If 50.0ml of 2.0mnacl(aq) and 50.0ml of 1.0magno3(aq) were combined, the amount of precipitate formed would not change because the amount of AgCl did not change.
A silver nitrate solution is mixed with a sodium chloride solution. Although the resulting solution contains Na+, Ag+, Cl-, and NO3-, AgCl is not water soluble. Because Ag+ is now present in solution with Cl-, the two will react to form AgCl, which will precipitate from the solution.
If an ion is insoluble according to the solubility rules, it will combine with an ion from another reactant to form a solid. If all of the ions in a reaction are discovered to be soluble, there will be no precipitate formed.
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Complete question :
A student combines a solution of NaCl(aq) with a solution of AgNO3(aq), and a precipitate forms.
Assume that 50.0mL of 1.0MNaCl(aq) and 50.0mL of 1.0MAgNO3(aq) were combined. According to the balanced equation, if 50.0mL of 2.0MNaCl(aq) and 50.0mL of 1.0MAgNO3(aq) were combined, the amount of precipitate formed would
how many times acidic is pOH 12 than pOH 10
Answer:
100x less acidic
Explanation:
pOH is the inverse of pH, which is a measure of the acidity or basicity of a solution. The lower the pH of a solution, the more acidic it is, and the higher the pOH, the less acidic it is.
To determine how many times more acidic a solution with a pOH of 12 is compared to a solution with a pOH of 10, we can use the formula:
pH1 / pH2 = 10^(pOH1 - pOH2)
In this case, we are given that the pOH of the first solution is 12 and the pOH of the second solution is 10. We can plug these values into the formula to calculate the ratio of acidity:
pH1 / pH2 = 10^(12 - 10)
= 10^2
= 100
Therefore, a solution with a pOH of 12 is 100 times less acidic than a solution with a pOH of 10.
if the mass ratio of k to f in a compound is 2.06, how many grams of f are needed to react with 2.30 of k?
To determine the number of grams of element "f" needed to react with 2.30 grams of element "k", you can use the mass ratio provided in the problem. First, let's call the mass of "f" that is needed x. The mass ratio tells us that the mass of "f" is 2.06 times the mass of "k", so we can set up the following equation:
2.06 * x = 2.30
To solve for x, we can divide both sides of the equation by 2.06:
x = 2.30 / 2.06
This simplifies to:
x = 1.12 grams
Therefore, 1.12 grams of element "f" are needed to react with 2.30 grams of element "k".
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What element could react with nitrite to form an ionic bond?
Ionic molecules known as salts of nitrous acid include the nitrite ion, NO-2, and a positive ion, such Na+ in sodium nitrite (NaNO2)
What does possessing nitrites in your urine mean?So, if your urine contains nitrites, you probably have an urinary tract infection. (UTI). One of the most prevalent types of illnesses, particularly among women, is the UTI. Most UTIs damage the urethra and bladder (the tube that carries urine out of your body). Luckily, the majority of UTIs are not dangerous.
How can nitrites in urine be eliminated?Just when you have an urinary infection do you get nitrates in your urine, or nitrituria (UTI). Nitrites are found in the urine during urinalysis. UTI-causing bacteria are eradicated by antibiotics.
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which of the reagents below will oxidize a secondary alcohol to a ketone? multiple choice lialh4 hio4 k2cr2o7, h2so4/h2o hgso4, h2so4/h2o
The reagents below will oxidize a secondary alcohol to a ketone are k₂Cr₂O₇, H₂SO₄ / H₂O.
The reagents that used in the oxidation of the secondary alcohol to a ketone is given as : k₂Cr₂O₇, H₂SO₄ / H₂O. the one of the example of the oxidation of the secondary alcohol to the ketone is given as follows :
OH O
| Cr₂O₇²⁻ ||
R - CH - R ----------> R - C - R
Secondary ketone
alcohol
The further oxidation does not place because of the absence of the reactive C - H that found in the aldehyde. the tertiary alcohol will not under go oxidation.
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Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20 × 1014 s-1. What is the speed of the light in the medium?
Speed =frequency × wavelength
=466 x 6.20 x [tex]10^{14}[/tex]
=2.8892 x [tex]10^{17}[/tex] m/s
What is the speed of light?
