The empirical formula of hydroxylamine is Nitrogen 1, Hydrogen 3 and oxygen 1 (N1H3O1).
To find the empirical formula, we must first figure out the amount of oxygen present, which is equal to 100 minus the percentages of nitrogen and hydrogen present. Combining the values gives us the following outcome: The amount of oxygen present is expressed as 100 minus 42.41 and 9.15, which equals 48.44. Nitrogen is 42.41, contains 9.15 percent hydrogen, and has 48.44 percent oxygen. The smallest amount will be shared. When divided by 3.0275 and 3.0229, respectively, the least nitrogen value will equal nearly 1, which is nitrogen. 9.15 divided by 3.0275 = 3, and 3.0275 divided by 3.0275 equals 1 for oxygen and hydrogen. The nitrogen concentration in this instance is 1. 3. 1 points are needed to compare hydrogen to oxygen.
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Bond length. Need help solving with explanation I can understand please
The bond length or separation between the two nuclei of X in a molecule of X2A with elemental bond length of 2.22A and 4.28A is 6.5A.
What is bond length?
The bond length or bond distance can be defined as the average distance between the nuclei of the bonded atoms in the given molecule. If it is a polyatomic molecule the bond distance can be calculated by adding the atomic radius of all the atoms involved in bonding.
The separation or bond length of the molecule X2A can be calculated as,
The bond length of elemental A = 2.22A
The atomic radius of A = 2.22 / 2 = 1.11A
The bond of elemental X = 4.28A
The atomic radius of X = 4.28 / 2 = 2.14A
The bond length of molecule X2A = (2.14 + 1.11) x 2 = 6.5A.
Therefore, the bond length or separation between the atoms X in the given molecule is 6.5A.
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a solution is prepared by dissolving 15.5 g of naoh in 1.50 l of solution. what is the molarity of this solution?
The molarity of a solution that is prepared by dissolving 15.5 g of NaOH in 1.50 L of solution is
How is molarity of solution calculated?The given values are,
volume = 1.50 L
weight of NaOH = 15.5 g
Mass NaOH= 40 g/mol
Therefore, moles of NaOH is = weight / mass
= 15.5 / 40
= 0.3875
We know,
Molarity= moles of NaOH / volume
= 0.3875 / 1.50
= 0.25833 M NaOH
Therefore, we get the molarity of this solution as 0.25833 M NaOH
What is molarity of a solution?Molarity is defined as the number of moles of solute dissolved in one liter of solution. Also called molarity and represented by the letter "M". Molarity formula M = n/v where M is the molarity n is the number of moles v is the total volume of the solution in liters.
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atoms from which of the following pairs are most likely to form an ionic bond? a) carbon and oxygen b) silicon and oxygen c) sodium and oxygen d) sulfur and oxygen
Atom pairs that are most likely to form an ionic bond is sodium and oxygen.
Thus, the correct option is C.
What is an ionic bond?А pаir of elements will most likely form аn ionic bond if one is а metаl аnd one is а nonmetаl. These types of ionic compounds аre composed of monаtomic cаtions аnd аnions. We cаn check the periodic tаble to see thаt the cаtions аre monаtomic ions formed from metаls, аnd the аnions аre monаtomic ions formed from nonmetаls.
Sodium is a metal, and oxygen is a nonmetal; therefore, [tex]N_{2} O[/tex] is expected to be ionic.
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what is the component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route?
The component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route is option 3 Starches.
A colloid is an aggregate wherein one substance inclusive of microscopically dispersed insoluble debris is suspended throughout another substance. some definitions specify that the debris needs to be dispersed in a liquid, even as others expand the definition to encompass substances like aerosols and gels.
Colloids and crystalloids are two types of solutions used to replace lost blood fluid (plasma). They encompass blood and artificial products. each colloid and crystalloids seem like in addition powerful at resuscitation. There are one-of-a-kind varieties of colloids and those may have exceptional consequences.
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Disclaimer:- your question is incomplete, please see below for the complete question.
what is the component of colloid solutions that is helpful in managing hypovolemic shock through the intravenous route?
1. Salts
2. Sugars
3. Starches
4. Minerals
which fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen?
Fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen is coal.
Coal can be made to burn cleaner and reduce the carbon dioxide it it will combine with the purified oxygen. coal is type of fossil fuel. coal is black in color or brownish black. the fossil fuel coal is made up of plant. the plant gets their energy from the sunlight so, it is clear that col is from sun. fossil fuels are non renewable source of energy.
