How does adding water to the NaCl and SiO2 separate the two substances? What physical property is utilized for this separation?

Q: II. Predict whether AS is positive or negative for each of the following processes, assuming each…

A: Entropy is a measure of the number of possible arrangements the atoms in a system can have, in other…

Q: Cyanic acid (HOCN) is an extremely acrid, unstable substance. What are the[H3O+] and the pH of 0.10…

A: Given  Concentration of HOCN (c) = 0.10 M Ka = 3.5×10-4 [H3O+] = ?  pH=?

Q: potassium hydroxide (KOH(aq))   KOH( aq)                       K+  (aq)   +…

A: Given, Molarity of KOH = 1 mol/dm3 As we know,  KOH is strong base. It dissociated completely into…

Q: Moving an object some distance against an opposing force is known as Oforce O energy O work O…

A: This question is related to dimensional analysis of chemistry. Dimensional analysis is the analysis…

Q: Show the lewis structure of C2H2Cl2F2

A: Lewis structure also known as lewis dot structure given by American chemist G.N Lewis. He proposed…

Q: Consider the structure shown below. (a) What is the electronic geometry about the nitrogen? (b) How…

A: using the structure we have to find  geometry of N number of  bonds carbons hydrogens  bond…

Q: 2(a) Carbonic acid decomposes to water and carbon dioxide according to the following reaction: H₂CO3…

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Q: 8. True or False (use your periodic table/data sheet when appropriate) a. A Geiger counter detects…

A: (a) A Geiger counter, measured the radiation when the radiation collides with gas molecules it…

Q: A. What is the cell notation of the set-up? B. What is the standard cell potential (Eºcell)? C. If…

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Q: I = = = = + NH₂ Σ B Ph with the mechanism. H+

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Q: Ethanoic acid (CH3 COOH(aq)) is titrated with sodium hydroxide (NaOH(aq)) until the endpoint is…

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Q: The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73 × 10³ years. Suppose…

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Q: Binary mixtures of equal moles of which of the following acid-base combinations will lead to a…

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Q: What is the relationship between the equilibrium constants for reactions 1, 2, and 3? K₁ Reaction 1:…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: What is the reduction half reaction for the chemical reaction in a basic solution CIO-(aq) +…

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Q: Under what circumstances would you want to use a fluorometric procedure rather than an absorption…

A: We have to write in which situation  we use fluorimetric procedure rather than an absorption…

Q: Identify the stereochemical configuration of this compound. SH CH3 R Os

A: In order to assign R and S configuration, we need to number the atoms connected to chiral center…

Q: Directions: Balance the chemical equations and identify the type of chemical reaction for each of…

A: Dear student , since you have posted multiple parts questions we will allow to solve only first…

Q: 28.5 g

A: Mass of 1 square inch of air =14.7 psi   1 psi =453.592 grams   14.7 psi=   =14.7 x 453.592   =…

Q: Identify the colligative property? vapor pressure lowering,freezing point depression,boiling point…

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Q: ANSWER NUMBERS #1 TO #13. Predicting Products for Decomposition Reaction: • Carbonates (CO32): When…

A: As there are multiparts in the question we are supposed to answer only first three parts. Kindly…

Q: 6. Calculate the pH of a solution during a titration of 2.5M HCI with 35mL of 1.25M NaOH A. 12mL of…

A: Given: The molarity of HCl = 2.5 M The molarity of NaOH = 1.25 M The volume of NaOH = 35 mL We have…

Q: Identify the relationship between these compounds. он H NH2 HC H HN но H CH3 Diastereomers Identical…

A: The molecules with the same molecular formula but different structures are known as isomers. If the…

Q: A sample of gas is at 45.0 °C. At what temperature would the volume of this gas be the double of the…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: With the help of a suitable enthalpy cycle explain what happens when an ionic compound such as NaCl…

A: The answer is given

Q: You have carried out an experiment using the spectrophotometry concept. A solution containing…

A: (i) Use the dilution formula given below to calculate the concentration of colored compound in the…

