Discuss the importance of keeping a laboratory notebook (logbook).

Q: Enter electrons as e". The following skeletal oxidation-reduction reaction occurs under basic condit...

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Q: Can anyone please help me with to solve this problem?

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Q: In 1909, a team of British scientists led by Ernest Rutherford, carried out the Gold Foil Experiment...

A: Gold Foil Experiment helped to determine the arrangement of particles in the atom.

Q: conc. H2SO4 180 °C Но

A: The reaction given is,    

Q: Convert 46.8°C to degrees Fahrenheit and kelvin

A: Degree celsius, kelvin, Fahrenheit all these are units for temperature measurements.  1) to convert ...

Q: True or False Diluting the solution by adding more solvent will reduce the effect of colligative pr...

A: Given: Diluting the solution by adding more solvent will reduce the effect of colligative properties...

Q: True or False At 25C, a solution of 40% methanol and 60% toluene will have a vapor pressure higher ...

A: Colligative properties are those properties which depends on amount of solute and doesn't depends on...

Q: (Q76) Propane combustion results in the production of carbon dioxide and water vapor according to th...

A: We have to predict the rate of reaction.  

Q: Write the skeletal structure of any alcohol. What is the major intermolecular forces (IMF) found in ...

A: In alcohols, the hydroxy functional group (OH) is attached with the alkyl group.

Q: 7. What needs to be done to make the following reaction proceed? но он A) Heat the reaction. B) Add ...

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Q: What volume of a 0.159 M barium hydroxide solution is required to neutralize 17.5 mL of a 0.390 M hy...

A: Barium hydroxide reacts with hydrochloric acid, to form barium chloride and water. The equation for ...

Q: bectroscopy, the remaining UV light t max of coffee is at 272-274 nm. atements are correct. ement is...

A: UV spectroscopy is a powerful analytical technique to determine the optical properties (transmittanc...

Q: The dissociation of a salt in water to from an aqueous solution is called enthalpy of solution, AHol...

A: 25. The dissociation of a salt in water to from an aqueous solution is called enthalpy of solution. ...

Q: Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. If no reaction...

A: The reaction between hydrochloric acid (aq) and barium carbonate (s) is, 2HCl(aq) + BaCO3(s) --->...

Q: (Q78) Consider the following rate law: Rate - k (A)[B]?(D] Select all the true statements listed bel...

A: The rate law of the reaction given is, => Rate = K [A] [B]2 [D]  

Q: The difference between the working principle of both: UV - IR - NMR - MS

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Q: 2. You want to synthesize a polymer using following chemicals. What is a base unit of the polymer? H...

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Q: 1. What are the parts of the chemical hood and biosafety cabinet including the functions. Include al...

A: Explanation - Fume hoods and biosafety cabinets are two common pieces of lab equipment that can grea...

Q: Pyrrole acylation Explain with mechanisms the formatiom of both products and also explain why these ...

A: We have to predict the mechanism of formation of products and reason for the proportion.  

Q: The heat of the solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH₄NO₃ is added ...

A: Heat of the solution of ammonium nitrate = 26.2 kJ/mol Mass of ammonium nitrate = 5.368 g Volume of ...

Q: if you wanted to extract 15mL of an aqueous layer, why wouldn’t you want to use 45mL of the organic ...

A: The technique which is used to separate the organic compounds from aqueous is called "Differential E...

Q: Be sure to round to the correct number of significant figures. Exp [N2O4]0     [NO2] [N2O4]     [N...

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Q: 5. For the chlorination of ethane, represented by the equation: CH;CH3 + Cl2 + hv→ CH;CH2CI + HCI, t...

A: Initiation reaction  is the step of the reaction where initiator is formed .At propagation step reac...

Q: A certain reaction is first order in N, and second order in H,. Use this information to complete the...

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Q: Which compound changes the pH value of water the least? O H2CO3 O H3PO4

A: Given : We have to tell which compound changes the pH least .   