Thus, Fossil fuel can be made to burn cleaner and reduce carbon dioxide emissions if it is combined with purified oxygen is coal.
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when an ionic compound is added to water, the will be attracted to the partially positive h atom of water and the will be attracted to the partially negative o atom of water. as the compound dissolves the ions separate from each other, a process called .
The process by which the ions are attracted to water and separate from each other when dissolved in water is called dissociation.
What is dissociation of ions in water?
The ionic salts when added to water dissolve in water by dissociation. The ions in the ionic compound break the bond between them and get dissolved in water. Water molecules reduce the electrostatic force between the ions and solvate them by surrounding them.
The positive ions of the ionic compound gets attracted to hydroxide ion of water which is negatively charged. The positive ion of the ionic compound gets attracted to protons in water which are positively charged. the ions in ionic compound dissolve by dissociation.
Therefore, due to dissociation the ionic compound dissolves in water and get attracted to opposite charges in water.
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sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. how much hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate?
781 g of hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate.
To find out how much hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate, we need to know the number of moles of HCl present, then multiply that by the molar mass of NaHCO3.
First, we calculate the number of moles of HCl present by solving for x:
x = Moles x 0.1 mol/L
= (Moles)(0.1 mol/L)(1000 mL)
= 100 mmol
Next, we multiply this number by the molar mass of NaHCO3:
=(84.007 g/mol)x(78.129 g/mol)
= 7.8129 x 100 mmol
= 781 g
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two unknown mineral samples, a and b, are rubbed against each other. mineral a scratches mineral b. what can you infer about the minerals?
Mineral A scratches mineral B, we can infer from here that Mineral A is more harder than Mineral B.
The minerals are the naturally occurring chemical compounds which are found in the earth's layers. Minerals have different properties.
If mineral A is rubbed against mineral B and Mineral A scratches mineral B, we can infer from here that the mineral A is harder than mineral B.
The hardness of the minerals is because of the intermolecular forces between the particles of the minerals. The mineral A might be having strong intermolecular forces in comparison with the mineral B.
This is why when rubbed against each other, the mineral A scratches the particle of the mineral B which has lower intermolecular forces between the particle of the mineral B.
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Complete question - Two unknown mineral samples, A and B, are rubbed against each other. Mineral A scratches mineral B. What can you infer about the minerals?
O Mineral A is harder than mineral B.
O Mineral B is harder than mineral A.
O Mineral A is more dense than mineral B
Mineral B is denser than mineral A.
Which property would cesium most likely have?
It is hard.
It is ductile.
It is a gas.
It has low reactivity.
Answer:
It is ductile.
Explanation:
Cesium belongs to group 1 on the periodic table, meaning it is an alkali metal, not a gas. Alkali metals are soft, malleable, and ductile. They are good conductors of heat and highly reactive in nature, meaning cesium is also highly reactive. Therefore, the only option that would make sense is "It is ductile."
three atoms have the following ground state electron configurations. which statement regarding the atoms is true? atom 1: 1s22s22p63s23p2 atom 2: 1s22s22p63s23p5 atom 3: 1s22s22p63s23p64s1 group of answer choices g
Answer:
atom1:1s22s22p63s23p2
hydroxide ion is a stronger nucleophile than either water or ethanol, yet the addition of koh during the kinetic runs in this experiment has virtually no effect on the reaction rates. explain.
catalytic process, A Ni catalyst is required for amide and alcohol to make the right esters. hydroxide ion is a stronger nucleophile than either water or ethanol,
In general, catalytic activity is a chemical interaction between a catalyst and a reactant that yields chemical intermediates more readily able to react with one another or with another reactant to yield the desired end product. Catalysis is the process of accelerating a chemical reaction by adding a catalyst to it. Catalysts are unaffected by and are not destroyed by the reaction.
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assume that you have produced the amount of 2-methylbenzoic acid from the previous question. what volume, in ml, of 6m naoh would you need to fully deprotonate the 2-methylbenzoic acid?
If we assume that you have produced the required amount of 2-methylbenzoic acid, then we would require 4.2 ml of 6m NaOH to completely deprotonate the 2-methylbenzoic acid.
