 2+ cation. Or, you can view it as magnesium reducing the copper(II) ions by donating electrons. Magnesium acts as a reducing agent.Reduction ChemistryA reduction chemical reaction involves increasing electrons associated with a single atom or a group of atoms. A reduced atom, therefore, accepts electrons from another atom. The atom which supplies the electrons is thereby oxidized. Reduction involves a half-reaction in which a chemical species decreases its oxidation number, usually by gaining electrons. The other half of the reaction involves oxidation, in which electrons are lost. Together, reduction and oxidation form redox reactions.
Reduction is also the gain of electrons by a substance. It is the loss of oxygen from a substance.
Oxidant + e- = Product Oxidant has been reduced
For example, copper(II) oxide can be reduced to form copper when it reacts with hydrogen:
copper(II) oxide + hydrogen = copper + water
CuO + H2 = Cu + H2O
The oxidizing agent is the chemical that causes oxidation by providing oxygen, whereas the reducing agent causes the other chemical to be reduced by removing oxygen.
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How many molecules are there in 1.00 mole of molecular sulfur?
There are 6.022 × 10²³ molecules present in 1 mole of molecular sulfur.
According to Avogadro’s law, "under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules."
Therefore 1 mole of any substance is equal to 6.022 × 10²³ atoms , molecules of ions present in it. 6.022 × 10²³ is known as Avogadro's number.
This law is valid for real gases at high temperature and low pressure.
This relation can be derived from the kinetic theory of gases for the assumption of a perfect or ideal gas.
The atomic mass of sulfur is 16 g
The molecular mass of sulfur S₂ is
= (16× 2) g/mol
=32g /mol
Thus, 32 g/mol of sulfur contains 6.022 × 10²³ molecules of sulfur.
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How many carbon atoms are in one mole of methane molecules?
The number of the carbon atoms are in the one mole of the CH₄, methane molecule is one carbon atom. It also contains the four hydrogen atom.
The given chemical compound is the methane . The chemical formula of the methane molecule is the CH₄. The methane molecule made up of the two elements. The carbon and the hydrogen . The methane molecules contains the one carbon atom and the four hydrogen atom.
The mole of the methane , CH₄ = 1 mole
The molar mass of the methane is 16 g/mol.
The 1 mole of the methane contains = one carbon atom + 4 hydrogen atoms.
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What is a mole on face?
Moles (nevi) are just a form of skin growth that is quite frequent. Clusters with pigment-forming cells cause them to look as small, dark brown dots (melanocytes).
The majority of people possess 10 to 40 moles which form during childhood through adolescence and might even change or vanish over time.
Moles form when skin cells cluster together rather than spreading evenly throughout the skin. Melanocytes are the cells that produce the pigment that provides skin its natural color. Moles might darken after sun exposure, during adolescence, as well as during pregnancy.
Congenital moles, dysplastic nevi, acquired nevi, as well as spitz nevi are the four most common kinds of moles.
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a substance that takes part in and undergoes change during a reaction.
A reactant is a substance that takes part in and undergoes change during a reaction.
What is reaction?Reaction is the process of responding to an event, action, or stimulus. It can refer to a mental, physical, or emotional response. In the physical world, it can be seen as a response to an external force such as gravity, motion, or pressure. In the biological world, reaction can refer to a response to a chemical, biological, or psychological stimulus. In the psychological world, reaction can refer to an emotional or mental response to a particular situation or event. In social situations, reaction can refer to the way a person responds to the actions of others. In all cases, it is important to note that a reaction is a response to a stimulus and not an action itself.
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In a certain chemical reaction, the bond energy of the products is 67 kj and that of the reactants is 52 kj. Because energy is conserved, how much potential energy does the system release or absorb?.
-15J, It is exothermic since the reaction is negative (releases heat to surrounding). 52 kJ and 67 kJ, respectively, are the bond energies between the reactants and products of a particular chemical reaction.
An exothermic process In an exothermic process, no chemical reaction takes place. Here, a molecule emits heat in order to shift its phase. For instance, as water freezes into ice, heat is lost into the surroundings. In contrast to endothermic reactions, these reactions have the following chemical equation: Reactants plus products equal energy. Definition of an exothermic reaction A reaction that releases heat or light as energy is known as an exothermic reaction. -15J, It is exothermic since the reaction is negative (releases heat to surrounding).
H = 52 - 67 = -15J
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which equation shows the process of photosynthesis?
Answer: H2O + CO2 ---> O2 + C6H12O6
Explanation:
Some metals have a molecular structure that makes them good conductors. Explain how understanding this relationship can help engineers make more powerful batteries.