The rate at which light waves go through various materials at the speed of light. Specifically, the speed of light in a vacuum is presently calculated to be 299,792,458 metres per second.
One of nature's basic constants is the speed of light. Its importance extends far beyond its use in characterizing an aspect of electromagnetic waves. It acts as the universe's only limiting velocity, setting an upper limit on both the speed of all material particles and the speed at which signals can travel. The speed of light (c) acts as a constant of proportionality in the well-known relativity equation, E = mc2, connecting the heretofore dissimilar ideas of mass (m) and energy (E).
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How much energy must be added to the reaction: 2 H₂O(g) → 2H₂(g) + 20, (g)?
kJ
It goes as follows: 2H2(g) + O2(g) 2H2O(g); H ≈ -484 Kilojoules. To create water, the forward reaction occurs 484 kilojoules of energy.
What is the purpose of kJ?Kilojoules are the units used to measure the energy that comes from food and liquids (kJ). Calorie is known as this in metric systems. Calories and kilojoules are equivalent units of energy. Four kilojoules make up one calorie.
How many kilojoules is a kilogram?A total energy deficit required to lose one kilogram of lean muscle, such as muscle, is around 7600 kilojoules. However, the energy deficit must be five times higher—roughly 39,500 kilojoules—to lose one kilogram of body fat.
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Answer: 483.64
Explanation: This is the right answer on edge ik cuz i just answered this question and got it right.....Hope this helps u out!! :D
Would you expect to find calcium metal used in conducting wire or
structural materials? Why or why not?
No, we would not expect to find calcium metal used in conducting wire or structural materials. In its pure metallic form, calcium is unstable and unfit for any structural use.
Why aren't calcium-based electrical lines used?
High temperatures cause calcium to burn in the air, creating nitride and oxide. When it combines with water, hydrogen is produced. Therefore, on Earth, it cannot serve as an electrical conductor.
Is calcium an electrical conductor?
Because metals contain moving electrons, they are effective conductors of electricity. Calcium is a metal. Iodine is a non-metal, and since non-metallic elements lack mobile electrons, they are typically poor conductors or non-conductors of electricity. Consequently, solid iodine does not conduct electricity while solid calcium does. The steel cladding of the silicon-calcium alloy cored wire is covered in silicon calcium powder.
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which salt dissolves in water to form an acidic solution ammonium nitrate sodium ethanoate potassium chloride sodium hydrogen carbonate
According to the information provided, ammonium chloride salt produces an acidic solution when dissolved in water.
What is the purpose of ammonium nitrate in farming?Ammonium nitrate is used by animal farmers for fertilising pasture and hay since urea-based fertilisers have a tendency to volatilize first from soil before the plants can utilise them. Additionally, it is very soluble, making it a good choice for irrigation systems.
Is ammonium nitrate harmful to humans?Ammonium nitrate is safe to handle under typical circumstances. However, breathing in large amounts or ammonium nitrate powder might irritate the respiratory system. Coughing, sore throats, breathing difficulties, and even suffocation are examples of symptoms.
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assume there exists some hypothetical metal that exhibits ferromagnetic behavior and that has 1 simple cubic crystal structure, and atomic radius of 0.130 nm and a saturation flux density of 0.75 tesla. determine the number of bohr magnetons per atom for this material
The number of bohr magnetons per atom for this material is 1.14 when some hypothetical metal that exhibits ferromagnetic behavior and that has 1 simple cubic crystal structure.
Given atomic radius of crystal structure (r) = 0.130nm
saturation flux density of crystal structure = 0.75tesla
We know that n = M/µN = B/µ0µN
n = BVc/µ0µN where Vc is the volume of crystal and B is bohr magneton
n = B(2r)^3/µ0µN = 0.75x(2x0.130x10-9)^3)/(1.25x10-26x9.27x10-24)
n = 13.18x10-30/11.5x10-50 = 1.14x10^20
Hence the number of bohr magnetons per atom for this material is 1.14 .
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this is the chemical formula for talc (the main ingredient in talcum powder): an analytical chemist has determined by measurements that there are moles of magnesium in a sample of talc. how many moles of oxygen are in the sample? be sure your answer has the correct number of significant digits.
