How many grams of BeCl₂ are needed to produce 3 grams of LiCl. How many grams of BeCl₂ are needed to produce 3 grams of BeH2. How many grams of LiH are needed to produce 3 grams of LiCl. How many grams of LiH are needed to produce 3 grams of BeH₂.

Q: What is the confirmatory reagent of lead sulfide? * O O O O K2CRO4 KCN SnClz HNO3

A: Lead sulfide ( PbS ) is a black precipitate.

Q: The enthalpy change for the & -8.82 x 10 kJ -4.41 x 10 kJ +4.41 x 10¹ kJ +8.82 x 10¹ kJ A. B. C. D.

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Q: Part C nmunication (3 marks) 3. OBSERVATION: A piece of chalk (calcium carbonate) was placed into…

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Q: Chemistry Correct each molecule in the drawing area below so that it has the structure it would have…

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Q: answer

A: We know that, phospholipid are a group of polar lipids that consist of two fatty acids, a glycerol…

Q: What is the percent ionization of a 0.75 M solution of ammonia? Kb(NH,) = 1.8 × 10-5 [?] %

A: Given ,  Ammonia concentration = 0.75 M Kb=1.8×10-5

Q: What volume of hydrogen gas will be produced by reacting 1.55g of beryllium in water at standard…

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Q: Give an example of nanoparticles found in animals and discuss it briefly.

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Q: provide a reasonable mechanism for the following reaction CX НО, OH H₂SO4 (cat)

A: Basically this reaction ia used in protection of aldehyde and ketone in order to prevent the…

Q: balloons are inflated with helium to a volume of 0.75 L at 27°C. One of the balloons was found…

A: V1 = 0.75 L  T1 = 27°C  T2 = 22°C  V2 = ?

Q: examples

A: Hybridization can be described as a technique that analyzes the different portions of the genetic…

Q: A beaker holds a mixture of 0.40 M HIO3 and 1.0 M HCOOH. Ka(HIO3) = 1.6 x 10-1 Ка(нсоон) = 1.77 ×…

A: Given: Ka (HIO3) = 1.6 × 10-1 Ka (HCOOH) = 1.77 × 10-4 We have to calculate the pH of a mixture of…

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Q: 4. Although the depletion of stratospheric ozone threatens life on Earth today, its accumulation was…

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Q: What is the pH of this buffer solution? 5.81 g of KF + 250. mL of 1.0 M HF Molar mass of KF = 58.1…

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Q: The [H+] = 1.1 x 10-3 M for the NaF / HF solution in the previous step. What is the pH of the…

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Q: (SHOW CALCULATIONS) What is the volume of a hydrogen gas sample containing 0.665 moles at 44.2°C and…

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Q: A solution is prepared by dissolving 6.9 grams of KCI MgCl2 6H₂O (MW = 277.85 g/mol) in sufficient…

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Q: Write a balanced net ionic equation to show why the solubility of PbCO3(s) increases in the presence…

A: We have to write a balanced net ionic equation to show why the Solubility of Pb(CO3) increases in…

Q: QUESTION 27 If each of the following compounds were placed into a column of silica gel for liquid…

A: In the column chromatography using silica as stationery phase which of the following compound eluted…

Q: d a solution by dissolving 5.66 grams of KCI Mg culate the weight per volume (w/v) percentage

A: Given, Mass of Solute = 5.66 g Volume of solution = 197 = 197000 mL %w/v = mass ×100/Volume

Q: The activation energy Ea for a particular reaction is 42.2 kJ/mol. How much faster is the reaction…

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Q: (SHOW CALCULATIONS) A 31.9 g mass of a noble gas occupies a volume of 17.9 L at standard temperature…

A: The noble gas is Argon (Ar).

Q: A 1.00 liter solution contains 0.43 M potassium cyanide and 0.56 M hydrocyanic acid. If 0.14 moles…

A: Here 0.14 moles of Ca(OH)2 is added to 1L solution containing 0.43 M KCN and 0.56 M HCN. We have to…

Q: Step 3: Now let's focus on the dienophile. The dienophile is the electrophile in the Diels-Alder…

A: Diels Elder reaction is proceed by the reaction between diene (compound with double bond) and…

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A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: Hybridization of PS2Br2-

A: Hybridization is the process of mixing of orbital of different shape ,size and slightly different…

Q: Rotation Handle Benzene Ring Arrow Text Acyclic Chain 1 O O 1 2 3 O O O O O 4 O O O O O O O O 5 O O

A:

Q: 10) By analyzing the starting material and the product(s), the following reaction is an example of…

A: The alkyl halides are the compound which is compound of hydrocarbon and at least one halide group.…

Q: Which fatty acid would you expect to be have the lowest melting point?

A: given find out the lowest melting point of fatty acid

Q: How many cm2 are there in 9.7 in2 ? (HINT: 2.54 cm = 1 in)

A: given cm2 are there in 9.7  in2

Q: 6 GRAMS OF UREA IS DISSOLVED IN 2 LITERS OF WATER.  What is the molecular weight of urea?

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Q: Racemic, Relative and Absolute flags are types of: O Drawing Elements Tool. Stereochemical Symbols.…

A: Racemic, Relative and Absolute flags are types of :  Stereochemical Symbols.

Q: Which of the following alkenes is the least stable? 0 0

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Q: how and why did you multiple 10 pounds by 453.592

A: During calculation first of all we have to convert the unit of a physical quantity to a single unit.…

Q: Which one of the following two ionic compounds would you predict will have the lower melting point?…

A: Higher the lattice energy,higher will be the melting point. Lattice energy is inversely propirtional…

Q: solve

A: Part 1: The lipid can be classified as WAX. Because it is a very long chain formed simple ester…

Q: Row A. B. C. D. Use the following information to answer questions 38 and 39. A Sample Titrated with…

A: The solution is given below -

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Q: Determine the pH of the solution that results from mixing 0.100 mol of HCl with 0.400 mol of NH3.…

A: #(a):  Moles of HCl taken = 0.100 mol Moles of NH3 taken = 0.400 mol

Q: Sea water contains an average of 1127 ppm of Nations (At. Mass = 22.9 g/mol). Calculate the…

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Q: An ioinc compound will --------  if the ---------  increases, but if the compound's solubility…

A: Solubility:- it is the process of dissolving the solute into the solvent to create a solution.…

Q: How did you get 0.0000264

A: During calculation unit conversion is very important. We have to make the unit of a physical…

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A: A question based on analytical process that is to be accomplished.

Q: 1. Which does not belong to the group?* Bi⁺³ Sb⁺² Sn⁺² As⁺³   2. Which does not belong to the…

A: A question based on periodic table that is to be accomplished.

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Q: Complete the reaction map by providing the major product. #2 SOCI # 1 OH CH3CI KMnO₂ PDC N -NH₂ OH…

A: #1: The starting organic compound is a secondary alcohol, where the C of -C-OH is attached to two…

Q: 4. Which of the following potential energy diagrams could represent the reaction of N₂O(g) and…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".