The limiting reactant for each amount of reactants in the reaction 2Na(s) + Br₂(g) -> 2NaBr(s) can be determined by comparing the number of moles of each reactant to the balanced equation and identifying which reactant runs out first. option B to D.
What is limiting reactant?The limiting reactant (or limiting reagent) is the reactant that is consumed first in a chemical reaction, limiting the amount of product that can be formed.
a) 2 mol Na, 2 mol Br₂:
The balanced equation states that for every 2 moles of Na, 2 moles of Br₂ are required. Since the amount of Na and Br₂ are the same, either one could be the limiting reactant.
b) 2.5 mol Na, 1 mol Br₂:
The balanced equation states that for every 2 moles of Na, 2 moles of Br₂ are required. Since there is only 1 mol of Br₂ and 2.5 mol of Na, Br₂ is the limiting reactant.
c) 1.8 mol Na, 1.4 mol Br₂:
The balanced equation states that for every 2 moles of Na, 2 moles of Br₂ are required. Since there is only 1.4 mol of Br₂ and 1.8 mol of Na, Br₂ is the limiting reactant.
d) 12.6 mol Na, 6.9 mol Br₂:
The balanced equation states that for every 2 moles of Na, 2 moles of Br₂ are required. Since there is only 6.9 mol of Br₂ and 12.6 mol of Na, Br₂ is the limiting reactant.
In summary, the limiting reactant is the one that runs out first, and the amount of product formed will be limited by the amount of limiting reactant present. In the reaction 2Na (s) + Br₂(g) -> 2 NaBr(s), Br₂ is always the limiting reactant.
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if you have a total of 0.6 moles of ch3cooh, how many moles of naoh would you need to completely neutralize ch3cooh? group of answer choices
We have choice (d) 0.6 mole of NaOH as the response based on the question.
How can acid be neutralized?The proportion of H3O+ ions within the solution is reduced by adding a base. Chemically speaking, a base and a acid are opposites. An acidic solution moves away from the centre of the pH scale and becomes less acidic as a base is introduced. This process of neutralize acid is known as neutralization .
For neutralization reaction :
Number of moles of acid, CH3COOH = Number of moles of base, NaOH = 0.6 mol
So, number of moles of NaOH required = 0.6 mol of NaOH
Therefore, option (d) " 0.6 moles of NaOH " is the answer.
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The Complete Question :
if you have a total of 0.6 moles of CH₃COOH, how many moles of NaOH would you need to completely neutralize CH₃COOH.
A) 0.9 moles NaOH
B) 0.3 moles NaOH
C) No test is provided
D) 0.6 moles NaOH
two samples of matter from two different sources are analyzed and have the same mass percent composition of their elements. what can the samples be classified as?
If two samples of matter from two different sources have the same mass percent composition of their elements, they can be classified as isotopic compounds.
Isotopic compounds are compounds that have the same number and types of atoms, but they may have different isotopes of those atoms. Isotopes are atoms of the same element that have the same number of protons but a different number of neutrons.
Because they have the same number of protons, they have the same atomic number and chemical properties, but because they have different numbers of neutrons, they have different atomic masses and may have different physical properties.
When two samples have the same mass percent composition of their elements, it means that they have the same number of atoms of each element, and the weight of each element is also the same, which means that they are isotopic compounds.
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Determine the enthalpy of solution for a solid with ΔH values as described in each scenario.
- a solid with ΔH values of approximately equal magnitude for each of the steps involved in the solution formation process.
- a solid with ΔH values for the breaking of attractions that are three times the magnitude compared to forming of attractions
- a solid with ΔH values for the breaking of attractions that are one third the magnitude compared to forming of attractions
Chemistry is the name of the scientific discipline that examines molecules and chemical bonds. There are two different kinds of solutions: acidic and basic.
The precise response is stated and is given.
Box 1, with a positive value for the H solution (endothermic)
Box 2's H value is zero, and Box 3's H solution has a negative value (exothermic)
What is enthalpy of heat?The amount of heat exchange between a system and its surroundings is measured by the delta H reaction (H). H can be either positive (endothermic, which requires heat), or negative (exothermic, which releases heat). How much heat is produced or absorbed during the dissolution process determines the enthalpy of solution formation. It can therefore be either negative (exothermic) or positive (endothermic).
