A dilatation is a type of transformation that enlarges or reduces a figure (known as the preimage) to create a new figure (called the image)
Explain about the dilatation?Triglyceride dilation is the thermal expansion of crystalline triglycerides. When length scales (or energy scales) are multiplied by a common factor, an object's or law's scale invariance property does not change. A transformation called a dilation (similarity transformation) alters the size of a figure. A center point and a scaling factor, k, are necessary. Which kind of dilation it is—an enlargement or a reduction—depends on the value of k. An enlargement results from a dilatation if |k|>1. The reduction is the dilation if |k| 1.
To determine a dilated figure's scale factor, use the following simple formula: Scale factor is the product of the old shape's dimension and the new shape's dimension.
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What can you use to lower the amount of annual taxes you will pay over the course of a year?.
The key to lowering overall tax liability should be to reduce the percentage of your total salary that is subject to taxation.
Your income tax is calculated depending on your annual revenue, and for many of us, the simplest method to minimize that amount is to contribute to an independent contractor retirement plan or perhaps an individually maintained conventional IRA.
The new legislation also increased the age at which seniors must begin taking required minimum distributions (RMDs) from their 401(k) and traditional IRA accounts. Previously, RMDs had to be taken at the age of 712. That age was raised to 72 years with the passage of the SECURE Act. Depending on a person's tax bracket when they begin withdrawing funds, the transition to accepting distributions may have an impact on taxes.
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two differences between silicate and non-silicate minerals with respect to their composition and abundance in earth's crust. provide at least one example of silicate and one example of non-silicate.
Oxygen and silicon are found in silicate minerals. Minerals that lack silicate do not. Their make-up and prevalence in the crust of the earth.
What materials are silicate and which are non-silicate among the following?
Quartz, olivines, and garnet minerals are typical examples of silicate minerals. Sand, for instance, is mostly made of quartz, which is particularly widespread. Pyrite, also known as "fool's gold," is a common non-silicate mineral that is composed of iron and sulfur and is well-known for its misleading metallic brilliance.
What do you mean by non-silicate minerals?
Minerals that don't contain oxygen or silicon (Si) in a tetrahedral form. Calcite, gypsum, flourite, hailte, and pyrite are some of them. The mineral groups Oxides, Sulfides, Halides, and Phosphates are typical non-silicate mineral groups.
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1. Sodium is explosive in water and chlorine is a toxic gas. However, when the two elements
combine, they become table salt that people can eat. How do the numbers of electrons in
the outer shells of both elements play a role in their reaction?
When sodium and chlorine react, they transfer an electron from the outer shell of sodium to the outer shell of chlorine.
How Sodium and Chlorine react to form Table SaltSodium has a single valence electron in its outer shell, which means that it is highly reactive and tends to form positive ions by losing this electron in chemical reactions. Chlorine, on the other hand, has seven valence electrons in its outer shell and tends to form negative ions by gaining an extra electron in chemical reactions.
When sodium and chlorine react, they transfer an electron from the outer shell of sodium to the outer shell of chlorine. This transfer leads to the formation of sodium chloride, which is a stable compound that is commonly known as table salt.
The transfer of the electron allows both atoms to achieve a more stable electron configuration, with sodium attaining a full outer shell of electrons and chlorine attaining an octet of electrons.
2Na + Cl2 --> NaCl
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What do the following organic chemicals have in common? glyphosate , lindane, 2,4- d, chlordane.
Glyphosphate, lindane, 2,4-d, chlordane are the organic compound that have chlorine in common.
What is Organic compound is that organic compound are group of chemical substance that have the carbon and hydrogen atoms in which the bonds are covalently linked together.SOCs are organic (carbon-based) compounds created by humans. They serve as defoliants, fuel additives, insecticides, and building blocks for other organic compounds. Atrazine, 2,4-D, dioxin, and polychlorinated biphenyls are a few of the most well-known SOCs (PCBs).
Therefore the Glyphosphate, lindane, 2,4-d, chlordane are the organic compound that have chlorine in common and these chemicals are also use as herbicides that is to kill weeds, or to kill insects or pests because of the chlorine present inside it.
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how many grams of a 23.4% by mass naf solution is needed if you want to have 1.33 moles of naf? group of answer choices 239 g 31.1 g 13.1 g 55.9 g none of the above
The option(C) is correct, 55.9 g
What is mass?