Mg3 (Si,03),(OH), is the chemical formula for talc: an analytical chemist has determined by measurements that there are 90.4 moles of magnesium and 2.43 moles of oxygen in a sample of talc.
Talcum powder is formed from talc. Talc is a mineral created up primarily of metallic element, silicon, and oxygen. As a powder, it absorbs wet well and helps weigh down on friction, creating it helpful for keeping skin dry and serving to forestall rashes.This mineral is employed as a thickening agent and stuff. It's an ingredient in ceramics, paints, and building material.
Talc is a hydrous magnesium sheet salt with the statement Mg3Si4O10(OH)2. The elementary sheet consists of a layer of magnesium-oxygen/hydroxyl octahedra, sandwiched between 2 layers of siliconoxygen tetrahedra.
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a compound is found to contain 7.523 % phosphorus and 92.48 % iodine by mass. what is the empirical formula for this compound?
PI₃ is a compound is found to contain 7.523 % phosphorus and 92.48 % iodine by mass. PI₃ is the empirical formula for this compound.
It is shown that the empirical formula can be calculated using the phosphorus to iodine molar ratio.
The substance contains 7.523% of its weight in phosphorus, or 7.523 grammes of phosphorus for every gramme of the substance.
1 g of the substance multiplied by (mol/30.97g P) x (7.523g P) equals (0.2429 mol P) / (1 g substance)
In a manner similar to this, the following is determined for the iodine content per gramme of substance:
(0.7288 mol I / 1 g substance) x (mol/126.90 g I) x (92.48 g I) (1 g substance)
The molar ratio of P to I is calculated by dividing the two estimated values:
(0.3 mol I)/(0.7288 mol I) = (0.2429 mol P)/(1 g substance) (mol P)
Since the ratio of iodine to phosphorus is 3:1, the empirical formula, or the most fundamental formula, is PI3.
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calculate the volume in liters of a zinc oxalate solution that contains of zinc oxalate . round your answer to significant digits.
the volume in liters of a zinc oxalate solution that contains of zinc oxalate . round your answer to significant digits.
molarity of solution = 6.7 10 -5 mM = 6.7 10-8 M 150 micr
Homogeneous mixtures or solutions are defined as mixtures with a consistent makeup.
Heterogeneous mixes are those whose composition is not uniform.
The solvent is the chemical that makes up the majority of the combination, while the remaining substances are known as solutes.
The number of moles of solute per liter of solution is known as molarity or molar concentration, and it may be determined using the equation:
Text "Molarity" = "dfrac mol solute/text "text "L of solution"
L of solution = mol solute / molarity
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Identify all the contributors to a substances strength:
Choose all that apply. (There are two correct answers)
The atomic mass of the atoms
The number of bonds each atom makes to surrounding atoms
The number of neutrons in the nucleus
High levels of chaotic atomic geomtetry
The structures' atomic symmetry and geometry - crystal structure
The correction options are;
The number of bonds each atom makes to surrounding atomsThe structures' atomic symmetry and geometry - crystal structureFurther ExplanationThe number of bonds each atom makes to surrounding atoms contributes to the substance strength, the strength of a bond between two atoms increases as the number of electron pairs in the bond increases. Thus, we find that triple bonds are stronger and shorter than double bonds between the same two atoms; likewise, double bonds are stronger and shorter than single bonds between the same two atoms.
The crystal structure of a substance can contribute to its strength as it was found that the body-centered-cubic crystal structure is always the softer structure when it is involved in an allotropic transformation. The close-packed and more complex structures are inherently harder, and may be expected, therefore, to be better base materials for high strength alloys.
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assume there exists some hypothetical methat that exbihits ferromagnetic behavior and that has 1 simple cubic crystal strecutre, and atomic radius of 0.130 nm and a saturation flux density of 0.75 tesla. determine the number of bohr magnetons per atom for this material
When compared to a hypothetical ferromagnetic metal with a single simple cubic crystal structure, this substance possesses 1.14 bohr magnetons per atom.
Given that the cubic crystal atomic radius (r) is 0.130 nm
crystal structure's saturation flux density is equal to 0.75 tesla.
We are aware that n = M/N = B/0N.
n = BVc/0N, where BVc is the bohr magneton and Vc is the volume of the crystal.
