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Q: What advantages and disadvantages does water have as a recrystallization solvent?

A: Recrystallization is used to purify chemicals by dissolving both impurities and a compound is dissol...

Q: 1. Write a balanced chemical equation, including physical state symbols, for the ロ→ロ decomposition o...

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Q: A charge of 7.15 mC is placed at each corner of a square 0.450 m on a side. Part A Determine the mag...

A: Apply Coulomb's law, F = Kq1q2/ r2

Q: MG3N2

A: Mg3N2 is a compound which consist magnesium and nitrogen atom and its chemical name is magnesium nit...

Q: Combustion of hydrocarbons such as pentane (C,H12) produces carbon dioxide, a "greenhouse gas." Gree...

A:

Q: 2. Why does grapefruit juice left in an open can taste metallic?

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out o...

Q: Rank these in order of increasing reactivity in an SN1 reaction

A: Answer: C) I < II < III

Q: . What factors can affect a solute's Rf value in thin-layer chromatography? 2. Why is it necessary ...

A: Answer - According to the question - Rf values and reproducibility can be affected by a number of di...

Q: moles

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Q: 0.5 Y 0.67

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Q: Compare the following two elements, identified by their electron configurations: A- [He]2s 22p 5 B- ...

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the ele...

Q: 1. Provide a systematic name for each of the following compounds

A: Given; structure of molecules

Q: Identify which of following alkyl halides undergoes solvolysis most rapidly. Br II Br II Br

A: We are given three alkyl halides and asked which alkyl halide undergo solvolysis faster. 

Q: Philosophers and scientists came up with the early ideas of particles. Democritus believed that matt...

A: Matter is made of small building blocks called atoms.

Q: How many grams of water must be used to dissolve 240g of glucose (C6H12O6) to prepare a 1.67 x 10^-3...

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Q: A student prepares a stock solution of BaF2 by dissolving 50.00g of a BaF2 in 1.00L of water. An add...

A: Given data,Mass of BaF2=50.00gVolume of water=1.00LMolarity of desired solution=0.100MVolume of desi...

Q: 4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think about galyanized steel)

A: Q4) Why do they put magnesium rods in a steel hot water heater? (Hint: Think about galvanized steel....

Q: AH° = ? %3D

A:

Q: 1. What is the mass concentration of water vapor (g H20 per m3 of air) in a liquid-water cloud at a ...

A: Saturation water vapor pressure, P at 273 K = 611.6 Pa 1 Pa = 1 kg/m.s2 1 J = 1 kg.m2/s2. Molar mass...

Q: Methane combustion provides a significant fraction of the world's primary energy, and is used for ho...

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Q: 6.A fuel is burned with 50% excess air and the combustion characteristics of the fuel oil are simila...

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Q: Question 3 What mass of Cu(NO 3) 2 can be prepared from the reaction of 3.50 grams of copper with 10...

A: In multiple questions, we solve only the first question according to the Bartleby Guidelines. First,...

Q: 3. 4Fe s) Calcu

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as...

Q: why is it important to apply the percent volume and percent retrieval in separation of mixtures expe...

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Q: The equilibrium constant for the gas phase reaction N2 (g) - 3H2 (e)2NH3 (2) is Keq =434 x 10-3 at 3...

A: For any chemical reaction, the effect of temperature on the direction of equilibrium will depend whe...

Q: How is a chemical sunscram prepared and is it related to Adol? e 6:38 A

A: Sunscreen ( sunscram is a typo) are used to save our skins from harmful UV rays present in sunlight....

Q: Please write the electron configuration of the following elements: Copper Sodium Nitrogen

A: Given elements: Copper  Sodium Nitrogen The distribution of electrons or electronic configuration of...

Q: 211.5g of glucose is dissolved in enough water to make 635.0ml of solution. (Molar mass of glucose i...

A: Given, Note: 1000 mL = 1 L Mass of glucose = 211.5 g Volume of the solution = 635.0 mL = 0.635 L Mol...

Q: 15 Gaseous ethane (CH;CH3) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO...

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Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09) S...

A:     Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is...

Q: Identify the isomeric relationship between the molecules of each pair depicted below.  Your choices ...

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Q: Which of the following structural formulas represent identical compounds and which represent constit...

A: Answer: Compounds those have similar molecular formulas but different structural formulas are called...

Q: The unit cell for tin has tetragonal symmetry, with a and blattice parameters of 0.5 and 0.318 nm, r...

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Q: What is the pH of a buffer solution that is 0.350 M ethylamine and 0.200 M ethylammonium chloride, a...

A: As you have mentioned to answer question 4 only so i answered only question 4.Thank you. 

Q: Theoretical yield of chemical reactions Aqueous hydrobromic acid (HBr) reacts with solid sodium hydr...

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Q: A 13.8 mL solution of 0.100 mol L-1 HCl is titrated using 0.150 mol L-1 NaOH. What is the pH of the...

A: An acid is a substance that can enhance the concentration of hydrogen ions pertains to a solution to...

Q: Flow Chart for the Determination of Group I Cations Ag', Pb, Hg, + 6 M HCI I centrifuge Solid AgCl, ...

A: In qualitative analysis,cations are arranged in groups where each group share common reagent that ca...

Q: Copper(II)-ammonia system 1. Place 1 mL 0.1 M CuSO̟ into a test tube. Then, add 5 drops 1. 00 M NH, ...

A: Addition of excess ammonia, NH3 to copper(II) ion forms a complex compound that leads to a change in...

Q: Compare and contrast organic chemistry with inorganic chemistry. Give a definition of the two types ...

A: Inorganic chemistry - - > Inorganic chemistry deals with the compounds which are inorganic compou...

Q: Calculate the pH at the equivalence point when 15.0 mL of a 0.30M hydrochloric acid solution is titr...

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Q: If 0.251 grams of MgO were added to 24.8 mL of HCl (density = 1g/mL), use the graph collected below ...

A: According to the given graph,  Initial temperature of HCl solution, Ti = 19.41 oC. Final temperature...

Q: Carbon dioxide and water react to form methanol and oxygen, like this: 2 CO2(g)+4 H,O(g)→2CH;OH(1)+3...

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Q: Q7. What carbonyl compounds would you reduce to obtain the folowing alcohoa CHyOH

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly repos...

Q: 1  It is a mathematical expressions relating the concentration of reactants to the reaction rate ? ...

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Q: 4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think about galvanized steel.)

A: Q4)

Q: MeO2C, NaOMe MeO,C CO,Me HTOME OMe NaH Meo, OMe OMe OMe NH2 NH,OAc NaCl, DMF H+ -OMe NaBH;CN H2O, A ...

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Q: e AG for the reaction

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Q: Answer a, b, c,

A: Alkyl halides react with sodium alkoxide to form an ether by the Williamson ether synthesis. The rea...

Q: Draw a Newman projection for the conformation adopted by 2-bromo-2,4,4-trimethylpentane in a reactio...

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Q: Consider the following rate law expression: rate = k[A][B]. Which of the following is not true about...

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.