Chlorine, bromine and iodine were grouped together in the earliest forms of the periodic table, including the table developed by Mendeleev.
In the earliest forms of the periodic table, Chlorine, Bromine, and Iodine were grouped together because they had a similar chemical and physical properties that reflected their electronic structure. Mendeleev arranged the elements in the order of their atomic weights and recognized that the properties of the elements were periodic functions of their atomic weights. This led to the organization of the table, where elements with similar chemical and physical properties were grouped together in columns, which we call groups or families.Mendeleev was a Russian scientist who developed the Periodic Table of Elements, which is now one of the most crucial reference tools used in chemistry. With the aid of the periodic table, elements are arranged in groups based on their chemical and physical properties. Mendeleev organized the periodic table according to elements with similar properties, such as Chlorine, Bromine, and Iodine, which are all halogens and share similar electron configurations.A halogen is any of the six nonmetallic elements that make up Group 17 (Group VIIa) of the periodic table. The halogens are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). These elements have some similarities, such as their appearance, their high electronegativity, and their ability to form negatively charged ions (anions). Therefore, Chlorine, Bromine and Iodine were grouped together in the earliest forms of the periodic table, including the table developed by Mendeleev.
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what does le chateliter's principle state
For molecules with only one central atom, how many lone pairs on the central atom guarantees molecular polarity?
Answer:
The answer is "1".
Explanation:
It is the lone pairs at, which the central atom provides the molecular and the polarity. It is only for substances with just a central atom, for which the molecules with only one central atom and only one of the solitary paired were required, that's why in this question the "1" is the correct answer.
What is the structural difference between saturated, monounsaturated, polyunsaturated, and trans fats?.
Saturated fats are solids at room temperature, while monounsaturated and polyunsaturated fats are liquids. Trans fats are artificially made, and all four types have different chemical structures.
Saturated fats, as the name suggests, have all the possible hydrogen atoms attached to the carbon atoms of the fatty acid chains, which makes them straight, which causes them to pack together tightly, forming a solid structure at room temperature. Monounsaturated fats, on the other hand, have one double bond in the carbon chain, which causes a kink or bend, making it more difficult for the fatty acid chains to pack tightly together, resulting in a liquid at room temperature.
Polyunsaturated fats, which contain more than one double bond, are similarly kinked, making them even more challenging to pack together and therefore liquid at room temperature. Trans fats are artificially produced by adding hydrogen to polyunsaturated fats, changing their chemical structure, making them straight and solid at room temperature, and making them more stable in processed foods. Fatty acids are the building blocks of fats, and differences in their structure have significant consequences for their function in the body.
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Review Questions
O
Esime
After 5 minutes, what
do you expect will
happen to the
temperature of the ice
and water?
Answer
Answer:
el río esta libertad haora
Explanation:
owk7uuur98
88388811111q1
Which of the following elements is the most chemically reactive?
a. hydrogen
b. helium
c. neon
d. argon
e. They all have the same chemical reactivity
Hydrogen is the most chemically reactive element among the options provided. This is because hydrogen has only one electron in its outermost shell, making it highly susceptible to gaining or losing electrons to achieve a stable electron configuration. The correct answer is a. hydrogen.
Hydrogen readily reacts with other elements to form compounds, such as with oxygen to form water or with chlorine to form hydrogen chloride.
In contrast, helium, neon, and argon belong to the noble gas group, which have full electron shells and are known for their low reactivity. Noble gases have stable electron configurations and do not readily gain, lose, or share electrons with other elements, making them chemically inert.
Therefore, among the given elements, hydrogen stands out as the most chemically reactive due to its tendency to form compounds through electron transfer or sharing. The correct answer is a. hydrogen.
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The process of erosion or landscape is an example of positive feedback. Can you describe a Feedback group that explains this process in more detail, starting with a feedback between plant, humus, and at least one more node in the network? hint: you will need to add more than one negative feedback
Answer:
The feedback mostly on the scenario mentioned is defined downwards.
Explanation:
There seem to be forces that regulate the whole mechanism as well as preserve equilibrium in every natural cycle. It is possible to divide these variables into two simple types:
Negative PositiveThe improvement throughout the natural state is attempted by negative factors as well as the positive reinforcement attempts to mitigate this improvement and approach the problem to something like the primary comfortable position.