The amount of matter in a substance or an object is quantified by its mass. Smaller masses can be measured in grammes, but the kilogramme (kg) is the standard SI unit for mass (g). You would use a balance to determine the mass.
What is gram?
The gramme (formerly gramme; SI unit sign g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogramme.
1.33moles=mass of NaF41.99g/molmass of NaF=1.33moles41.99g/molmass of NaF=55.85g.
Therefore, option(C) is correct, 55.9 g.
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What is the structural formula of glucose?.
if households choose to take some fraction of each check they deposit and hold it as currency, then the simple deposit multiplier the real-world multiplier.a. is equal to b. bears no relationship to c. is less than d. is greater than
The simple deposit multiplier is higher than the real-world money multiplier if households decide to keep some portion of each check they deposit in their possession as money.
For each unit of money a bank has in reserves, the deposit multiplier determines the most money that can be made. The portion of the deposit amount that can be lent out is represented by the deposit multiplier. The Federal Reserve's reserve requirement typically determines that proportion of real-world money multiplier.
The process by which banks lend money and the outcome is more money flowing in the economy is referred to as a "real-world money multiplier." That is, the amount of money is increased.
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lewis electron-dot diagrams for co2 and so2 are given above. the molecular geometry and polarity of the two substances are
The molecular geometry and polarity of the two substances are different because S atom has greater number of electrons domains.
What is lewis electron dot?Lewis dot structures also called electron dot structures are diagrams that describe the chemical bonding between atoms in a molecule. They also display the total number of lone pairs present in each of the atoms that constitute the molecule.
What is molecular geometry?A Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms.
What is polarity?the condition of having poles and especially magnetic or electrical poles. : attraction toward a particular object or in a specific direction.
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NOTE: The given question is incomplete on the portal. Here is the complete question.
QUESTION: Lewis electron dot diagrams foe CO₂ and SO₂ are given above. The molecular geometry and the polarity of two substances are
(a) the same because C and S have similar electronegativity values.
(b) different because S has greater number of electron domains ( regions of electron density) surrounding it than C has
(c) the same because the molecular formulas are similar
(d) different because the lone pair of electrons on the S atom make it the negative end of a dipole.
Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 557 g naoh(s) per liter of solution. Calculate the molarity of this saturated naoh(aq) solution.
This saturated naoh solution has a molarity of 13.92 M.
Moles of solute per liter of solution is known as molarity (M, or mol/L). We simply need to convert grams of NaOH to moles of NaOH in this instance because it has a molar mass of 39.997 g/mol:
We are given the following details:
557 g is the solute mass (sodium hydroxide).
Molar mass of sodium hydroxide is 39.99 g/mol.
Solution volume = 1 L
The equation's output is as follows when we enter values:
molarity = number of moles of solute/volume of solution in litres
= 557 g NaOH/1 L solution * 1 mol NaOH/39.997 g NaOH
= 13.92 mol NaOH/1 L solution = 13.92 M NaOH;
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Use the Ky values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO4 CH3COOH 7.5 x 10-3 1.8 x 10-5 acetic acid formic acid HCOOH 1.8 x 10-4 pH=1.9 __ pH=5.0 __ pH=__
By using the Ka values for given weak acids, the best component to prepare the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.
Buffer solution is the solution which is prepared by the mixture of a weak acid and its strong base or vice versa. Its pH is calculated using Henderson-Hasselbalch formula which is
pH=pKa+log([base]/[acid])
Buffer solutions are working well within the range of pKa±1. Find out pKa value using the formula
pKa=-logka
For H₃PO₄
pKa=-log(7.5×10⁻³)
pKa=2.12
For CH₃COOH
pKa=(1.8×10⁻⁵)
pKa=4.74
For HCOOH
pKa=-log(1.8×10⁻⁴)
pKa=3.74
If we check the range of each solution, then for phosphoric acid(H₃PO₄) it will be in between 1.12-3.12. For acetic acid(CH₃COOH), it is in between 3.74-5.74 and for formic acid(HCOOH), it is in between 2.74-4.74.
Therefore, the best component to preapre the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.
Your question is incomplete but the complete question would be that
Use the Ka values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO₄ CH3COOH 7.5 x 10⁻³ 1.8 x 10⁻⁵ acetic acid formic acid HCOOH 1.8 x 10⁻⁴ pH=1.9, pH=5.0, pH=3.9
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A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: c9h20.