Benzoic acid is more acidic than 2-methylbenzoic acid. because the +R (electron donating) nature of the methyl group causes the negative charge on the oxygen atom to become destabilized when the latter ions form 2 methyl benzoate ion. Consequently, it wouldn't have a propensity to emit H+.
An inorganic substance having the formula NaOH is sodium hydroxide, sometimes referred to as lye and caustic soda. Sodium cations and hydroxide anions make up this white solid ionic combination.
volume of 6 m NaOH = 6 1.8 = 4.2 ml.
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How would switching to solar power affect a city environment?
The ability of solar energy to lower greenhouse gas emissions is the first and possibly most well-known advantage of this technology. This occurs as a result of solar energy as a coal energy substitute (the production of which harms the environment). Solar energy generation and consumption don't contribute to air pollution or the release of greenhouse gases.
As a result, making the simple effort to get in touch with local solar providers and switching to sustainable energy can have a significant long-term benefit.
Overall, switching to renewable energy will enable you to achieve your goals for sustainable living while also saving money. For instance, using solar energy lowers greenhouse gas emissions. Additionally, it prevents stress on the ecosystem and the world's water supply.
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calculate the temperature (in k) at which 0.0938 mol of o2 has a pressure of 740 torr in a 1.0l container.
The temperature (in k) will be 126.509 K
Number of moles of Oxygen = 0.0938 mol
Pressure = 740 torr or 98658.6 Pa
Volume = 1.0 L or 0.001 m3
Temperature in K = ?
To find out the temperature (T) we use the ideal gas equation
PV = nRT
As we have to find the temperature so rearrange the equation for T
T = PV / nR
value of R = 8.314 J/mol.K
Put the values in the equation
V = 98658.6 * 0.001 / 0.0938 * 8.314
V = 0.000974 / 0.779853
V = 98.6596 / 0.779853
V = 126.509 K
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what is the concentration of hydroxide ions after 50.0 ml of 0.250 m naoh is added to 120 ml of 0.200 m na2so4? please show all work.
The concentration of the hydroxide ions after 50 ml of 0.250M NaOH is added to 120ml of 0.200M Na2SO4 is 7.35 x 10^-2 M.
What is meant by concentration?
Concentration is the total amount of solute present in the given volume of solution. this is expressed in terms of molarity, molality, mole fraction, normality etc. The term concentration mostly refers to the solvents and solutes present in the solution.
Concentration of hydroxide ions can be calculated by,
M (OH^-) = V (NaOH) x M (NaOH) / V (total) = 50ml x 0.250M / 50ml + 120ml = 0.0735M = 7.35 x 10^-2 M.
where M (OH^-) = concentration of hydroxide ions, V(NaOH) = volume of NaOH, M(NaOH) = concentration of NaOH.
Therefore, the concentration of the hydroxide ions after 50 ml of 0.250M NaOH is added to 120ml of 0.200M Na2SO4 is 7.35 x 10^-2 M.
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d. very polar compounds are sometimes purified by reverse phase chromatography where the stationary phase is very non-polar while the solvent is very polar. why would this technique be beneficial with extremely polar compounds?
very polar compounds are sometimes purified by reverse phase chromatography where the stationary phase is very non-polar while the solvent is very polar. this technique be beneficial with extremely polar compounds as it provides better solubility for the polar analytes.
The chromatography is the best technique to purified the organic compounds. if the stationary phase is polar it takes more times for polar molecule to absorbed in stationary phase. that's why we use reverse chromatography for the purified more polar compound.
Thus, very polar compounds are sometimes purified by reverse phase chromatography where the stationary phase is very non-polar while the solvent is very polar. this technique be beneficial with extremely polar compounds as it provides better solubility for the polar analytes.
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How many moles in 3.22 g of aluminum chloride?
3.22 g containing aluminum chloride contains 0.0241486951 moles, making 1 mole of an element's atoms weigh the same as its atomic mass in grams.
Why would one use aluminum chloride?Rubber, lubricants, wood preservers, and paints are all made in large part using aluminum chloride. In both medications and pesticides, it is utilized. while melting aluminum, as a flux Antiperspirant is how you apply it.
For what purpose does deodorant contain aluminum chloride?Cosmetic and pharmaceutical goods frequently contain aluminum compounds. The components that stop sweating in antiperspirants are aluminum salts. To prevent sweat from collecting on your pores' surface, the salts must dissolve.