Throughout the present situation, erosion seems to be a constructive response throughout the landform transition scenario. This additional elevation is neutralized either by the extrusion process because as landmass becomes lifted by another process. Currently, due to the extreme interplay of several other variables, this shift in landscape height can start happening. The increased height including its landform may be caused by structural elongation of both the rock body. Another mechanism that will act to improve height becomes isostatic equilibrium.So, throughout the context of landform transition, there are several forms of negative comments. The quantity of surface accessible at this site also improves as even the landmass becomes increased. As a consequence, this additional area will be filled by new occupants. Plants as well as other species may be in certain habitats. Whenever these organisms inhabit the location, the organic chemistry created by them often induces biological weathering including its rock. This again serves as a force for the shift in the landform. This excessive precipitation induces some significant erosion at either site. Finally, this reduces the elevation including its landmass and preserves the landform's primary stabilization thereby concludes the circle.Let's take a basic example including its process for suggestions. Users start whimpering if you get too cold. Your body continues to pump additional blood attributable to the whole shivering and indeed the temperature therefore raises. Throughout this circumstance, the temperature drop is a mechanism that serves to initiate the shivering, as well as the shivering attempts to recover the steady body’s temperature. Therefore the shivering case seems to be positive feedback that seeks to restore the primary balance.
Much the same for the landmass uplifting allows the emergence of more life above it. So, social advancement seems to be a system of negative criticism that disturbs the equilibrium. After that, the main elevation of the landform needs to regain the excess volume of degradation. So, this is indeed a tool for constructive feedback.
Which of the following is NOT a chemical group commonly found on core histone N-terminal tails for chromatin regulation?
a. methyl
b. sulfhydryl
c. phosphoryl
d. acetyl
The correct answer is option b.
b. Sulfhydryl is NOT a chemical group commonly found on core histone N-terminal tails for chromatin regulation.
The core histone N-terminal tails of chromatin are highly charged because they are rich in lysine and arginine residues. These tails are chemically modified by several enzymatic activities that add or remove functional groups such as acetyl, methyl, ubiquitin, and phosphate groups.
This chemical modification alters the local chromatin structure and creates a dynamic regulatory system for gene expression by allowing or preventing DNA-protein interactions.
Sulfhydryl groups, which contain a thiol (-SH) functional group, are not commonly found on histones and are not known to play a major role in chromatin regulation. However, they can play a role in protein structure and function, as they can form disulfide bonds with other sulfhydryl groups or react with other functional groups to modify protein activity.
Therefore correct answer is option b. sulfhydryl.
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Which type of bond will form between two chlorine atoms?
Question:
Which type of bond will form between two chlorine atoms?
The Chlorine Atom:
Cl is the symbol for chlorine. Its' atomic number is 17 due to having 17 protons electrons surrounding the nucleus. Cl also has 17 electrons and 18 neutrons. It was discovered in 1774 by Claude Scheele and named for the Greek word khloros, meaning green. Chlorine is a yellowish-green gas at room temperature.
A covalent bond will be formed between two chlorine atoms.
Chlorine, represented by the symbol "Cl" is present in the 17th group and third period of the periodic table, having atomic number 17. It has 17 electrons, 17 protons and 18 neutrons. It belongs to the halogen family with seven valence electrons. The other elements of this group are Fluorine(F), Bromine(Br) and Iodine(I).
The elements of this group has the tendency to gain one electron in its outermost shell in order to attain stability of the nearest noble gas configuration.
The electronic configuration of chlorine is 2,8,7 . So, two chlorine atoms will share their valence electrons to complete their octet . The bond formed by sharing of electrons is known as a covalent bond. It is a strong bond formed when two atoms of the same element combine together.
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______Is analyzed by qualitative methods
A. The identify of the poison used in a murder.
B. The amount of poison used in a murder.
C. The location of the poison used in a murder.
D. The method used by the suspect to kill the person.
Answer:
A. The identify of the poison used in a murder.
Explanation:
Balance the following chemical equation by providing the correct coefficients:
[ ]HBr + [ ]Ba(OH)2 -> [ ]BaBr2 + [ ]H20
Answer:
2HBr + Ba(OH)2 → BaBr2 + 2H2O
Explanation:
Hydrogen Bromide + Barium Hydroxide = Barium Bromide + Water
The balanced chemical equation with the correct coefficients is 2HBr + Ba(OH)₂ → BaBr₂ + 2H₂O.
First balancing the barium (Ba) atoms first. There is one barium atom on the left side and one on the right side, so no coefficients are needed for barium.