Q: Determine the unknown (Abs-0.812) if the absorption of the standard are the following: Standard 1, A...

A: The data of absorbance v/s concentrations is given. And the absorbance of the unknown sample given i...

Q: 22. How many Pop TartsM are needed to convert 1,000.0 g of water at 20.0°C to 100.0°C? One Pop Tart™...

A: Given : Mass of water = 1000g  

Q: ied Irue or False. mount of caffeine was influenced by oncentration of caffeine is dependen Both sta...

A: Water temperature can have a significant impact on caffeine content due to the fact that caffeine is...

Q: Hess's Law: Question #6 Use Hess's Law and the three reactions, below, to calculate the standard ent...

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Q: Match the colligative property is applied in the given situation. Blake wants to cook macaroni fast ...

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Q: when aqueous solutions of potassium hydroxide and hydroiodic acid are combined. (Use Ht instead of H...

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Q: What is the structure of the conjugate acid for the reaction shown below? OK NH3 NH C OB OA

A: Conjugate acid if formed by the addition of a proton to the base.

Q: The heat of combustion for 1.00 mole of carbon to carbon dioxide is -410. kJ. How many kJ of heat wo...

A: Given : Moles of carbon = 1 mole  

Q: An ESI-MS positive ion mode mass spectrum of a protein gave neighboring peaks at 385.3 m/z and 577.5...

A: Given that, for a molecule in ESI-MS two neighbouring peaks are at 385.3 m/z and 577.5 m/z. Also giv...

Q: Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical ...

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements presen...

Q: Explain the difference between an enantiomer and diastereomer.

A: Enantiomers and diastereomers are the types of stereoisomers that is they orient their groups in 3D ...

Q: What is the purpose of chromic acid test? What is the evidence of positive result?

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Q: If each of these substances costs the same amount per kilogram, which substance would be the most co...

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Q: Which of the following molecule (s) will give a positive FeCl3 test? Why? OH HO HO НО Но A B Salicyl...

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Q: 3 has a density of 8.65 g/cm, what is its density in units object of kg/m ? If an

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Q: For the reaction A +2 B C under a given set of conditions, the initial rate is 0.150 M/s. Part A Wha...

A: We are given a reaction, A + 2B  → C and initial rate = 0.150 M/s. We are to find Δ[B]/dt under same...

Q: The rate of a certain reaction is given by the following rate law: 시[Nz][H2]° Use this information t...

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Q: Draw the structure and mechanism of the major organic product.

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Q: Kinetic Energy: Question #1 The gas nitrous oxide, N2O, is a dental anesthetic. a) Calculate the roo...

A: Given temperature = 27°C R = 8.31 (Kg-m2)/(Kmol.s2)

Q: pene in the gas phase. If the initial cyclopropane concetration is 0.0420 M , what is the cyclopropa...

A: Given: Rate constant = 3.36×10-5 s-1 The initial concentration of cyclopropane = 0.0420 M Time = 27...

Q: A closed cylinder contains 1.0 mole of ideal monatomic gas at 300 o C and 4.0 bar. Insulating the cy...

A: Answer: To change the state of a matter, a thermodynamic process is applied on the system and depedi...

Q: hok HBr

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Q: True or False Adding salt to water will decrease its freezing point, which will increase the time i...

A:      Let us take water as a ice.  Salt melts ice and helps keep water from re-freezing by lowering t...

Q: Calculate the pH of a 0.400M solution of phosphoric acid, H3PO4.     Ka = 7.11*10^-3

A: Given: Concentration of H3PO4 = 0.400 M And Ka of H3PO4 = 7.11 × 10-3  NOTE: Since only the 1st Ka o...

Q: at volume of a 0.137 M calcium hydroxide required to neutralize 20.9 mL of a 0.261M droiodic acid so...

A: Given : Molarity of Ca(OH)2 = 0.137M  Volume of HI = 20.9 ml