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
What is a molar mass ?The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.
Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.
[tex]C_9H_{20.[/tex]
Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.
Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ carbon}{mass \ of \ the\ molecule }[/tex]%
= 108/128 * 100
= 84.37 %
Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ H}{mass \ of \ the\ molecule }[/tex] %
=20/128 *100 =15.63 %
The percentages of carbon and hydrogen 84.37% and 15.693% respectively.
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What food can be stored the longest?.
The longest-lasting foods can be kept using corn starch.
In particular, focus and patience are crucial. There is hardly any water at all in cornstarch. That is to say, it indicates that there is nowhere for mold or bacteria, which are the main causes of damaged food, to flourish. So, go ahead and utilize the cornstarch you have on hand.
Anyway, I have to remind you once more: Just because cornstarch has an endless shelf life storage doesn't mean you should store it in your cupboard with the lid off. Cornstarch and people both can become ill as a result of rain. It can "get sick" or even "die" if it is exposed to humid environments.
Therefore, secure storage is an excellent defense!
Consider using several cornstarch alternatives if you see any signs of deterioration in your cornstarch.
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if you started with 25.0 grams of h2s and 60.0 grams of o2 , how many grams of s8 would be produced, assuming 96 % yield?
The amount of S8 that would be generated, if the yield was 98%, is 47.1 grams.
What is mass?Mass is a physical body's total amount of matter.
This chemical process is
8H2S + 4O2 = S8 + 8H2O
Moles to ratios
8 mol H₂S: 4 mol O2: 1 mol S8
Calculate the moles of2 5.0 grams of H2S
Molar mass is equal to mass in grams.
H2S molar mass equals 2 x 1 g/mol plus 32.1 g/mol to equal 34.1 g/mol.
25.0 g divided by 34.1 g/mol gives 0.733 moles of H2S.
Moles from 60.0 g of oxygen
O2 molar mass equals 2 x 16 g/mol, or 32.0 g/mol.
60.0 g / 32.0 g = 1.875 moles of oxygen.
State-restricting substance
8 moles of H2S to 4 moles of O2 is equal to 2/1 in theory.
Actual ratio: 0.733 moles of H2S to 1.875 moles of oxygen.
The limiting agent is H2S. (it is consumed completely whilce some O2 remains unreacted).
Find out how many moles of S8 were created from 0.733 moles of H2S.
0.18325 mol S8 is equal to 1 mol S8 / 8 mol H2S x 0.733 mol H2S.
0.18325 mol S to mass conversion
Moles times molar mass equals mass.
in molar mass S8 equals 8 mol x 32.1 g/mol, or 256.8 g/mol.
mass = 256.8 g/mol x 0.18325 mol, or 47.1 grams.
As a result, the S8 weighs 47.1 g.
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when 100 ml of 0.16 m naf is added to 100 ml of 0.16 m hf, relative to the ph of the 0.10 m hf solution the ph of the resulting solution will
As 100 ml of 0.16 m naf and 100 ml of 0.16 m hf are combined, the resulting solution's pH rises when compared to the 0.10 m hf solution.
What does pH stand for?a metric for determining how basic or acidic a thing or solution is. The pH scale ranges from 0 to 14. A pH value of 7 is considered neutral on this scale, meaning it is neither acid nor basic. It's more acidic if the pH value is below 7, and more basic if the pH value is above 7.
What is a typical pH value?The pH scale goes from 0 (very acidic) to 14 (neutral) (strongly basic or alkaline). The neutral range on this scale has a pH of 7.0. Blood typically has a pH range of 7.35 to 7.45, making it mildly basic.
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if stars swells up to form to form a red giant ,they are
Answer:
A Red Giant
Explanation:
When the inward gravitational forces are less than the outward radiation pressure forces, the star swells and cools, thus turning red. High mass stars become red supergiants, low mass stars become red giants. The forces become unbalanced when the hydrogen begins to run out.
Brainliest Please?
Draw the major organic product of the reaction shown. The starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product.
The major organic product will be 3, 4 di-methyl pentane.
Chemical processes involving organic molecules are known as organic reactions. The fundamental kinds of organic chemistry reactions include redox reactions, oxidative degradation, pericyclic reactions, elimination processes, as well as substitution reactions.
In the given reaction the starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product. The final product will be 3, 4 di-methyl pentane.