The correct answer is mentioned as described:
Box 1, the value of ΔH solution is positive (endothermic)
Box 2 ΔH value = 0 and ,
Box 3 ΔH the value of ΔH solution is negative (exothermic)
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what is the difference between chemically defined and chemically complex media? give either a clinical
The difference among chemically defined and chemically complex media are the compositions.
What is the difference between chemically defined media and complex media?Chemically defined media contain pure biochemical; thus, the chemically defined media contain exactly known chemical composition. On the other hand, complex media contain complex materials such as blood, milk, beef extract, yeast extract, etc., so the chemical composition of the complex media is unknown.
Chemically defined media is all known compositions, The example is being glucose broth. When chemically complex media is unknown and can vary from batch to batch, example being nutrient broth.
Complex media are generally used for cultivation of bacterial pathogens and other fastidious bacteria. Most pathogenic bacteria of animals, that have adapted themselves to growth in animal tissues, need complex media for their growth.
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A tudent wa determining the texture of a oil but took the 2 hour reading 30 minute late. The tudent will probably over etimate the amount of in the ample
The student's knowledge is limited to the fact that the sample is not a heterogeneous combination.
What is mean by ample?In terms of size, scope, or capacity, generous or superior. There was space for a sizable garden—generously enough to meet a demand or necessity. Its root word, amplus, means "big," "broad," or "spacious" in Latin. The roots of the terms amplitude and amplify are identical. Although the word "amplitude" can also refer to the state of being ample, it is normally employed in technical and scientific measures in a more particular manner.
What is ample used for?Ample refers to sufficient or appropriate amounts. It can also be used to denote abundance or plenty—more than enough. It is frequently used to denote that there is enough or more than enough of what is required in the context of things like time, place, space, supplies, or resources (such food and money).
The sample of material provided to the student is said to be uniform in both color and texture. The makeup of a homogeneous sample is uniform, and it's probable that this one is as well. The composition of a compound is uniform, and this sample might be one. Additionally, an element has a consistent composition, hence the sample might be an element. Last but not least, a heterogeneous sample is one that does not have a uniform makeup; as a result, this sample is unquestionably not heterogeneous.
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Identify the Lewis acid in the followingreaction:
Hg^{2+}(aq)+\rm 4CN^-(aq) <=> {Hg(CN)_4}^{2-}(aq)
a. Hg^{2+}
b. CN^-
c. {Hg(CN)_4}^{2-}
Lewis acid will be hg2+ in the reaction hg2+(aq)+4cn(aq)hg(cn)42(aq). Lewis acids are chemical entities that have an empty orbital.
Write Lewis acid examples in ch4 ?Ammonia giving to a Lewis acid or an electron acceptor. All substances cannot function as Lewis bases. For instance, the valence electrons in the chemical compound methane (CH4) are all in pairs. Hydrogen isn't a Lewis base because these bonding units are too secure to transfer under usual circumstances.
How can a Lewis acid be recognized?Each Lewis acid-base reaction has an acid and a base. Strategy: Find the reactant that lacks an electron and the reaction that can donate an electron pair in each equation. The Lewis acid is the electron-deficient molecule, while the other is the
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I need help ASAP! Both questions please!!
Answer and Explanation for the First Question:
For the first question, when a 3.0 M aqueous NaOH solution is added to a neutral solution containing litmus, the color change in the solution would be from purple to blue. Thus, the answer would be C.
Litmus exists in solution in equilibrium form as H-Lit(aq) (red) ⇌ H⁺(aq) + Lit⁻(aq) (blue). At around pH 7, or neutral, the solution contains an equal amount of both forms of litmus, resulting in a purple color. This is because there are always some H⁺ ions present in the solution, even in neutral solutions, and the red and blue forms of litmus are present in equal amounts, which make the solution purple.
When a strong base like NaOH is added to the litmus solution, the OH⁻ ions from NaOH fully dissociate and react with the H⁺ ions in the litmus solution, forming water. This reaction causes the equilibrium position to shift in the direction of replacing the lost H⁺ ions. As more H-Lit(aq) molecules dissociate to form H⁺(aq) and Lit⁻(aq), the litmus becomes more ionized.
Since ionized litmus in solution is blue, the color of the solution will change from a neutral purple to a basic blue.
