determining the melting point of a substance, it is needed to continuously stir the water bath while heating and cooling the sample. Whys is it important to continuously stir the water bath? What will happen

Q: A chemist determined by measurements that 0.045 moles of calcium participated in a chemical reaction...

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

Q: 1. What are the two reactants used to synthesize the Aspirin? 2.  Why is water added to the reactio...

A: Aspirin is synthesized through the esterification of salicylic acid by the acetic anhydride.The reac...

Q: Explain the meaning of the following: (a) Chiral carbon (b) Enantiomers (c) Esterification

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Q: 问题12 Which of the following is the C5 epimer L-glucose? 手手華華 HO HO но. HO HO H OH H OH H. OH HO H HO...

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Q: 2. Assign the absolute (R or S) configuration to each stereocenter in the molecules depicted below. ...

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Q: After completing part II of the experiment, a student uses her calibration curve to find that the eq...

A: We would first write a reaction between Fe3+ and SCN- to form product [FeNCS2+]  , then we would dra...

Q: One way of separating oxygen isotopes is by gaseous diffusion of carbon monoxide. The gaseous diffus...

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Q: Which one hardness type that remain after boiling process. * Temporary hardness. O Permanent hardnes...

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Q: The decomposition of N2O5 to NO2 and O2 is first order, with a rate constant of 4.80 x 10-4/s at 45°...

A: Calculate final concentration and time....

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

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Q: EXERCISE 3.2 Predict the structures of the following ions. Include a description of distortions from...

A: Dear student, since you have asked a question which has multiple subparts according to guidelines we...

Q: 2. Explain how Lavoisier's Law of Conservation of Mass supports Democritus' theory that atoms cannot...

A: Please find your solution below : Atom is the smallest unit of matter. It is defined as the basic bu...

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

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Q: Calculate the pH of the following solutions 0.0040 M Ba(OH)2

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Q: Use the Ref Match the orbital drawing on the left to the type on the right. Clear All Submit Answer ...

A: Please find your solution below : In atomic theory, orbital is a mathematical function called wave f...

Q: Calculate the concentration of all ions present in each of the following solutions of strong electro...

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Q: The carbon chlorine bond in chloromethane (CH3Cl) has a bond distance of 178 pm.  Assuming a 100% io...

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Q: What is the pH of a buffer made of 1.4E-1 M CH3COOH(aq) and 4.6E-1 M NaCH3COO(aq)? Ka for CH3COOH = ...

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Q: Gay-Lussac's Law 1. Determine the pressure change when a constant volume of gas at 1.00 atm is heate...

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Q: Assuming that you start with 2.5200 grams of salicylic acid, calculate how many grams of Aspirin you...

A: Salicylic acid reacts with acetic anhydride to form aspirin and acetic acid. The equation for the ba...

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 286.0 g sample ...

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Q: Show a possible mechanism for the following reaction CN CO,Me CN.

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Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): C...

A: Given values -> Molecular formula = CH3COOH Moles of carbon = 89.1 mole  

Q: 1. Salen is an important lijand in chemistry research. Its molecular geometry tetradenturte is show ...

A: Introduction :  In coordination chemistry ligand can be defined as the an ion or molecule that binds...

Q: A2 (g) + B2 (g) ⇌ 2 AB (g) If the value of Kc for this reaction is 116.4, and the initial concentra...

A: Equilibrium  constant is the ratio of product of concentration  of product  to the product of concen...

Q: 1. CH3-CH2-0 (d) 2 CH3-CH2-c-o-CH2-CH3 2. HCI (е) Δ CHз —с—сн2 —с—он ОН (f) + Br2

A: Given  data :-

Q: a. Write the electron configuration for Rb*. (Express your answer as a series of orbitals, in order ...

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Q: 2. Draw the optical isomers of CH3-CHOH-CHOH-CH3 . INDICATE the absolute configuration of each chira...

A: Optical isomers of butane 2,3 diol.

Q: 2 3. NEXT > Fill in the ICE table with the appropriate value for each involved species to determine ...

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Q: Synthesize the folowng compnd stavting fom bezere (3 (A) (B) CHs Hz N

A: Organic reaction mechanisms:

Q: Give the formula for the following compounds. a. diphosphorus tetrafluoride b. sulfur dichloride C. ...

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Q: (c) How many stereoisomers are present in tartaric acid? Also draw their structures.

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Q: (b) What do you mean by enzyme catalysis? Derive Michaelis-Menten's equation?

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Q: Which beaker contain a bas in PH 1 PH 6 PH 7 PH 12 1) 2) 3) 4) O A. Beaker 1 and7 O B. Beaker 2 O C....

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Q: write the rate law for the following reactions. (assume each reactions follow an elementary rate law...

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Q: 2. A gas occupies 900.0 mL at a temper 3. A gas occupies 1.00 L at standard ten

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Q: Discuss whether your data in Part C (Quantitative Analysis of Salt Solutions) appears to follow a li...

A: Conductivity of a solution is related to concentration by the equation : λm = κ/C where λm is molar ...

Q: Question 3 Consider the following reaction, which is initially at equilibrium. What happens when HX ...

A: given equilibrium reaction,  HX(aq) ⇔ H+(aq) + X-(aq)  

Q: Determine the (H*]. [OH-], and pH of a solution with a pOH of 7.25 at 25 °C. [H*) = 1.8 x10-7 = [-HO...

A: Given that  POH= 7.25  We have to determine [H+] , [OH-]  and PH of a solution  Complete solution is...

Q: At a certain temperature, the equilibrium constant K for the following reaction is 1.3: CL(e) + CHCI...

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Q: A buffer is made using 100.0 mL of 0.100 M CH3CH2COOH (propanoic acid) and 100.0 mL of 0.100 M NaCH3...

A: Given, moles of propanoic acid in solution - (100 mL × 0.100 M) = 10 mmol. moles of sodium propanoat...

Q: 18 ic weights are based on the Atomic Elements 1995 publishedby IUPAC Не 13 14 15 16 17 4.003 6. 10 ...

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Q: (a) Discuss the stepwise mechanism for the hydrogenation of alkenes using Willkinson's catalyst by t...

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Q: A certain reaction is known to proceed slowly at room temperature. Is it possible to make the reacti...

A: Answer: Rate of the reaction depends upon activation energy, higher the value of activation energy, ...

Q: To make a buffer from a mixture of HF and NaF that has a pH = 3.35 what must the ratio of (F^-/HF) b...

A: a buffer of a weak acid and its conjugate base, HF and NaF. given, pH = 3.35 Ka = 7.2 x 10-4

Q: In your own words, explain the relationship of wavelength and frequency.

A: Using Einstein's  energy relation we can derive the relation between frequency and wavelength

Q: A chemist determined by measurements that 0.015 moles of gallium participated in a chemical reaction...

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Q: The indicator of Moher regent is. О Кcro4. KCrO4. O KMN04.

A: What indicator used in Moher reagent ?

Q: Determine the Kb for cocaine (a base). To do this, construct an ICE table to determine concentration...

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Q: 44. Select the answer choice that correct identifies if the bonds formed would be nonpolar covalent,...

A: 1) Ionic bonds : bonds that are formed by complete transfer of electrons.Generally formed between a ...