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What is a reason lithium tends to lose one electron to form a +1 ion Li 1?.
The Li metals will lose an electron to resemble the next lowest noble gas thus, all the Lithium metals form +1 ions.
What is reason for +1 charge on lithium ?Lithium typically has two valence electrons after losing one electron to adopt the electron configuration of the nearby noble gas, helium. Atoms can fulfil the requirements of the octet rule in one of two ways. By exchanging valence electrons with other atoms, for example.
Lithium does desire to lose electrons in order to resemble helium because full valence shells are more stable states and all noble gases have full valence shells. Alkali metals thus shed one electron to achieve the closest noble gas configuration.Learn more about Charge here:
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a mixture of gases contains 12.0 grams of n2 and 15.0 grams of ar and has a total pressure of 1.32 atm. what is the partial pressure of n2?
12.0 grams od n2 & 15.0 gram of ar are present in a gas mixture with a pressure head of 1.32 atm. 0.704 atm is the pressure drop of n2.
How does pressure work?Another of the fundamental observable characteristics of the this phase of matter, pressure (P) is understood to be the force of all gas particulate interactions divided by the size of the wall.
What connections does pressure have to chemistry?Pressure has a major impact on every aspect of our life, from of the weather to flying. It is particularly crucial during chemical reactions. Chemists can compel chemical reactions to happen and hasten the transitions among solids, fluids, or gases by adjusting pressure.
Briefing:N=12.0, Ar=15.0
Total pressure=1.32
Partial pressure= n2
WN₂=12.0
WAr =15.0
nN₂=12/28 =0.42
nAr=15/40 =0.37
Xn₂=0.42/0.42+0.37 =0.53
Pn=Xn2×Ptotal
=0.53×1.32=0.69atm that ie nearly equal to 0.7atm.
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syndrome of inappropriate antidiuretic hormone and a sodium level of 123 meq/l which of the following prescriptions
SIADH is a condition in which high levels of a hormone causes the body to retain water and Hyponatremia occurs when blood sodium level is 123 meq/L.
What is prescribed for SIADH and sodium level of 123 meq/L?Treatment that is prescribed for SIADH is fluid and water restriction. Certain medications that inhibit the action of ADH is also included in treatment.
Blood sodium level is said to be normal if it's 135 to 145 milliequivalents per liter. It is hyponatremia, if sodium level is below 135 mEq/L, then
When the sodium level in the blood is too low then extra water goes into your cells and makes them swell. Treatment may include: Intravenous sodium solution to slowly raise the sodium levels in your blood and also some medications to manage the signs and symptoms of hyponatremia.
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A compound used as a dry-cleaning fluid was analyzed and found to contain 18.0% C, 2.27% H, and 79.7% Cl. Determine the empirical formula of the fluid.
The empirical formula of the fluid the compound used as a dry-cleaning fluid was analyzed and found to contain 18.0% C, 2.27% H, and 79.7% Cl the formula is [tex]C_{2} H_{3} Cl_{3}[/tex] is the empirical formula of the fluid.
As we can see the percentage of 18.0% C is carbon The compound 2.27% H, and 79.7% Cl compound .Now atomic mass are 12 C, 1 H , 35.53 for Cl.No. of moles of atoms are 1 for carbon , 2.27 for hydrogen , 2.248 for chlorine .No. of atomic ratio is 1 , 1.5 and 1.5.simplest ratio are 2, 3, 3. the empirical formula of the fluid is [tex]C_{2} H_{3} Cl_{3}[/tex]Read more about carbon:
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common ionic compounds containing ions from which of the following groups are always soluble in water? select the correct answer below: the alkali metals the alkaline earth metals the halogens the transition metals
Common ionic compounds containing ions always soluble in water is Alkali metals (Group 1).
Alkali metals are the six chemical elements in a group called Group 1(a) which are in the far left column of the periodic table. The following are the six alkali metal elements, their properties and uses.
The Elements and Groups of Alkali Metals
The six elements that are included in the alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). If you look at the periodic table, there is one more element at the top, namely hydrogen (H). However, hydrogen does not belong to the alkali metals as it is a gaseous element. All the elements in this group have one electron in their valence shell, or a single valence electron.