Answer:eoiru[nq45[wrt
Explanation:
calculate the ph of a solution prepared by dissolving 0.40 g of na2o in enough water to make 0.500 l of solution.
The pH of the solution prepared by dissolving 0.40 g of Na2O in enough water to make 0.500 L of solution is 11.35.
To calculate the pH, first we need to find the concentration of hydroxide ions in the solution. Na2O is a strong base, meaning that it fully dissociates in water to form 2 hydroxide ions (OH-) and 1 sodium ion (Na+).
We can use the formula:
[tex]molarity = moles of solute / liters of solution.[/tex]
The moles of Na2O can be calculated by multiplying the mass of Na2O (0.40 g) by its molar mass (61.98 g/mol) and then dividing by 1000 to convert it to liters. We can use this molarity value to find the hydroxide ion concentration by multiplying it by 2.
The pH of a solution can be calculated from the hydroxide ion concentration by using the formula:
[tex]pH = -log[OH-][/tex]
Plugging in the hydroxide ion concentration value of 0.04 M, we get a pH of 11.35.
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Where exactly on teh map does the size and concentration of the boxes apperar to be the highest
The concentration and size of the boxes appear to be highest near Broad Street.
What are communicable diseases?Communicable diseases are those diseases that can be transferred from one person to another and one animal to another animal or person.
The black boxes show the relative numbers of cholera-related fatalities. Because of the lack of socioeconomic development in the locations where it occurs, cholera is known as a disease of poverty.
Overpopulated camps are ideal for a cholera breakout. Other humanitarian emergencies that interrupt water and sanitation infrastructure include earthquakes, civil upheaval, and war.
Therefore, near Broad Street, both the quantity and size of the boxes seem to be at their maximum.
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The question is incomplete. Your most probably complete question is given below:
The Spread of 30The Spied of- Tools Communicable diseases are spread between indivuals by different methods, but they are all caused by pathogens, which are commonly called "germs." Knowledge of pathogens and the ways in which they can be spread helps humans understand and prevent disease out Model 1 - The 1854 London Cholera Outbreak Relative number of deaths due to cholera Portland S. St. Annes Court Beoad St. Pamp 2 Peter St. Old Compton St Pamp Pump +
who is credited with determining the number of particles in a mole of particles
The German chemist Amedeo Avogadro is credited with determining the number of particles in a mole of particles.
What is a Mole?
A mole is a unit used in chemistry to measure the amount of a substance. It is defined as the amount of a substance that contains as many elementary entities (atoms, molecules, and ions) as there are atoms in 12 grams of carbon-12. The mole allows chemists to work with the mass of a material, rather than the number of particles, allowing them to calculate the mass of a single molecule or atom.
He is credited with proposing what became known as Avogadro's law, which states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules. This led to the determination of the number of particles in a mole of particles.
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Why is K2SO4 an empirical formula but not Na2C2O4?
The empirical formula of potassium sulphate is K₂SO₄ and Na₂C₂O₄ is not an empirical formula of any compound.
What is empirical formula ?The chemical formula of a compound that gives the proportions (ratios) of the elements present in the compound but not the actual numbers or arrangement of atoms is known as an empirical formula.
In most cases, the empirical formula is used to simply show which elements are present in a molecule. This is useful when you want to know what elements you're dealing with at a glance.
Thus, the empirical formula of potassium sulphate is K₂SO₄ and Na₂C₂O₄ is not an empirical formula of any compound.
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Then explain why they are used to form the words "geosphere," "hydrosphere," and "biosphere."
Answer: hi
The words "geosphere," "hydrosphere," and "biosphere" all use the root "sphere" to refer to different aspects of the Earth. The "geosphere" refers to the solid earth, including the land and rock formations. The "hydrosphere" refers to the Earth's water, including oceans, rivers, and lakes. The "biosphere" refers to the Earth's living organisms and their interactions with each other and the environment. The use of the word "sphere" in these terms refers to the holistic, global nature of these aspects of the Earth and their interactions with one another.
Explanation:
Find the isotopes average atomic mass for the element of iron.
The isotopes average atomic mass for the element of iron is 55.845 u
What is the iron element's typical atomic mass?Atomic mass of iron is 55.845 u.One mole of iron atoms would thus weigh 55.847 grammes since the atomic mass of iron is 55.847 amu.For details on the chemical element of the periodic table known as iron, please visit the Iron element page. An element with the symbol Fe, atomic number 26, and mass 55.85 has a metallic composition.There are three main isotopes of iron: 54Fe, which has an atomic mass of 53.9396 u and an abundance of 5.85%, 56Fe, which has an abundance of 55.9349 u and 91.75%, and 57Fe, which has an abundance of 56.9354 u and 2.12%.To learn more about atomic mass refer to:
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identify the type of nuclear reaction tht aoccurs when an alpha or a beta particle is spontaneously emitted by a radioactive isotope
The type of nuclear reaction tht occurs when an alpha or a beta particle is spontaneously emitted by a radioactive isotope is Nuclear decay (radioactive decay).