Answer and Explanation for the Second Question:
For the second question, according to the information given, the most likely pH of the solution is 6.0. Thus, the answer would be B.
The pH of the solution can be determined by looking at the color change of the three indicators added. Bromocresol green is yellow at the acidic end of its range, blue at the basic end of its range, and its pH range is 3.8 to 5.4. Chlorophenol red is yellow at the acidic end of its range, red at the basic end of its range, and its pH range is 5.2 to 6.8. Thymol blue is yellow at the acidic end of its range, blue at the basic end of its range, and its pH range is 8.0 to 9.6. Since the solution is blue when bromocresol green is added and orange when chlorophenol red is added, the pH of the solution must be between 5.4 and 6.8. The only possible value in this range is 6.0, which is why it is the most likely pH of the solution.
What is the molarity when 24 grams of lioh is added to 200 ml of water?
24 grams of lioh is added to 200 ml of water the molarity is 8M.
What is meant by molarity?
The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity.The molar concentration of a solution is another name for molarity.A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration.The number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.One mol/L of a solution's concentration is referred to as one molar, or 1 M.molarity = 8M
Given weight = 24g
molar mass of lithium hydroxide = 7+16+1=24g
volume = 200ml
= 0.25ml
Number of mole (n) = given weight /molar mass of lithium hydroxide
n = 24/24
=1
Molality = Number of mole (n) /volume of solvent
molality = 0.25L / 1
= 8M
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A chemist wants to find Kc for the following reaction at 736 K:2NH3(g) + 3 I2 (g) LaTeX: \Longleftrightarrow ? 6HI(g) + N2(g) Kc = ?Use the following data at 736 K to find the unknown Kc:(1) N2(g) + 3 H2(g) LaTeX: \Longleftrightarrow ? 2 NH3(g) Kc1 = 0.318(2) H2(g) + I2(g) LaTeX: \Longleftrightarrow ? 2 HI(g) Kc2 = 55Enter to 0 decimal places.
Kc for the reaction [tex]2NH3(g) + 3 I2 (g) LaTeX: \Longleftrightarrow ? 6HI(g) + N2(g)[/tex]at 736 K is 87000
To find the Kc of the given reaction at 736 K, we can use the equilibrium constant expression for the reaction and the given Kc values for the two related reactions.
The equilibrium constant expression for the reaction at 736K is:
[tex]Kc = [HI]^6 * [N_2] / [NH_3]^2 * [I_2]^3[/tex]
We can then use the given Kc values for the two related reactions to find the Kc of the given reaction:
[tex]Kc1 = [NH_3]^2 / [N_2] * [H_2]^3[/tex] = 0.318
[tex]Kc2 = [HI]^2 / [H_2] * [I2][/tex] = 55
We can then substitute the Kc1 and Kc2 values into the Kc expression for the given reaction and solve for Kc:
Kc = ([tex]Kc1 * Kc_2^3[/tex]) = 0.318 * 55^3 = approximately 8.7 x 10^4
So, Kc = 87000
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which term best describes filling a tank and treating the water or preparing a chemical solution before the tank is emptied and ready to repeat the process?
The term "activated sludge" refers to the process of filling a tank with water or a chemical solution, treating it, and then emptying the tank so the process can be repeated.
A biological floc made up of bacteria and protozoa is used in the activated sludge process, a form of biological wastewater treatment method, to treat sewage or industrial wastewaters. According to WEF, the term "activated sludge" describes a flocculent culture of organisms grown in regulated circumstances in aeration tanks. Activated sludge often has a brown hue. Waste activated biosolids or waste activated solids are other names for activated sludge. The activated sludge method can be employed in a sewage (or industrial wastewater) treatment facility for one or more of the following goals: biological matter is oxidizing carbonaceous stuff.
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g in the beta oxidation pathway, what is the product of the enzyme acyl coa-dehydrogenase? assume the starting saturated fatty acid contains n carbons and n is an even number.
Assuming n is even and the initial saturated fatty acid has carbons CH Acetyl-CoA is the end result of acyl CoA-dehydrogenase.
What function does acyl-CoA dehydrogenase serve in the metabolism of fatty acids?ACAD are enzymes that catalyze the,-dehydrogenation of acyl-CoA derivatives in the catabolism of fatty acids and amino acids. The reconstructed human genome now recognizes eleven ACADs, and numerous homologs have been discovered in bacteria, mushrooms, plants, and worms.