The most common alkali metal is sodium. The amount is 2.8 percent. The easiest type of sodium to find is sodium chloride or what we know as salt (NaCl). Then the second most easily found element is potassium with an amount of 2.6 percent throughout the earth. On the other hand, the rarest are rubidium, lithium and cesium. Each only amounted to 0.01 percent, 0.002 percent and 0.0007 percent. Meanwhile, francium is radioactive and only exists in nature for a short time.
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suppose you started your reaction with 215 mg 2-bromo-5-nitropyridine and an excess of benzylamine. what is the theoretical yield of product (mg)?
The theoretical yield of the product was found to be 0.215g.
define theoretical yield ?
The theoretical yield of a chemical reaction is the amount of product received from the full conversion of the limiting reactant. It is the quantity of product produced by a perfect (theoretical) chemical reaction, which is not the same as the amount produced by a laboratory reaction. Theoretical yield is often stated in grammes or moles.
Unlike theoretical yield, real yield is the amount of product generated by a reaction. Actual yield is often lower since few chemical reactions operate with 100% efficiency due to loss retrieving the product and other processes that diminish the product. Sometimes the actual yield exceeds the theoretical yield.
Perhaps as a result of a subsequent reaction that produces more product, or because the recovered product contains contaminants.
The ratio of actual yield to theoretical yield is commonly expressed as a percentage yield.
The theoretical yield of the product was found to be 0.215g.
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Two posssible lewis structures for the molecule hcn are given. Determine the formal charge on each atom in both structures.
From the Lewis structures of the compound, the formal charge is -1 and rests on the nitrogen atom.
What is the formal charge?We know that the formal charge has to do with the charge that the specie appears to have. We have to look at the structure and consider the number of the electron pairs on each of the elements in the compound and then this would help us to be able to decide the formal charge that would be on each structure.
Hence, upon a careful consideration of the structures we can see that the formal charge that can be found on each of the structures for the hydrogen cyanide is -1 and we are now faced with deciding the atom that should carry this formal charge.
Given that the nitrogen atom is more electronegative than the carbon atom then the negative charge ought to rest on the nitrogen rather than on the carbon atom.
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aluminum metal reacts with aqueous iron(iii) oxide to form aqueous aluminum oxide and iron metal. what is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest, whole-number stoichiometric coefficients? aluminum metal reacts with aqueous iron(iii) oxide to form aqueous aluminum oxide and iron metal. what is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest, whole-number stoichiometric coefficients? 1 2 3 4
Stoichiometric coefficient for aluminum when chemical equation is balanced using the lowest, whole-number stoichiometric coefficients is 2
What is stoichiometric coefficient?
It is the number written in front of atoms, ion and molecules in a chemical reaction to balance number of each element on both the reactant and product sides of the equation.
We have to determine the stoichiometric coefficient for aluminum when the chemical equation for reaction is balanced
The balanced chemical equation, using lowest whole-number stoichiometric coefficient, for the reaction between aluminum metal and aqueous iron(III) oxide to form aqueous aluminum oxide and iron metal is
2Al(s) + Fe2O3(aq) → Al2O3(aq) + 2Fe(s)
Thus, the stoichiometric coefficient for aluminum when the chemical equation is balanced using lowest, whole-number stoichiometric coefficients is 2
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Which compound in each set is aromatic? cycloheptatriene cycloheptatrienyl cation cycloheptatrienyl anioncyclopropene cyclopropenyl cation cyclopropenyl anion Explain your choice. Check all that apply. Compound can be aromatic if it is cyclic, nonplanar. Compound can be aromatic if it has four pairs of pi electrons. Compound can be aromatic if it has three pairs of pi electrons. Compound can be aromatic if it has one pair of pi electrons. Compound can be aromatic if it is cyclic, planar, every ring atom has a p orbital. Compound can be aromatic if it has two pairs of pi electrons.
cycloheptatrienyl cation is the compound that is aromatic in nature.
Aromaticity is a characteristic in which any planar system in which there is complete delocalization of the pi electron in the ring, and the system contain 4n+2 pi electrons in the ring is called aromatic. Example : Benzene, naphthalene, anthracene etc.
According to Huckel's rule, an aromatic compound must have (4n + 2)π electrons that form generally forms an uninterrupted π electron cloud. In addition, it must be planar and also cyclic. If the compound is not planar and cyclic then it is also not aromatic.
The cycloheptatrienyl (tropylium) cation is aromatic because it also has 6 electrons in its pi system. It is planar, cyclic and also has conjugated system.