HBr + Ba(OH)₂ → BaBr₂ + H₂O
There is one hydrogen atom on the left side and two hydrogen atoms on the right side. To balance the hydrogen, place a coefficient of 2 in front of HBr:
2HBr + Ba(OH)₂ → BaBr₂ + H₂O
There are two bromine atoms on the left side and two bromine atoms on the right side, so they are already balanced.
2HBr + Ba(OH)₂ → BaBr₂ + H₂O
There is one barium atom on the left side and one barium atom on the right side, so they are already balanced.
Balance the oxygen (O) atoms. There are two oxygen atoms on the left side and only one on the right side. To balance the oxygen, place a coefficient of 2 in front of H₂O.
2HBr + Ba(OH)₂ → BaBr₂ + 2H₂O
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Write the balanced equation for the ionization of the weak base pyridine, c5h5n , in water, h2o.
The equation for the ionization of the weak base pyridine in water is:
C5H5N + H2O ⇌ C5H5NH+ + OH-
Explanation:
Pyridine is a weak base, so it will react with water to create hydroxide (OH-) ions, along with the conjugate acid of pyridine, which is called pyridinium ion (C5H5NH+). The overall equation for the reaction can be written as:C5H5N + H2O ⇌ C5H5NH+ + OH-In this equation, the arrows indicate that the reaction is reversible, meaning that the products can also react to form the reactants. Therefore, the concentration of each species in the reaction mixture will be related by an equilibrium constant (K).
The balanced equation for the ionization of the weak base pyridine in water is C5H5N + H2O ⇌ C5H5NH+ + OH-.
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Realice una historieta que resuma su comprensión acerca de la teoría atómica y los diferentes modelos atomicos que se
han propuesto a lo largo de la historia.
Respuesta:
Los modelo atómicos han permitido representar el modo de funcionamiento de los átomos. A lo largo de la historia han surgido un numero de modelos atómicos diferentes incluyendo los modelos de Bohr, Thomson, Rutherford, Sommerfeld, Dalton y Schrödinger.
Explicación:
El modelo atómico propuesto por John Dalton (1808) demostró que las sustancias químicas reaccionan en proporciones fijas y cómo mediante su combinación se producen elementos diferentes. Dalton fue el primero en postular la existencia de elementos indivisibles llamados átomos. A continuación, Thomson (1904) desarrolló un modelo en el cual el átomo estaba compuesto por protones con carga positiva y electrones con carga negativa los cuales se incrustaban uniformemente dentro de este átomo, asemejándose a las pasas de uva de un budín. En 1911, Ernest Rutherford desarrolló un nuevo modelo donde la masa principal del átomo tenía carga positiva y se localizaban en el núcleo, mientras que los electrones con carga negativa se posicionaban en la región externa del átomo. Subsecuentemente, Niels Bohr (1913) represento el funcionamiento del átomo de hidrógeno mediante un protón inmóvil en el núcleo atómico y un electrón girando a su alrededor. El modelo atómico de Sommerfeld permitió generalizar el diagrama de Bohr a otros tipos de átomos mas allá del Hidrógeno, incluyendo diferentes niveles energéticos para cada átomo particular. El modelo de Schrödinger (1926) permitió corregir aquellas discordancias surgidas del modelo atómico de Bohr. Schrödinger incluyó diferentes niveles y subniveles de energía a los electrones e incorporó órbitas elípticas a su movimiento, con lo cual permitiendo predecir los efectos relativos de los campos magnético y eléctrico sobre el movimiento de los electrones.
1. how many unpaired electrons are in the boron atom?
this atom is ... a. paramagnetic ... b. diamagnetic ....
2. How many unpaired electrons are in the iron atom? This atom is ...
A. Paramagnetic...
B. Diamagnetic...
1) The boron atom has only one unpaired electron, making it paramagnetic.
2) Boron atom has one unpaired electron, making it paramagnetic.Iron atom has four unpaired electrons, making it paramagnetic.
1. Boron atom and unpaired electrons Boron is a chemical element with the symbol B and atomic number 5. It is a trivalent metalloid and has three valence electrons. The electron configuration of boron is 1s² 2s² 2p¹. Therefore, the boron atom has only one unpaired electron, making it paramagnetic.2. Iron atom and unpaired electronsIron is a chemical element with the symbol Fe and atomic number 26. It is a metal and has two valence electrons. The electron configuration of iron is [Ar] 3d⁶ 4s². Therefore, the iron atom has four unpaired electrons, making it paramagnetic. Answer:Boron atom has one unpaired electron, making it paramagnetic.Iron atom has four unpaired electrons, making it paramagnetic.