What is acyl CoA dehydrogenase's purpose? What impact might a lack of acyl-CoA have?Overview. Low-molecular-weight acyl-CoA dehydrogenase An hereditary condition called MCAD deficiency hinders your body from metabolizing specific fats into energy. Consequently, your blood sugar level will increase.
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Indicate the hybridization about each interior atom in N2H2 (skeletal structure HNNH).
a. 1st N (sp 2); 2nd N (sp 2)
b. 1st N (sp 3); 2nd N (sp 2)
c. 1st N (sp 3); 2nd N (sp 3)
d. 1st N (sp 2); 2nd N (sp 3)
a. 1st N (sp 2); 2nd N (sp 2) is correct for the hybridization about each interior atom in N2H2.
What is the hybridization of nitrogen atoms in N2H2 molecule?The nitrogen atoms in N2H2 molecule are sp2 hybridized. This is because the nitrogen atoms are bonded to three other atoms (two hydrogen atoms and one nitrogen atom) in a trigonal planar geometry, which requires three hybrid orbitals for bonding.
How to define the concept hybridization?Hybridization is a theoretical concept used in chemistry to explain the bonding geometry of certain atoms in a molecule. It refers to the process of mixing atomic orbitals of similar energy to form a set of equivalent hybrid orbitals. The hybridization of an atom can be determined by the number and type of atoms it is bonded to and the geometry of the molecule. The most common types of hybridization are sp3, sp2, and sp, which correspond to tetrahedral, trigonal planar, and linear geometries, respectively.
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Determine the position in the tube where the white ring of solid ammonium chloride (NH4Cl) will form.
When the two gases come together, an NH4Cl white ring will develop. Let x be the HCl's journey distance. The distance covered by the NH3 is thus equal to 1.463x. So, the white ring will form 0.8 m away from the HCl end.
Explain the white ring of solid ammonium chloride?The junction of the two gases within the tube develops a white ring of solid ammonium chloride. Use transparent plastic to cover an overhead projector's non-glass surfaces if necessary. Put a second cotton swab in concentrated aqueous ammonia and a Q-tip in concentrated hydrochloric acid (HCl) (NH3).Because hydrogen chloride diffuses more slowly than ammonia, the ring often develops closer to the hydrochloric acid end of the tube. This is the case because the rate of diffusion is inversely related to the square root of the gas's molecular mass and hydrogen chloride has nearly twice the molecular weight of ammonia.Because ammonia particles are lighter than hydrogen chloride particles and move more quickly, the white ring of ammonium chloride develops closer to the hydrochloric acid end.Learn more about solid ammonium chloride refer to :
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What is the % yield if 4 moles of hydrogen is reacted with 3 moles of oxygen and produces 3 moles of water?
The balanced equation for the reaction between hydrogen and oxygen to form water is:
2H2 + O2 -> 2H2O
To react 4 moles of hydrogen with 3 moles of oxygen, we will also need 1.5 moles of oxygen.
Since we have enough hydrogen and not enough oxygen to react completely, we can calculate the theoretical yield of water produced.
4 moles of H2 will react to produce 2 moles of H2O and 1.5 moles of O2 will react to produce 0.75 moles of H2O. Therefore, the total theoretical amount of water produced is 2 + 0.75 = 2.75 moles of water.
percent yield = (actual yield / theoretical yield) x 100
percent yield = (3 / 2.75) x 100 = 109.09%.
So the percent yield is 109.09%. This means that 109.09% of the theoretical yield was actually produced, and the reaction was more efficient than expected.
It's worth noting that percent yield can't be more than 100% because it implies that more than the theoretical amount of product was produced, which is not possible. In this case, the percent yield is not a realistic value, therefore, the actual yield and the theoretical yield should be rechecked.
List the following atoms in order of increasing ionization energy: Li, Na, C, O, F. A) Li < Na < C < O < F B) Na < Li < C < O < F C) F < O < C < Li < Na D) Na < Li < F < O < C
The order of increasing ionization energy: Na < Li < C < O < F. Ionization energy rises throughout time, and as a group descends, IE falls.