When an atom's nucleus is unstable and emits energy spontaneously as radiation, this process is known as nuclear decay. The nucleus eventually transforms into the nucleus of one or more other components. These progeny nuclei are less energetically unstable and have a smaller mass than their parent nucleus.
They are released on their own because the radioactive nucleus wants to stabilize itself. This is accomplished through gamma, beta, or alpha emission. The periodic table's heavier elements exhibit alpha decay. This is due to the fact that they have an excessive number of protons, thus it lets go of a little portion of its nucleus to lessen electrostatic attraction and make it more stable. Quantum tunneling, a phenomena that affects how the alpha particle (i.e., helium nuclei) is emitted, is to blame.
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Predict what must happen when a beaker containing a solution of lithium chloride is heated.
When the lithium chloride solution is heated, we provide the system with the necessary energy, and the result is a lithium chloride solution. Alternatively put, energy will be added to the system.
Furthermore, since the system is getting energy and the dissolving process is essentially an endothermic reaction in which heat is delivered to the system, the system will now be used as an example of an endothermic reaction. Lithium chloride is a chemical compound with the chemical formula LiCl. The salt is a typical ionic compound (with certain covalent properties), but the tiny Li ion exhibits features not shared by other alkali metal chlorides due to its small size.
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What is the type of bond in which electrons are shared unequally?
The type of bond in which electrons are shared unequally is called a polar covalent bond.
In a polar covalent bond, electrons are shared between two atoms, but they are not shared equally. One atom has a greater attraction for the electrons than the other, resulting in an unequal distribution of electrons and a partial positive and partial negative charge on the atoms. This creates a dipole moment or a separation of charge in the molecule.
A polar covalent bond is formed when there is a difference in the electronegativity values of the atoms involved. Electronegativity is a measure of an atom's ability to attract electrons to itself. The greater the difference in electronegativity values, the more polar the bond.
Examples of molecules with polar covalent bond are water (H2O) and Ammonia (NH3).
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Find the number of molecules in 60.0 grams of N₂O.
Answer:
Divide the mass of 60 g by the molecular weight. That gives you the number of moles of NO2. Multiply the number of moles of NO2 by Avogadro's number, which is 6.02 x 1023. That gives you the number of molecules of NO2.
What mass of aluminum is produced by the decomposition of 500. 0g of Al2O3 ?
2Al2O3 → 4Al + 3O2
SHOW WORK PLS
264.6 g of aluminum is produced by the decomposition of 500.0 g of Al2O3
Decomposition reaction refers to those reactions where a compound breaks down(decomposes) into simpler compounds or elements. In this question, we were given the following decomposition reaction :-
2Al2O3 -> 4Al + 3O2
2 moles of Al2O3 will decompose to give 4 moles of Al and 3 moles of O2
According to question, we have 500g of Al2O3
Molar mass of Al = 27g
Molar mass of Al203 = 2(molar mass of Al)+3(molar mass of O) = 2(27)+3(16) = 54+48 = 102 moles
Given weight of Al203 = 500g
Therefore, number of moles of Al2O3 we have with us = given weight / molar weight = 500/102 = 4.9 moles
Now, 2 moles of Al2O3 give us 4 moles of Al
Hence, 1 mole of Al203 gives us 4/2 = 2 moles of Al
So, 4.9 moles of Al2O3 will give us 4.9 x 2 = 9.8 moles of Al.
1 mole of Al = 27g
Hence, 9.8 moles of Aluminum = 9.8 x 27 = 264.6 g
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Select how benzophenone and benzaldehyde can be distinguished using IR only. Only one compound will show absorption at
1720 cm −1
. Only one compound will show absorptions at 1600 and
1650 cm −1
Only one compound will show absorption at
1865 cm −1
. Only one compound will show absorptions at 2820 and
2720 cm −1
They are distinguished because only one compound will show absorptions at 2820 and 2720 cm −1. Option D
What is the IR?We know that the IR is one of the spectroscopic methods that we can be able to use to is identify compounds. The infra red technology is based on the fact that infra red radiation is able to cause the bonds to stretch or to bend.
In the case of the compounds that we have here, there are benzophenone and benzaldehyde. The C=O stretch of the benzophenone at 2820 and 2720 cm −1 are unique and can only be seen in this compound.
