4. What is the chemical composition of magnesium precipitate which is crystalline in appearance? * 5. What is the common name of your answer in number 4? 6. What chemical (must be in its concentrated form) is used in cleaning the platinum wire prior to flame test? (Chemical formula)

Q: 70. Consider the following. Need correct answer with explanation and why other options are incorrect…

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Q: each case below select the synthetic procedure/s that could be used to carry out the transformation,…

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Q: Give a clear explanation handwritten answer..give handwritten detailed answer.  Complete the…

A: Organic reactions are those in which organic reactant react to form organic products.

Q: Cite at least 3 examples of spontaneous phenomena.

A: Example 1 : Common salt dissolves in water of its own. Reason : when we put some salt in a glass of…

Q: 6. A solution is prepared by mixing 25.0 mL of 0.300 M KOH with 100 mL of 0.150 M benzoic acid,…

A: We are given a solution of benzoic acid and KOH. We have to find its pH.

Q: Which of the following species can act as a Lewis acid? D A B OBF4 (A) None of these i (B) CH3 (C)…

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Q: 70. Consider the following. Need correct answer with explanation and why other options are incorrect…

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Q: =rcise 2 Calculate the specific rotation of a compound of molecular weight 150 gm/mole if a 1.0M…

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A: This question belong to thermodynamics concept of spontaneity. We know that, ∆G = ∆H-T∆S…

Q: 1. OsO4, H₂O 2.PCC

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Q: Write the expression for the solubility product constant for PbI2…

A: #1: PbI2 is an ionic salt that is sparingly soluble in water.

Q: Write the formula of an alkane containing 16 carbon atoms. Answer:

A: We have to write the formula for alkane that has total 16 carbon atoms

Q: The following diagram represents a pair of isomers. Which of category of isomer do they belong to?…

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Q: Curion below a reaction Consider the given fuypoth dical reaction XY₂ + y² э хуй x is grouch 12 andy…

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Q: Overall, the hydrolysis of ATP is an exergonic reaction…it has a net release of energy. Which of the…

A: As given in question also the hydrolysis of ATP is an exergonic reaction that is it has a net…

Q: A solid object with a density of 22.4 g/ cm cubed is placed in a graduated cylinder filled with 4.67…

A: Density is defined as the mass of a substance per unit volume .So, Density = MassVolume  ------ 1

Q: Synthesize each compound from acetylene. You may use any other organic or inorganic reagents. a.…

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Q: 12. Which of the compounds is most acidic? NH₂ NH₂ 882 IV

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Q: Potassium fluorine is used for frosting glass. Calculate the molarity of a solution prepared by…

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Q: Corven a Structure of Poly khenat Cruive the stort Solubility of payshonal, Bablic gallic acid, in…

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Q: the initial temperture was 32.5 degrees celsius, what is its final temperture?  {density of…

A: Specific heat capacity is amount of heat required to raise temperature of one gram of a substance by…

Q: 4.30 The structure of 1,1,2,2-tetraiododisilane is shown here. (Reference: T. H. Johansen, K.…

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Q: Match the following with their corresponding chemical class and/or indication. erythromycin…

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Q: 1. A sample of ultrapure silicon was reacted with excess oxidizing yielding SiO₂. After proper…

A: Given : Weight of SiO2 precipitate = 3.1754 g Purity of ultrapure silicon = 99.98%

Q: name the compound NS4

A:

Q: From a 10-mL sample, a 1-mL aliquot was taken and diluted to 100mL.  From this, a 5-mL aliquot was…

A: Given that,  From a 10 mL sample, a 1 mL aliquot was taken and diluted to 100 mL.  From this, a 5…

Q: 7. Cite at least 3 examples of bases. b. a. C. 8. What is a substance that is capable of donating a…

A: Acid and base I) Acid: acid are those substances which produces a proton [H+] when dissolved in…

Q: The formula for ammonium sulfate is (NH4)2SO4. a. How many grams of ammonium sulfate are present in…

A: a) Given :- Formula unit of (NH4)2SO4  = 5.21 × 1022 formula unit Mass of (NH4)2SO4 = ?

Q: Oxidation number of S in Na2SO3 is Answer:

A:

Q: Which of these molecules and ions do not contain polar bonds? TeCl4 CIF5 XeF2 PH2 PCl3

A: we have to select the molecule which does not have polar bonds

Q: The equilibrium constant Ke for the reaction H₂(g) + CO₂(g) = H₂O(g) + CO(g) is 4.2 at 1650°C.…

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Q: What is the number of ee distant pairs in an atom with 32 electrons? O a. 1493 O b. 496 O c. 512 O…

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Q: The rate constant for the decomposition of gaseous azomethane, C₂ H6 N₂ (g) N₂ (g) + C₂ H6 (g) Is…

A: k = 40.8 min-1 t = 0.0500 min   Mass of Azomethane = 2.00 g

Q: Calculate the mass of KOH in 250.0 mL of a 6.50 % (w/w) KOH solution. Density of the solution is…

A: 250.0 mL of KOH solution has a density of 1.12 g/mL and the % w/w is 6.50 % .We have to calculate…

Q: Br он -Br Н-Br В Br Br 2

A:

Q: Find ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius…

A: ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius undergoes a…

Q: Write the equilibrium expression for the reaction…

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Q: For the reaction below, determine the difference in relevant particles that allow for determination…

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Q: How many moles of bromide ions (Br-) are present in 750.0 mL of 1.35 M NaBr? (1) 0.506 mol (2) 1.01…

A: Mole is a standard unit for measuring large quantities of very small entities such as molecules,…

Q: Rank these compounds from weakest to strongest acid H3C OH F3C. C H₂ II OH F3C III OH Cl3C O IV OH

A:

Q: You want to make 75 mL of a 0.15M sodium chloride (NaCl) solution How many grams of NaCl are needed?…

A: Given :  Volume of solution = 75 ml  Concentration of NaCl solution = 0.15 M

Q: 11-In the reaction with ascorbic acid each molecule of iodine a) loses 2 electrons b) It gains 3…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: If the [OH-] = 1 x 10-4M, which is true? O pH = 4 and [H3O+] = 1 x 10-4M O pH = 4 and [H3O+] = 1 x…

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Q: Number of atoms of Carbon in 18 moles of C4H10 are: 433.58x10^23 7.48x10^23 O 108.40x10^23…

A: The number of moles of a compound can be obtained by Avogadro's number. It can be calculated as…

Q: 3. Determine the pH of the buffer solution below: 0.25 M NH3 and 0.30 M NH4+ with pka = 4.76

A:

Q: 2 1 3 ОН 4 5 6 7 7 8 9 F LL

A: The most polar bond in the given molecule is  The number non-bonding electrons present in the given…

Q: H3C. The molecule is _______ and is. O a. nonpolar, insoluble O b. nonpolar, soluble O c. polar,…

A: Carboxylic acids are the organic compounds in which carboxyl (COOH) group is attached to carbon atom…

Q: The compound oxygen difluoride is quite reactive, giving oxygen and HF when treated with water:…

A: The bond dissociation energy can be calculated by using following formula

Q: 70. Consider the following. Need correct answer with explanation and why other options are incorrect…

A: A bond cleavage can be of two types : Heterolytic cleavage : The bond cleavage in which one atom…