Q: the given below. Wie 1. _H₂ + 0₂ 2. Zn _HCI 3. _Al _Fe(NO3)2 4. _NaNO3 _NaNO₂ NaOH + KNO3 >> 5. _H₂O…

A: The chemical equation is a symbolic representation of the Reaction takes place where one or more…

Q: Determine whether solutions of the following salts are acidic, basic, or neutral at 25°C: (a)…

A: NaHCO3 is sodium bicarbonate which is weak base ,pH is slightly higher than 7.  C6H5NH3NO2…

Q: The conjugate acid of ammonia is the weak acid NH4+. If a 0.2 M NH4CI solution has a pH of 5.0, what…

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Q: 2. a. Determine the standard heat of formation. AH* for the following reaction using the Data table.…

A: The standard heat of reaction is calculated as below:

Q: Consider the molecule, [Co(NH3)2(H₂O)2Cl2]. Identify the number of structural isomers,…

A: A question based on coordination complexes that is to be accomplished.

Q: Here is a hypothetical reaction and a table showing the initial concentrations of substances in the…

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Q: 8. What is the pH of a buffer solution made with 0.53M benzoic acid with Ka = 6.5 x 105 and 0.478M…

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Q: According to the following reaction, how many grams of iron (II) oxide will be formed upon the…

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Q: 1. Calculate the percent composition of the first element in the formulas for each of the following…

A: According to our guidelines we are asked to solve only the first question. So I have solved Question…

Q: Et Br NH₂ Et Et M IZ

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Q: Question 26 of 34 Provide the correct IUPAC name for the skeletal (line-bond) structure shown here.…

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Q: The table shows how K changes with T in the Born-Haber process. Calculate the enthalpy change of the…

A: Equilibrium constant(K), standard enthalpy of reaction, ∆Ho, standard entropy of reaction, ∆So and…

Q: Consider the titanium thermite reaction: Ti2O3 (s) + Al (s) -----> Al2O3 (s) + Ti (l) You attempt…

A: Dear student ,   since you have posted multiple parts questions we will allow to solve only first…

Q: Phosphorus is present in safety matches, but also appears in a variety of ions, covalent compounds,…

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Q: Express the following measurement to 5 significant figures: 872311 mm. (Type numerical values only;…

A: The given measurement is 872311 mm. Number of significant figures are 6 i.e. 8,7,2,3,1,1. For…

Q: Please give IUPAC name for the structure below! 0 Hi CN N3 4 OCH₂CH3

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Q: In the dreaded Zephyer galaxy there is a race of Fairies that have the ability to change their body…

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Q: Select the highest-priority group according to Cahn-Ingold-Prelog rules. CH₂NH2 CH2CO2H CH₂SH H

A: Cahn-Ingold-Prelog set some rule for choosing the highest priority group among different groups.

Q: [Report answer to correct number of significant figures] Convert 25.9 lb/in to g/cm [1kg = 2.205 lb;…

A: Here we have to convert 25.9 lb/in into g/cm . This can be done by unit dimension analysis.

Q: An aqueous solution of hydrobromic acid is standardized by titration with a 0.144 M solution of…

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Q: Determine the oxidation number of the transition metal in the following metal complexes. -3 -2 -1 0…

A: Coordination complex consists of central metal ion surrounded by molecules known as ligands.

Q: What is the maximum number of electrons that can occupy the "s" sublevel? A 10 B. 2 c. 6 D. 14 2.…

A: (1)  There are different type of orbitals with different shape and different electron occupying…

Q: Determine whether solutions of the following salts are acidic, basic, or neutral at 25°C: (a)…

A: When salt is form by strong acid and weak base the it will be acidic in nature and when it formed by…

Q: 2. A 275 mL gaseous sample has a pressure of 732.6 mm Hg at 98 °C, how many moles of gas are in the…

A: Given, T = 98°C  P = 732.6 mm Hg  V = 275 mL  n = ?

Group 14 Elements

The following elements come under group 14 of the periodic table.