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fourteen grams of nitrogen (atomic mass 14 amu) contains . group of answer choices 1 mole of nitrogen atoms 0.25 moles of nitrogen atoms not enough information is given 0.5 moles of nitrogen atoms
14 gram of nitrogen contains 0.5 mol of nitrogen.
We know that the no of mol= [tex]\frac{given mass}{molar mass}[/tex] , and nitrogen contains 2 N atom thus molar mass is 28. So no of mol is [tex]\frac{14}{28}[/tex] =0.5.
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What is an example of Scope 3 carbon emission Brainly?.
Scope 3 emissions examples include those from capital goods, upstream transportation and distribution, bought goods and services, fuel combustion and energy use, and employee commuting.
Although not all of them will apply to all businesses, scope 3 emissions can be broken down into 15 categories. Scope 3 emissions are thought to come from the burning of fuel combustion as well as processes downstream of the organization. One of the three emission streams included in the Greenhouse Gas Protocol is known as Scope 3 emissions (GHGP). Scope 1 includes emissions which are directly related to operations which a reporting company owns or supervises. fuel combustion that fall under scope 2 are those that are produced using energy that has been purchased, such electricity.
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ionic compounds are formed from ionic bonds, whereby an electron is transferred from the metal cation to the nonmetal anion. ions form solid lattices of ions. covalent compounds form solids through the attraction of two covalent molecules. since the attraction between two covalent molecules is weak compared to the ionic bonds holding an ionic compound together, ionic compounds tend to have higher melting points. which of the following compounds has the highest boiling point? view available hint(s)for part c ionic compounds are formed from ionic bonds, whereby an electron is transferred from the metal cation to the nonmetal anion. ions form solid lattices of ions. covalent compounds form solids through the attraction of two covalent molecules. since the attraction between two covalent molecules is weak compared to the ionic bonds holding an ionic compound together, ionic compounds tend to have higher melting points. which of the following compounds has the highest boiling point? f2 naf hf clf
Ionic Compounds have high boiling point compare to covalent bon due to presence of electrostatic force.
Ionic bonds, also known as electrovalent bonds, are created in chemical compounds when ions with different charges attract one another electrostatically. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this sort is created. If an atom receives electrons, it generates a negatively charged ion (cation), and if it loses electrons, it forms a positively charged ion (cation) (anion).
The best examples of this sort of chemical are those created when alkali and alkaline-earth metals are combined with nonmetals. Ionic bonding results in the formation of electrovalent or ionic molecules. The electrostatic forces of attraction between opposing charges and repulsion between similar charges are what keep the ions in these specific types of ionic crystalline solids aligned.
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What assets did best during the Great Depression?.
Smart investors are looking for more reliable assets to avoid losing wealth in today's market, which has unpredictable stock market conditions.
Even if our economy may have been improving, recent developments have had a significant impact on the market. History has shown how crucial assets that can withstand a depression are. When it comes to learning how to preserve wealth during a depression, the Great Depression ranks among history's greatest teachers.
During a market crash or depression, the two most crucial assets to have on hand are gold and cash.
During depressions, stocks and mutual funds are regarded as a significant bet. While safer assets are Treasury bonds, banknotes, and notes. The American government issuing these products. Once they reach maturity, they offer the buyer a fixed rate of interest.
Foreign bonds were once widely advocated as a depression-resistant investment option by numerous experts. This is not always a safe bet, as recent events have demonstrated. Due to the impact on the economies of all nations caused by global pandemics and other market instabilities, this has lost its appeal as a wise investment.
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how many silicon atoms are in a computer chip with a mass of 5.68 mg? (hint: there are 1000 mg in a gram)
The silicon chip has [tex]1.22 * 10^{20}[/tex] silicon atoms.
The silicon chip used in an integrated circuit of a microcomputer weighs 5.68mg.
When weight is converted into grams, it gives [tex]5.68 * 10^{-3}[/tex]
To find the number of silicon atoms required, the weight must be divided with atomic weight as shown
[tex]5.68 * 10^{-3} / 28[/tex]
The obtained value must be multiplied with [tex]N_{A}[/tex] value which is [tex]6.023 * 10^{23}[/tex]
This gives as the numbers of silicon atoms present in the chip [tex]1.22 * 10^{20}[/tex]
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