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A FeCl 3 solution is 0.175 M. How many mL of a 0.175 M FeCl 3 solution are needed to make 650. mL of a solution that is 0.300 M in Cl - ion?
Based on the molar concentration, the volume of FeCl₃ required is 371 mL
What is the mole ratio of the reaction?The mole ratio of the reaction is determined from the equation of the reaction as follows:
Equation of reaction: FeCl₃ (aq) ----> Fe³⁺ (aq) + 3 Cl⁻ (aq)
From the equation of reaction, the mole ratio of FeCl₃ to Cl⁻ is 1 : 3
The moles of chloride ions in 650 mL of 0.300 M is calculated from the formula below:
Moles = molar concentration * volume in litersMoles of Cl⁻ ions = 0.300 * 650/100
Moles of Cl⁻ ions = 0.195
Moles of FeCl₃ required = 0.195/3
Moles of FeCl₃required = 0.065
volume of FeCl₃ required = 0.065 / 0.175
volume of FeCl₃ required = 0.371 L or 371 mL
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What is the maximum mass of AgCl that can precipitate if 342 g of AgNO3 is mixed with 154 g NaCl? Refer to the periodic table. Choose the correct answer.
A) 188 g
B) 289 g
C) 356 g
D) 378 g
The correct answer is D) 378 g.The molar mass of AgCl (silver chloride) is 143.32 g/mol (Ag: 107.87 g/mol, Cl: 35.45 g/mol). Since the stoichiometric ratio is 1:1
To determine the maximum mass of AgCl that can precipitate, we need to identify the limiting reactant in the reaction between AgNO3 and NaCl. The reactant that is completely consumed in the reaction will determine the amount of product that can be formed.
Let's calculate the moles of each reactant:
Molar mass of AgNO3 (silver nitrate) = 107.87 g/mol (Ag: 107.87 g/mol, N: 14.01 g/mol, O: 16.00 g/mol)
Molar mass of NaCl (sodium chloride) = 58.44 g/mol (Na: 22.99 g/mol, Cl: 35.45 g/mol)
Moles of AgNO3 = mass / molar mass = 342 g / 107.87 g/mol ≈ 3.17 mol
Moles of NaCl = mass / molar mass = 154 g / 58.44 g/mol ≈ 2.64 mol
From the balanced chemical equation for the reaction:
AgNO3 + NaCl -> AgCl + NaNO3
We can see that 1 mole of AgNO3 reacts with 1 mole of NaCl to produce 1 mole of AgCl. Therefore, the stoichiometric ratio between AgNO3 and AgCl is 1:1.
Comparing the moles of AgNO3 and NaCl, we can see that NaCl is the limiting reactant because it has fewer moles than AgNO3. This means that all of the NaCl will react, and any excess AgNO3 will remain unreacted.
The molar mass of AgCl (silver chloride) is 143.32 g/mol (Ag: 107.87 g/mol, Cl: 35.45 g/mol). Since the stoichiometric ratio is 1:1 between AgNO3 and AgCl, the maximum mass of AgCl that can precipitate is:
Mass of AgCl = moles of NaCl x molar mass of AgCl
Mass of AgCl = 2.64 mol x 143.32 g/mol ≈ 378 g
Therefore, the correct answer is D) 378 g.
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What are pros and cons of hydrogen fuel cells?
Answer:
Pros: No vehicle emissions other than water vapor. Fuel economy equivalent to about twice that of gasoline vehicles. Hydrogen is abundant, and can be made from renewable energy. Cons: This space-age technology is expensive.
Answer:
The pros of hydrogen fuel cells are that they are very efficient, producing very little waste. They are also very stable, which makes them safe to use.
The cons of hydrogen fuel cells are that they can be expensive to produce and maintain, and they require a lot of energy to power them, meaning that they often aren't as efficient as they could be.
Despite these pros and cons, hydrogen fuel cells are still a very promising technology. With more research, attention, and development, they could be a powerful force in the fight against carbon emissions and global warming.