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describe the bohr model for the atom and explain how it accounted for the emission spectra of atoms.
The Bohr model for the atom explains how electrons chenges different energy levels and accounted for the emission spectra of atoms.
The Bohr model postulates that electrons orbit the nucleus at constant electricity ranges. Orbits in addition to the nucleus exist at better electricity degrees. While electrons go back to a decreased strength level, they emit energy in the shape of light.
Bohr's model shows that the atomic spectra of atoms are produced via electrons gaining energy from a few supplies, leaping as much as a better electricity degree, then without delay losing returning to a lower strength stage and emitting the strength difference among the 2 power ranges.
Bohr explained the steadiness of atoms by using presenting that electrons revolve across the nucleus inside the exact circular paths having fixed strength and while transferring in the same orbit they do now not lose or benefit from strength.
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I WILL GIVE BRAINLY PLS HELP
Answer:
Ice wedging
Explanation:
The rocks crack fill with water and then expand
what level of measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics?
Quantitative measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics.
In this measurement the numbers are counted that thus can be used as reference tool. Numbers are used to express quantitative data, which are measures of values or counts. Numerical variables are the subject of quantitative data (e.g. how many; how much; or how often). Qualitative data can be represented by a name, symbol, or number code and are measures of "types."
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2. what characteristic must the solvents in a liquid-liquid extraction solvent system share with one another?
In solvent extraction, we use two solvents. The important characteristic of extracting solvent is it should be immiscible with the second solvent.
What is solvent extraction and why is it important?
Solvent extraction also called liquid-liquid extraction (LLE) and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids.The main purpose of solvent extraction is to isolate hazardous materials from the sediments and sludge or separate the useful components from debris.What are immiscible liquids?
Immiscible liquids are those which won't mix to give a single phase.
Oil and water are examples of immiscible liquids.
Thus, in liquid-liquid extraction, the two solvents should be immiscible with each other.
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Name the following structure. (Points)
Thank you, image is attached !
IUPAC nomenclature of structure 1 is 5-bromo-3-ethyl-2,2-dimethylhexane and for structure 2 it is 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
IUPAC nomenclature is based on naming a molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring. All deviations, either multiple bonds or atoms other than carbon and hydrogen, are indicated by prefixes or suffixes according to a specific set of priorities
In structure 1 the longest chain was found to be a 6 carbon chain and the numbering started from the side where it is highly substituted. Hence the name is 5-bromo-3-ethyl-2,2-dimethylhexane
In structure 2 we have a cyclic structure and so the numbering will be done in such a way that all the substituent gets the least numbering hence the name of the compound will be 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
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(1) what is the element with an electron configuration of 1s22s22p63s23p64s23d1? fill in the blank 1 (2) what is the element with an electron configuration of 1s22s22p3?
The first element whose atomic number is 21 is Scandium and the second element whose atomic number is 7 is Nitrogen. Based on electronic configuration
Electronic configuration is a systematic way of distributing the electrons in their orbitals Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.
Electron Configurations are useful for:
Determining the valency of an element.
Predicting the properties of a group of elements (elements with similar electron configurations tend to exhibit similar properties).
Interpreting atomic spectra.
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. at the beginning of his experiment, josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. this demonstrates what law?
josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.
In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.
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how many coulombs are required to produce 77.0 g of lithium metal from a sample of molten lithium chloride?
1930 coulombs are required to produce 77.0 g of lithium metal from a sample of molten lithium chloride.
Weight of metal deposited = ECt / 96500, Applied charge= 1930C
Efficiency= 77%
Effective charge= 77/100 (1930)=1486.1C
96500C liberate 1 mole.
1447.5C liberates 1486.1 / 96500 moles = 0.0154 moles .
What is Molten lithium chloride ?LiCl-Li, a molten mixture of metallic lithium and lithium chloride, are crucial to the electrolytic reduction of a variety of metal oxides. Researchers have been studying these mixes' distinctive high temperature physical and chemical characteristics for decades.
Lithium metal is primarily made from lithium chloride by electrolyzing a LiCl/KCl melt at 450 °C (842 °F). LiCl is additionally employed in automotive parts as an aluminum brazing flux. As a desiccant, it dries out air streams.