N = 0.75x(2x0.130x10-9)3)/n = B(2r)3/0 (1.25x10-26x9.27x10-24)
n = 13.18x10-30/11.5x10-50 = 1.14x10^20
Therefore, this cubic crystal substance has 1.14 bohr magnetons per atom.
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How many moles exist in 3,000,000 particles of gold (Au)?
Answer:
4.98 x 10^-18 mole
Explanation:
1 mole has 6.022 x 10^23 particles
so 3,000,000/(6.022 x 10^23) = 4.98 x 10^-18 mole
What are two largest atoms on the periodic table? Why? Smallest? Why?
Answer:
Explanation:
The smallest atom on the periodic table is helium, He, and has a radius of 31 pm. Yeah, He is even smaller than hydrogen, H, which is 53 pm. Which atom is the largest? That would be cesium, Cs, which comes in with a radius of 343 pm. ^^
A balloon filled with air has a volume of 4.24 lters at 23.00°C. If the balloon is cooled at constant pressure to 5.00°C, what is its new volume?
The new volume if the balloon is cooled at constant pressure 5.00°C is 3.98 L.
How to calculate volume of gas ?The new volume is calculated using the Charles law formula
According to Charles' law, with constant pressure, the volume of an ideal gas increases in direct proportion to the absolute temperature. The law also stipulates that when the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion.
that is V1/ T1 = V2/T2 where,
V1 = 4.24 l
T1= 23c into kelvin = 23 +273 =296 K
T2 = 5.00 c into kelvin = 5.00 + 273 = 278 K
V2 = ?
by making V2 subject the subject of the formula by multiplying both side by T2
V2 = V1 xT2/ T1
V2 = (4.24 L x 278 K) / 296 k =3.98 L
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consider a solution containing 0.100 m naf and 0.126 m hf. calculate the concentration of fluoride ion after addition of 5.00 ml of 0.100 m hcl to 25.0 ml of this solution.
The Concentration of a Fluoride ion is [tex]0.0667 M[/tex]
The Hf and Fluoride ion makes a buffer system which can be written as :
[tex]HF\Longleftrightarrow H^{+} +F^{-}[/tex]
[tex]K_{a} =[H^{+}][/tex] X [tex]\frac{[F^{-} ]}{[HF]}[/tex]
both the buffer components are in the same final volume so we can simplify the equation as :
[tex]K_{a}=[H]^{+} \times \frac{[n_{F^{-} }] }{[HF]}[/tex]
before the reaction :
moles of hcl = v x c = (0.00500)L x (0.100)M=[tex]0.000500mol[/tex]moles of hf = v x c=(0.0250)L x (0.126)M=[tex]0.00315mol[/tex]moles of fluoride ion = v x c= (0.0250)L x (0.100)M=[tex]0.00250mol[/tex]hcl will react with fluoride to produce more hf:
after reaction:
moles of hf= [tex]0.00315 +0.000500[/tex]=[tex]0.00365mol[/tex]moles of fluoride = [tex]0.00250-0.000500[/tex]=[tex]0.00200mol[/tex]final volume = [tex]0.0250+0.005[/tex]=[tex]0.0300L[/tex]molarity of fluoride = = [tex]\frac{0.00200mol}{0.0300L}[/tex]= [tex]0.0667M[/tex]learn more concentration problems.
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(HELP ASAP)
Which of the following is not an example of general weather?
Warm temperatures
Rainfall
Tornadoes
Ocean breeze
The option that is not an example of general weather is Tornadoes.
The correct option is C.
What is weather?The weather of a place is the prevailing atmospheric condition of a place over a short period of time.
The weather of a place is susceptible to change as atmospheric conditions of the place change over time.
The general weather conditions of a place include;
the temperature of the place,atmospheric pressure,wind conditions, humidity, precipitation,cloud cover, etc.Some adverse weather conditions include tornadoes and typhoons.
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how many atoms of mercury are in a spherical drop of mercury (hg) that has a diameter of 1.0 mm. (dhg
There are 2.1 atoms of mercury.
Calculation:
Convert 0.0000355 mol of Hg to the '# of atoms of Hg' using Avagadro's number.
Avagadro's constant = 6.022 * 1023 atoms/ mole.