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what is the correct composition of a neutral atom of helium-4?
Thee correct composition of a neutral atom of helium-4 is to consists two protons and two neutrons.
Helium-4 is a stable isotope of the element helium. It is by far the most abundant of her two naturally occurring isotopes of helium, accounting for about 99.99986% of the helium on Earth. Its nucleus is the same as an alpha particle, consisting of two protons and two neutrons. The atomic number of helium is 2. The 4 after the element name indicates the mass number of the helium 4 atom, and the neutral atom always has a number equal to the total number of protons and neutrons in its nucleus. Helium 4 atoms without electrons are alpha particles. Alpha particles are emitted from unstable nuclei.
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structural isomers can have drastically different roles in the body. furthermore, only one of multiple optical isomers may be made by the body or be useful as a therapeutic agent. how many structural isomers of c3h6br2 are capable of exhibiting optical activity?
Structural isomers are molecules that have the same chemical formula, but a different arrangement of atoms. These different arrangements can lead to molecules that have vastly different properties, such as different boiling points, melting points, and reactivity. In the case of C3H6Br2, there are two structural isomers: 1,2-dibromoethane and 1,2-dibromopropane.
Optical isomers, also known as enantiomers, are specific types of structural isomers that can rotate plane-polarized light in opposite directions. These enantiomers are mirror images of each other and are non-superimposable.
1,2-dibromoethane has a chiral centre which is an asymmetric carbon atom that can exist as two enantiomers (Mirror images). So, 1,2-dibromoethane is capable of exhibiting optical activity. However, 1,2-dibromopropane does not have a chiral centre and therefore cannot exist as enantiomers and cannot exhibit optical activity.
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Molar mass of HCIO4
The molar mass of HCIO4 is 100.46 g/mol
how are ionic bonds formed compared to covalent bonds?
The ionic bonds are formed by the complete transfer of the electrons between the two atoms. The covalent bond is formed by the sharing of the electrons.
The ionic bond is formed between the two atoms by the complete transfer of the electrons. The ionic bond is formed between the negatively charged atom and the positively charged atom. The compound formed by the ionic bond is called as the ionic compound.
The example of the ionic bond is NaCl. The covalent bond is formed between the two atoms by the sharing of the electrons. The example of the covalent bond is HCl.
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Is H2O2 ionic or covalent?
H2O2 is a covalent compound and not an ionic one.
Why H2O2 has covalent bond?Each dash in the structural formula of hydrogen peroxide,
—H—O—O—H—
represents a single covalent link. In other words, each link consists of two shared electrons, formally with one electron from each atom at its ends. H2O2 is the provided chemical. The Hydrogen and Oxygen atoms are held together by covalent bonding in the molecule. Since the chemical contains neither cations nor anions, ionic bonding is not involved. H2O2 is regarded as a molecular compound or substance since covalent bonding occurs in it. Ionic compounds have a particular type of chemical chemistry called ionic bonding. Consequently, a molecular substance is represented by the formula H2O2.
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Is oxygen and zinc an ionic compound?
Yes oxygen and zinc forms an ionic compound as the are bonded with cation zinc(Zn2+ Z n 2 + ) and anion oxide (O2− .).
What is Zinc?An element of the periodic table with atomic number 30 and the universal symbol Zn, zinc is a chemical element. When the oxidation is removed from the zinc(Zn), zinc transforms into a shiny-greyish metal which is slightly brittle at normal temperature. It is the first element in the periodic table's group 12 of elements.
Zinc has the following Specifications:
Symbol: ZnAtomic number: 30Atomic mass: 65.38 uVan der Waal's radius: 139 pmElectronic configuration: [Ar] 3d¹⁰4s²Electronegativity: 1.65Melting point: 419.5 °CTo know more about Zinc visit
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HELPPP!! INOIC BONDS How will Rb and N come together in an ionic bond? Complete the sentence: For
every 1 atom of N, there will be ______ atom(s) of Rb.
For every 1 atom of N, there will be 37 atom(s) of Rb.
What is meant by atom?
The fundamental building block of matter that makes up a chemical element is an atom. Each atom is made up of a nucleus and one or more electrons that are linked to it.One or more protons and a significant number of neutrons make up the nucleus. Only the most prevalent type of hydrogen is neutron-free.Atoms that are neutral or ionized make up every solid, liquid, gas, and form of plasma. Atoms are incredibly tiny, measuring typically 100 picometers across.Due to quantum effects, they are so small that it is impossible to predict their behavior with sufficient accuracy using classical physics, as would be the case, for example, if they were tennis balls.To learn more about atom refer to
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