A pycnometer is a glass apparatus used for accurately determining the density of a liquid. When dry and empty, a certain pycnometer had a mass of 27.144 g. When filled with distilled water at 25.0°C, it weighed 36.377 g. When filled with chloroform (a liquid once used as an anesthetic before its toxic properties were known), the apparatus weighed 40.821 g. At 25.0°C, the density of water is 0.99704 g/mL
(a) What is the volume of the pycnometer?
The volume of pycnometer is 20.409 ml.
How is the volume of pycnometer determined?Volume of pycnometer is determined by using the general formula of density which is,
density=mass/volume
Considering the data given, mass of pycnometer =27.144 g
According to the standards , density of pycnometer at 25°C=1.33g/cm³
Substituting the values in the formula,
volume=mass /density=27.144/1.33=20.409 cm³
Pycnometer is an instrument which is used to measure the relative density of liquids and solids.The density of liquids is determined by using relative density and for solids the density is determined by weighing them.
It is based on Boyle's law which helps in determination of pressure-volume relationship. There are 2 types of this instrument ,one that which works on a basis of gas expansion and the other one which works on the basis of variable volume.
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What is the pH of a solution with a [H3O+] concentration of 3.4 x 10-¹¹ M?
The pH of the solution will be 10.47.
what is pH?The pH of a solution is mathematically given as:
pH = - log [\(H^+\)] of -log [\(H_3O^+\)]
Thus, in this case, with [\(H_3O^+\)] of 3.4 x 10-¹¹ M:
pH = -log 3.4 x \(10^-^1^1\) = 10.47
Thus, the pH of the solution will be 10.47.
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MAJOR AMOUNT OF POINTS
What is the chemical formula of wood?
Answer:
C₆H₁₀O₅
Explanation:
In chemistry, we denote any molecule with carbons, hydrogens, and other elements combined together as organic compounds. This is where get get "Organic Chemistry" from.
Wood is going to be an organic compound.
Answer:
C₆H₁₀O₅
Explanation:
Identifies at least one organism
that goes through photosynthesis
or respiration
What are the two limitations of earth plates
Answer:
The tectonic style and viability of modern plate tectonics in the early Earth is still debated. Field observations and theoretical arguments both in favor and against the uniformitarian view of plate tectonics back until the Archean continue to accumulate. Here, we present the first numerical modeling results that address for a hotter Earth the viability of subduction, one of the main requirements for plate tectonics. A hotter mantle has mainly two effects: 1) viscosity is lower, and 2) more melt is produced, which in a plate tectonic setting will lead to a thicker oceanic crust and harzburgite layer. Although compositional buoyancy resulting from these thick crust and harzburgite might be a serious limitation for subduction initiation, our modeling results show that eclogitization significantly relaxes this limitation for a developed, ongoing subduction process. Furthermore, the lower viscosity leads to more frequent slab breakoff, and sometimes to crustal separation from the mantle lithosphere. Unlike earlier propositions, not compositional buoyancy considerations, but this lithospheric weakness could be the principle limitation to the viability of plate tectonics in a hotter Earth. These results suggest a new explanation for the absence of ultrahigh-pressure metamorphism (UHPM) and blueschists in most of the Precambrian: early slabs were not too buoyant, but too weak to provide a mechanism for UHPM and exhumation.
Explanation:
What is the electronegativity periodic table?
The electronegativity periodic table is a chart that arranges elements according to their electronegativity, which is a measure of an atom's ability to attract electrons to itself. Electronegativity is a chemical property that reflects the relative tendency of an atom to draw electrons towards itself when it forms a chemical bond with another atom.
The electronegativity values are usually determined using the Pauling scale, which was developed by Linus Pauling and is widely used in chemistry. In this scale, the electronegativity of an element ranges from 0.7 for cesium to 4.0 for fluorine, with increasing electronegativity moving from left to right across a period and increasing as one moves down a group.
The electronegativity values can be useful in understanding chemical bonding and the behavior of molecules. For example, elements with high electronegativity values tend to form ionic bonds, while elements with low electronegativity values tend to form covalent bonds. Additionally, the electronegativity difference between two bonded atoms determines the type of bond, with larger differences indicating polar covalent bonds and smaller differences indicating nonpolar covalent bonds.
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What’s a new discovery that makes it easier to use biomass as an energy source?
Answer:
Biomass to an Energy source
Explanation:
Researchers have developed a new catalyst that directly converts cellulose, the most common form of biomass, into ethylene glycol, an important intermediate product for chemical industry. Alternatives to fossil fuels and natural gas as carbon sources and fuel are in demand.