Hence 'number of atoms of Hg' in the given drop of mercury is
= 0.0000355 mol of Hg * 6.022 10²³ atoms of Hg 1 mole Hg
= 2.14* 1019 atoms of Hg.
In question, we are given 1.0 mm in 2 significant figures, so our final answer must also be in 2 significant figures.
Hence the number of atoms of Hg in a given drop of mercury is 2.1x10¹⁹ atoms Plugin 2.1.
Mercury is the smallest planet in the solar system and the closest to the sun. Its orbit around the Sun lasts 87.97 Earth days, making it the shortest of any planet in the solar system.
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Orange light has a frequency of 4.8×1014 s−1. What is the energy of one quantum of orange light?
The energy of one quantum of orange light, given that it has a frequency of 4.8×10¹⁴ s⁻¹ is 3.18×10⁻¹⁹ J
How do I determine the energy?We know that energy and frequency are related according to the following equation:
Energy (E) = Planck's constant (h) × frequency (f)
E = hf
Using the above formula, we can obtain the energy of one quantum of the orange light. Details below:
Frequency (f) = 4.8×10¹⁴ s⁻¹Planck's constant (h) = 6.626×10⁻³⁴ JsEnergy (E) = 6.23×10⁻¹⁹ JEnergy (E) = Planck's constant (h) × frequency (f)
E = hf
E = 6.626×10⁻³⁴ × 4.8×10¹⁴
E = 3.18×10⁻¹⁹ J
Thus, the energy is 3.18×10⁻¹⁹ J
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ella is interested in combining substances to form a new material. what does she need to know before she combines the substances to create a specific material? a. whether the substances are synthetic or from natural resources b. that all materials react to combine and form new products accidentally c. the physical and chemical properties of the material that will be formed d. the physical and chemical properties of the substances and how they react chemically
Ella is intrigued by the idea of fusing elements to create new materials. Before she mixes the ingredients to make a particular materials, she must understand the physical and chemical qualities of the constituent parts and how they interact.
Sanding just altered the surface's texture; the wood itself did not convert into a new substance. Even though a piece of metal may glow after being burnt in a fire, the metal remains the same substance both during and after cooling. The production, characterization, and use of materials with intriguing or potentially beneficial physical or chemical properties include the use of chemistry, according to the emerging and highly multidisciplinary field of study known as materials chemistry.Materials chemistry includes solid-state chemistry, nanoscience, and polymer chemistry since it encompasses inorganic, organic, polymeric, and hybrid materials. The creation of new technologies and the growth of the world economy both depend on materials chemistry. Looking back, we can see that synthetic materials have significantly raised global living standards and quality of life.
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np-237 has atomic mass of 237.0481 u. what is the binding energy per nucleon for this nuclide? the mass of a neutron is 1.0087 amu, the mass of a proton is 1.0073 amu and the mass of an electron is 5.486 x 10-4 amu. provide your answer in joules rounded to 3 significant digits.
A neutron has a mass of 1.0087 amu, a proton has a mass of 1.0073 amu, and an electron has a mass of 5.486 x 10-3.5 amu. Give your response in rounded joules.
mp stands for proton mass (1.007277 amu) mn = the neutron's mass (1.008665 amu). The neutron has a little smaller mass than a proton. A neutron is estimated to have a rest mass of 1.6749286 x 1027 kg. The units of energy and mass are equivalent in classical particle physics. The term "eV" in this context refers to an electron-volt, which is equal to one neutral proton. A neutron is a subatomic particle that can be found in the atom's nucleus. It weighs 1 amu and has no energy (is neutral). Average atomic mass is equal to f1M1, f2M2, f, and fnMn. where M is the isotope's mass number (weight) and f is the fraction indicating the isotope's natural abundance.
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the electronegativity is 2.1 for h and 1.8 for si. based on these electronegativities, sih4 would be expected to
The answer is (1)
The electronegativity is 2.1 for H and 1.8 for Si. Based on these electronegativities, [tex]SiH_{4}[/tex] would be expected to have polar covalent bonds with a partial negative charge on the H atoms.
What is meant by electronegativity?
The ability of an atom or functional group to draw electrons to itself is known as electronegativity in chemistry. An atom's electronegativity is influenced by both its atomic number and how far away from its charged nuclei its valence electrons are located.
What factors affect electronegativity?