A neutral atom is simpler to remove an electron from than a positive ion, and a negative ion is even simpler. Since lower ionization energy indicates simpler electron removal, O+>O>O is the correct order for IE. Since fluorine has more protons, it has a higher nuclear charge, which attracts electrons more strongly. Lithium is the group I element with the highest ionization enthalpy, but it also has the highest oxidation potential, making it the strongest reducing agent.
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Use the information in the square to answer the questions about copper. A purple box has C u at the center and 29 above. Below it says copper and below that 63.55.How many protons are in an atom of copper
The number of protons in an atom of copper is 29.
It can be determined from the element symbol, Cu, which stands for Copper. The atomic number of an element is the number of protons in the nucleus of an atom of that element and is typically located above the element symbol. In this case, the atomic number of copper is 29, as indicated by the number 29 above the element symbol Cu. This is the information provided in the square.
Additionally, we can calculate the number of neutrons by the given information.
The number of neutrons= Mass number - Atomic number.
In this case,
The number of protons in Cu= 63 - 29 = 34.
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According to Boyle's Law, the volume of a gas varies directly with its pressure when temperature is held constant.
According to Boyle's Law, the volume of a gas varies directly with its pressure when the temperature is held constant. The above statement is true statement.
Boyle's law is a fundamental law of chemistry that describes the behavior of gases kept at a constant temperature. Discovered by Robert A. Boyle in 1662, this law states that at a constant temperature, the volume of a gas is inversely proportional to the pressure exerted by it. Boyle observed that the product of pressure and volume is approximately constant. The product of pressure and volume is exactly constant for an ideal gas. p * V = constant. This pressure-volume relationship is named after Boyle's law. Boyle's law, also known as Marriott's law, is the relationship that governs the compression and expansion of gases at a constant temperature.
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predict whether aqueous solutions of the following compounds are acidic, basic, or neutral.
Based on the products formed when they react with water, the following is true:
AlCl₃ - Acidic.
NaBr - Neutral.
NaClO - Acidic.
3CH₃NH₃NO₃ - Acidic.
Na₂SO₃ - Basic.
What is compounds?A chemical compound is a substance made of numerous identical molecules joined by chemical bonds and containing atoms from various chemical elements. Therefore, a molecule composed entirely of one element's atoms is not a compound.
Here,
given set of solution:
(a) AlCl3
(b) NaBr
(c) NaClO
(d) 3CH3NH34NO3
(e) Na2SO3
AlCl3 produces hydrochloric acid, a potent acid, when it reacts with water. The mixture is going to be acidic.
When NaBr reacts with water, it creates Sodium Hydroxide, a powerful base, and Hydrobromic acid, a powerful acid. They will balance each other out because they are both powerful, leaving a neutral result.
Sodium Hydroxide, a weak acid and a strong base, are the products of NaClO. The solution will be simple.
Nitric Acid, a strong acid, and a weak base will be produced by 3CH3NH3NO3, making the solution acidic.
Na2SO3 would generate Sodium Hydroxide, a strong base, and a weak acid, making the solution basic.
The following is true based on the products formed when they react with water:
Acidic AlCl3.
NaBr is a neutral compound.
NaClO is an acidic compound.
3CH3NH3NO3 is an acidic compound.
Na2SO3 is a basic.
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Indicate whether each of the following molecules is capable of geometrical (cis-trans) isomerism.
a. 1,1-dichloro-1-butene
b. 4,5-dimethyl-2-pentyne
c. 1,3-dichloro-2-butene
d. 1,4-dichlorobenzene
Comment on each molecule's ability to exhibit geometric (cis-trans) isomerism. Please illustrate the structures for those who are.
Isomerization: what do you mean?Isomerism is the occurrence of molecules with the same number and type of atoms (and thus the same structure) but chemical and physical capabilities.
The three different isomer kinds are what?Positional, chain, and functional group isomers are the three types of structural isomer.
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then write the lewis structure for Ne. draw the particle by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons and nonbonding electrons
Neon: Ne, Z=10=10e-=152 2S2 2p The Structural formula for Ne looks like this. Lewis structures use the chemical symbol for each atom to show where it is located within the molecule's structure.
How are Lewis structures drawn, and what are they?
The distribution of valence electrons around the atoms of a molecule is depicted in a Lewis diagram. While lone electron pairs are depicted as dots beside each other atoms, shared electron pairs are shown as lines between them.