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an ideal gas sample has a certain volume at 350 k and 1 atm. the volume of the same sample at stp will be closest to the volume at 350 k and 1 atm multiplied by:
0.78 m³ is the volume of the same sample at standard temperature and pressure(stp) will be closest to the volume at 350 k and 1 atm.
What is ideal gas?The ideal gas law (PV = nRT) explains how the macroscopic properties of ideal gases are connected. The particles in an ideal gas are those that: (a) do not interact with one another; and (b) take up no space (have no volume). The ideal gas law does provide a good approximation of real gas behavior in many circumstances, but no gas is truly ideal.
PV = (nRT)
Where;
P₁ = initial pressure = 1 atm
V₁ = initial volume = 1 m³
T₁ = initial temperature = 350 k
P₂ = final pressure = 1 atm
V₂ = final volume = ?
T₂ = final temperature = 273 k
P₁V₁ / T₁ = P₂V₂ / T₂
Solving for V₂;
V₂ = P₁V₁T₂ / P₂T₁
V₂ = 1 × 1 × 273/350
V₂ = 273/350 m³
V₂ = 0.78 m³
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what is the ph of a solution made by mixing 40.00 ml of 0.100 m hcl with 25.00 ml of 0.100 m koh? assume that the volumes of the solutions are additive.
The pH of the solution which was made by mixing 40ml of 0.100 M HCL with 25.00ml of 0.100 M KOH is 1.669.
The base and the acid have the same molarity, but the acid's volume is more than the bases' volume, hence after mixing the resultant solution is acidic.
The concentration of OH⁻ solution in the mixture is
= (molarity of base * volume of base - molarity of acid * volume of acid) / total volume
= (40 mL*0.1M - 25 mL *0.1 M ) / (40 mL +25mL)/ 1000)
= 0.021428571 M
pH = -log(0.021428571) = 1.669
Hence the pH is 1.669
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Outline an alternative method and name equipment you could use to collect gas and work out the
volume produced in a more accurate way.
The alternative method to collect the gas and measure the volume is by a gas syringe.
What is a gas syringe?
Gas syringe is an equipment used to pump or withdraw gas from a closed container and can measure the volume of the gas produced in any chemical reaction.
The volume of the gas produced can be measured by reading the measuring scale on the gas syringe when the plunger moves in a gas syringe.
Hence, gas syringe is an alternative method to collect and measure the volume of the gas in a chemical reaction.
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what is the molarity of an ethanol (c2h6o) solution that was prepared by dissolving 50.500 g of ethanol into water to a final volume of 750.0 ml? assume the solution has a density of 1.20 g/ml.
The molarity of the ethanol is 11.29M .
What is molarity ?
Molar concentration, also known as molarity, amount concentration, or substance concentration, is a unit used to describe the amount of a substance in a solution expressed as a percentage of its volume. The number of moles per litre, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the most widely used unit for molarity in chemistry. One mol/L of a solution's concentration is referred to as one molar, or 1 M.
The mass of one mole of ethanol is 46.07 g/mol.
The number of mole in 50.500 g ethanol is 50.500/46.07 = 1.096158 mole.
We know that,
Mass = Density × Volume.
The final volume of the solution 750.0ml and the density of the solution is 1.20g/ml.
The mass of the solution is 1.20g/ml × 750.0ml = 900 gm.
The mass of water is (900-50.500) = 849.5 gm.
So the term molarity is defined as:
One of the most common units of concentration, expressed in M. It is defined as no moles of solute in 1 liter of solution.
The molarity of the solution is:
(1.09615 × 1000)/ 849.5 = 1.29M (approx.).
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Sold substance a has a melting point at 100c. liquid substance b has a freezing point at 110c. for each substance, identify its state of matter and describe the motion of its particles when the substance is at 115c.
Substance A is a solid at 115° Celsius. Its particles are not moving while Substance B is a liquid at 115° degrees Celsius. Its particles are moving around freely.
Solid particles in substance A are not moving because they are held together by strong intermolecular forces. Liquid particles in substance B are moving around freely because they are not held together by strong intermolecular forces.
Intermolecular forces are the forces that hold molecules together. These forces are much weaker than the covalent or ionic bonds that hold atoms together in a molecule, but they are strong enough to keep molecules from flying apart. The four main types of intermolecular forces are dipole-dipole forces, London dispersion forces, hydrogen bonding, and ion-dipole forces.
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