The atomic number and the separation of the valence electrons from the charged nucleus have an impact on an atom's electronegativity. An atom or a substituent group will draw electrons in greater amounts the higher the associated electronegativity.
Due to the minor difference in electronegativity between the two atoms, which rules out the idea of their bond having a primarily ionic nature, the solution will be evident if you simply consider the possibilities provided.The difference in electronegativity between the two atoms must be more than 1.7 for a bond to be deemed ionic, which is impossible in your situation.However, there's an interesting comparison to be made with the famous C-H bond. Although there is a difference in electronegativity of about 0.3 between the two bonds, the Si-H bond is thought to be polar covalent and the C-H link is thought to be nonpolar covalent.The electron cloud of silicon will be greater than that of carbon since silicon is a larger atom. This indicates that it is more polarizable than carbon.This will enable the more electronegative hydrogen in the Si-H bond to distort silicon's electron cloud and generate two partial charges: a positive charge on silicon and a negative charge on hydrogen.To know more about electronegativity:
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I understand that the question you are looking for is:
The electronegativity is 2.1 for H and 1.8 for Si. Based on these electronegativities, [tex]SiH_{4}[/tex] would be expected to
have polar covalent bonds with a partial negative charge on the H atoms. be ionic and contain H ions be ionic and contain H* ions. have polar covalent bonds with a partial positive charge on the H atoms.Consider a PTFE molecule adjacent to a PVC molecule. Select all of the secondary bonding types that exist between these two molecules. hydrogen bonding interactions between temporarily induced and permanent dipoles interactions between dipoles that are temporarily induced B covalent bonding D ionic B metallic bonding D interactions between permanent dipoles
Choose every kind of secondary bonding that these two molecules have. 2 metallic hydrogen bonding dipoles that are both momentarily induced.
There are three different forms of interactions between molecules that result in these attractive forces: Dipole interactions, hydrogen bonding interactions, and molecule-molecule interactions are the order in which they occur (London dispersion forces). Polar molecular bonding produces hydrogen bonds, the strongest type of secondary bonding. Choose every kind of secondary bonding that these two molecules have. 2 metallic hydrogen bonding dipoles that are both momentarily induced. These can develop in water or hydrogen fluorides, for instance. When the electrons in two nearby atoms hold positions that cause the atoms to temporarily form dipoles, the consequence is the London dispersion force, a transient attractive force. Unlike main bonds, secondary bonds have substantially lower bonding energies.
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Compare and contrast sigma and pi bonds, including their shape and properties.
Sigma bonds are known to have cylindrical charge symmetry around the axis of the bond. No symmetry exists in pi bonds. Atoms with sigma bonds are less reactive. Atoms with pi bonds are highly reactive when compared to those with only sigma bonds.
Which element has a larger atomic radius F or Be
Answer:
F
Explanation:
A science class is going to do an experiment to investigate how water temperature changes the rate at which salt dissolves in water. What tool will be needed to measure the temperature of the water?
Answer:
thermometers
Explanation:
Answer: thermometer
Explanation: trust me ;)
A calorie is defined as the amount of energy required to raise the temperature of one lb of water by one degree celsius.
a. Trueb. False
Answer: The answer is true
Explanation:
461 j of energy is transferred to a system consisting of 2.0 moles of an ideal gas. if the volume of this gas stays at a constant 3.4 l, calculate the change in internal energy of the gas.
The gas's internal energy has increased by 461 J.
Thermodynamics' first law states:
ΔE= q+ w
ΔE= Change in internal energy
q= heat released or absorbed
w=work done or by the system
w= work done on the system= -PΔV
Volume is constant
So, ΔV = 0 and w=0
So q=+461 J {Heat absorbed by the system is positive}
ΔE= +461+0= +461 J
Consequently, the gas's internal energy has increased by 461 J.
A thermodynamic system's internal energy is the total amount of energy it contains. The energy required to create or prepare the system in its current internal condition comprises both internal kinetic energy and potential energy contributions. It keeps track of the system's energy gains and losses brought on by adjustments to its internal state. It excludes all external energies from surrounding force fields as well as the kinetic energy of motion of the entire system. The first law of thermodynamics, which is based on the idea that an isolated system has constant internal energy, is known as the law of conservation of energy. The internal energy is a broad quality.
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