Describe Lewis's structure with an example.
The octet rule, which states that atoms share electron so that each has eight in its outer shell, is the foundation of a Metal lattice. For instance, the outer shell of an oxygens has six electrons.
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which represents the balanced nuclear equation for the beta minus decay of co-60?
A) 6/2He -> 6/3Li + 0/-1e
B) 60/27 Co -> 60/28Ni + 0/-1e
C) 32/15P -> 32/16S + 0/-1e
D) 15/8O -> 15/7N + 0/1e
The balanced nuclear equation for the beta minus decay of co-60 will be
60/27 Co -> 60/28Ni + 0/-1e.
Nuclear reaction are the processes in which one or more nuclides are produced from the collisions between the two atomic nuclei or the one atomic nucleus as well as a subatomic particle. The nuclides produced from nuclear reactions will be different from the reacting nuclei (commonly referred to as a parent nuclei).
In a nuclear reaction, the atomic number is conserved as well as the mass number will be conserved.
Therefore, 60 = A+0 ⇒ A = 60
Also, 27 = Z + (-1) ⇒ Z = 28
Thus, the element of x will be 60/28Ni.
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how many valence electrons total would be contained in a sample of 4.78 million kg of sulfur
The total number of valence electrons contained in a sample of 4.78 million kg of sulfur would be 5.3078 x [tex]10^{32[/tex] valence electrons.
Number of atoms in a mass of a sampleAccording to Avogadro, 1 mole of any substance contains 6.022 x [tex]10^{23[/tex] atoms.
4.78 million kg of sulfur = 4,700,800 kg = 4,700,800,000 grams
Mole = mass/molar mass
Mole of 4,700,800,000 grams sample of sulfur = 4,700,800,000/32
= 146900000 moles
146900000 moles = 146900000 x 6.022 x [tex]10^{23[/tex] atoms
= 8.8463 x [tex]10^{31[/tex] atoms
Now each atom of sulfur contains 6 valence electrons. Thus, total number of valence electrons would be:
6 x 8.8463 x [tex]10^{31[/tex] = 5.3078 x [tex]10^{32[/tex] valence electrons
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Enter the the Ksp expression for C2D3 in terms of the molar solubility x.
C2D3 has a solubility product constant of 9.14×10−9. What is the molar solubility of C2D3?
The molar solubility of C2D3 is calculated to be equal to 9.67 x 10^-3 mol/L .
What is molar solubility?The solubility of a substance is measured by the number of moles of the solute that dissolve in one liter of solution, or molar solubility. The quantity of ions dissolved per liter of solution is measured by molar solubility. In this case, solubility refers to how many ions can be dissolved in a specific volume of solvent.
As, C2D3 = (2x)^2 * (3x)^3= 108 x^5
Given, solubility product constant - 9.14×10−9
SO, 9.14 x 10^-9 = 108 x^5
Now, x = 9.67 x 10^-3
Hence, the molar solubility is 9.67 x 10^-3 mol/L.
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determine the number of moles of sodium in 3.148e22 atoms of sodium metal
Answer: 4.980e90
Explanation:
A student is given a sample of a pure, white crystalline substance. Which of the following would be most useful in providing data to determine if the substance is an ionic compound
The electrical conductivity of a substance's aqueous solution is tested if the substance is an ionic compound.
An ionic substance is one that is formed as a result of the transfer of electrons (s) from one atom to another of the combining species.
When a metal and a nonmetal chemical react, an electron is always transferred from the metal to the nonmetal. As a result, an ionic bond is always formed between a metal and a nonmetal. Water is a polar substance, and polar or ionic substances dissolve easily in it. When an ionic compound dissolves in water, it dissociates into ions. And, because electricity is the flow of ions or electrons, an ionic solution in water can conduct electricity.
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Complete and balance the following equation: H2O2(aq)+ClO2(aq)→ClO2−(aq)+O2(g) (basic solution) Express your answer as a chemical equation. Identify all of the phases in your answer. H2O2(aq)+2ClO2(aq)+2OH−(aq)→O2(g)+2ClO2−(aq)+2H2O(l) What is the oxidant and reductant?
H2O2 is the reductant and ClO2 is the oxidant.