Answer:
scientists disoverd a new catalyst
Explanation:
sry i am new just wanted to try it out XD
Why is an element's atomic mass in a decimal form on the Periodic Table?
Answer:
because it is an average of various isotopes of the element
Explanation:
glad to help
A bauxite mining company has got government permission to acquire agricultural land in a location to start surface mining activities. Which of these is the best plan to solve the problem of permanent dislocation of farmers due to mining in the location?
Answer:
make reclamation compulsory after bauxite has been removed
Explanation:
Available options:
choose other infertile and uninhabited locations for bauxite mining
allow agriculture and mining to take place simultaneously in the location
ask farmers in the location to help in mining bauxite
make reclamation compulsory after bauxite has been removed
The correct option and the best plan to solve the problem of permanent dislocation of farmers would be to make reclamation compulsory after the bauxite has been removed.
Reclamation would involve restoring the agricultural land back to its original status prior to the commencement of bauxite mining. By doing this, the farmers can return to their farmland after being temporarily displaced due to the mining activities.
answer is b
please mark brainliest
Which product would form upon heating of the compound shown below? OH HCI Heat OH OH OH
The balanced equation for the reaction is: HCl + H₂O → HF + 2H₂O
The compound shown below is a mixture of hydrogen chloride (HCl) and hydroxide ions (OH-).
HCl + H₂O → HF + HOH
When this mixture is heated, the hydrogen chloride will dissociate into hydrogen gas (H₂) and hydrogen ions (H+), while the hydroxide ions will combine with the hydrogen ions to form water (H₂O).
Therefore, the product that would form upon heating of the compound shown below is water (H₂O).
HCl + H₂O → HF + HOH
H₂O + 2H+ + 2e- → H₃O+ + 2H₂O
The balanced equation for the reaction is:
HCl + H₂O → HF + 2H₂O
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the strength of dipole interactions are mostly determined by what?
The strength of dipole interactions is mostly determined by the difference in electronegativity between atoms in a molecule.
Dipole interactions occur between polar molecules, which have a separation of electric charge resulting from a difference in electronegativity between the atoms that make up the molecule. Electronegativity is a measure of how strongly an atom attracts electrons towards itself in a covalent bond.
The greater the difference in electronegativity between the atoms in a molecule, the larger the dipole moment and the stronger the dipole-dipole interactions. This is because the partial positive and negative charges in a polar molecule are more pronounced when the electronegativity difference is higher, which leads to stronger attractions between the molecules.
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so no one go help me wit my chemistry huh
Answer:
depends...
on how difficult it is
Question 5 of 32What is the formula for strontium oxide?
ANSWER
The formula of strontium oxide is SrO
EXPLANATION
Strontium oxide is formed when strontium reacts with oxygen
Below is the reaction between strontium and oxygen
\(\text{ Sr}_{(s)}\text{ }+\text{ }\frac{1}{2}O_{2(g)}\text{ }\rightarrow\text{ SrO}\)Hence, the formula of strontium oxide is SrO
OSTOICHIOMETRY
Using molarity to find solute moles and solution volume
A chemist adds 440.0 mL of a 1.46M barium acetate
added to the flask. Round your answer to 3 significant digits.
mol
be (Ba(C₂H₂O₂),) solution to a reaction flask, Calculate the millimoles of barium acetate the chemist has
X
Calculator
542400
Maribel V
do
The chemist has 642.4 millimoles of barium acetate in the solution.
To calculate the millimoles of barium acetate (Ba(C₂H₃O₂)₂) in the solution, we can use the formula:
moles = molarity × volume (in liters)
First, let's convert the volume from milliliters (mL) to liters (L):
440.0 mL ÷ 1000 = 0.440 L
Now we can substitute the given values into the formula:
moles = 1.46 M × 0.440 L
moles = 0.6424 mol (rounded to 4 decimal places)
To convert the moles to millimoles, we multiply by 1000:
millimoles = 0.6424 mol × 1000
millimoles = 642.4 mmol (rounded to 3 significant digits)
Therefore, the chemist has 642.4 millimoles of barium acetate in the solution.
It's important to note that the molarity (M) represents the number of moles of solute per liter of solution. By multiplying the molarity by the volume in liters, we can find the number of moles of solute. To convert moles to millimoles, we multiply by 1000. The result represents the millimoles of barium acetate present in the given volume of solution.
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