What does the term "reductant" mean?A material used in photography to reduce the density of a negative or print by oxidizing part of the free silver; capable of reducing another substance as it itself is oxidized. alternatives: reducing agent, reducer.
What do the terms "reducing agent" and "reductant" mean?A reducing agent is a material that, in a redox process, loses electrons to other substances and undergoes oxidation to a higher valency state. One of the reactants of an oxidation-reduction process is a reducing agent, which decreases the other reactant by discharging electrons to it.
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Cite the evidence that indicates that only physical changes occur when a platinum wire is heated in a Bunsen burner flame. (More than one answer may be correct.) O A new substance was formed after heating the wire. O The wire changed color during the heating, O No change in the composition of the platinum could be detected. O The original appearance was restored when the wire cooled e Textbook and Media
Evidence that indicates that only physical changes occur when a platinum wire is heated are option B: the wire changed color and option D: original color was restored.
In a physical change, the substance's shape or appearance changes, but the type of matter it contains stays the same. In contrast, when matter undergoes a chemical transformation, at least one new substance with novel features is created. When platinum wire is heated in a burner flame, its look changes from silvery metallic to flaming red, which is an example of a physical transformation. However, cooling the platinum will return it to its natural appearance.
Platinum has a very low reactivity, therefore unlike many other metals, it does not react with air oxygen to generate a metallic oxide. It is only a physical alteration because heating doesn't result in any chemical changes.
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Try Again Your answer is incorrect. • Compound COCO3. Your answer is incorrect. • Compound NiSO4: Your answer is correct. It is traditional to write the number part of the charge first in an ion symbol.• Compound CrS: Your answer is correct. It is traditional to write the number part of the charge first in an ion symbol. • Compound VBrz: Your answer is correct. It is traditional to write the number part of the charge first in an ion symbol. Complete the table below by writing the symbols for the cation and anion that make up each ionic compound. The first row has been completed for you. ionic compound cation anion Naci Na a x 5 ? Coco, co? Ni Niso som Crs V Bry Br Explanation Recheck
molecule NiSO4 The response is accurate. In an ion symbol, the number component of the charge is often written first. Combination CrS: Your response is accurate.
Compound types: what are they?Different Compounds
Salts and molecular compounds are the two categories into which compounds can be divided. Covalent bonds hold the atoms together in molecular molecules. Ionic bonds hold it together in salts. Every compound is composed of one of these two types of bonds.
What makes water a compound, and why?Because it is composed of molecules of water, water is a compound. Water atoms don't actually exist. Atoms of hydrogen gas make up water molecules in a certain ratio of two hydrogen atoms to one oxygen atom.
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13 electrons are total in an element, what is it's quantum number.
Answer:
Explanation:
The quantum number of an element with 13 electrons is 2. The first quantum number, n, is the principal quantum number and describes the energy level of the electron. In this case, the principal quantum number of the element with 13 electrons is 2, meaning that the electrons are in the second energy level. The second quantum number, l, describes the shape of the orbital. In this case, the second quantum number is 1, meaning that the orbital is an s-orbital. The third quantum number, ml, describes the orientation of the orbital. In this case, the third quantum number is -1, 0, or +1, meaning that the orbital is oriented in the -x, 0, or +x direction. The fourth quantum number, ms, describes the spin of the electron. In this case, the fourth quantum number is +1/2 or -1/2, indicating that the electron has either a clockwise or counter-clockwise spin.
Write the chemical equation for the ionization of dimethylamine, (CH3)2NH in aqueous solution.
The reaction is also an example of proton transfer, as the proton (H+) from the dimethylamine is transferred to water, forming the cation and anion.
What is dimethylamine?Dimethylamine is an organic compound with the molecular formula CH3-2-NH2. It is a base, colorless gas with a strong, fishy odor and is used in a variety of industrial applications.
The ionization of dimethylamine (CH3)2NH in aqueous solution can be represented by the following chemical equation:
(CH3)2NH + H2O → (CH3)2NH2+ + OH-
In this reaction, dimethylamine reacts with a water molecule to form a dimethylammonium cation (CH3)2NH2+ and a hydroxide anion OH-. This reaction is an example of an acid-base reaction, where dimethylamine is the acid and water is the base. The reaction is also an example of proton transfer, as the proton (H+) from the dimethylamine is transferred to water, forming the cation and anion.
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