To determine the melting point of aspirin, Gerald placed the sample in a capillary tube tied to a thermometer and heated them in an oil bath. Which constitute the system and the surroundings?  a.system: aspirin, thermometer, oil, alcohol lamp; surroundings: Gerald b.system: aspirin; surroundings: thermometer, oil, alcohol lamp c.system: aspirin, thermometer, oil; surroundings: alcohol lamp  d. system: aspirin, thermometer; surroundings: oil, alcohol lamp

Q: uestion 8 For strong electrolytes, such as hydrochloric acid, the molar conductivity decreases sligh...

A: The answer is as follows:  

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A:

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A:

Q: How many moles of NaOH are present in 12.5 mL of 0.210 M NaOH?

A:

Q: 4 5.00 5.00 4.00 6.00 6. 3.00 7.00

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for ...

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A: Given,  Rubidium has two naturally occurring isotopes : 85Rb and 87Rb Relative abundance of 85Rb = R...

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A:

Q: interconversion of energy between two forms: heat alu 13. The First Law of Thermodynamics states tha...

A: 13.  The First Law of Thermodynamics states that energy can be created or destroyed. Answer :  The F...

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A:

Q: 13 4 10 5.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and...

A: Here an organic compound of mass 5.5 gram containing carbon and hydrogen , perhaps containing oxygen...

Q: Question 11 In the home-based experiment involving reaction between the iodine solution and ascorbic...

A: The given reaction is between iodine solution and ascorbic acid. The reaction is, I2 + C6H8O6 ---&gt...

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A: Empirical formula is defined as the simplest whole number ratio between the atoms of the molecule. 

Q: How many grams of PbBr2 will precipitate when excess NH4B solution is added to 54.0 mL of 0.566 M Pb...

A:

Q: It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the w...

A: Given: Mass of KF hydrate i.e. KF·nH2O = 31.43 g. And the mass of anhydrous KF after heating = 19.40...

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A:

Q: Which of the following statement/s is/are TRUE? Electrochemistry deals with the physical and chemica...

A:

Q: The oxidation of ammonia produces nitrogen and water via the following reaction: 4NH3(g) + 302(g) → ...

A: The correct option is:  

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A: Given: Volume of buffer = 250.0 mL. Concentration of weak acid available = 0.51 M Concentration of N...

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A: Molarity is defined as the number of moles of solute dissolved per litre of solution.

Q: The Tietjen and Moore paper gives the following set of 8 mass spectrometer measurements on a uranium...

A:

Q: 03 CNS Explain acid/base strength of A or B

A: The compound which remove easily H+,this compound is more acidic comparetivly others In case of com...

Q: Calculate the number of moles of chlorine in 5.25 g of MgCl2? O 0.0879 mole chlorine O 0.0110 mole c...

A:

Q: How many moles of oxygen are needed to fully react 837.4 grams of C8H18? * Answer: Round off your an...

A: Mass of C8H18 = 837.4 g  Molar mass of C8H18 = 114.23 g/mol  Molar mass of O2 = 16 g/mol  Moles of O...

Q: Consider the reaction: N204(g) 2 NO2(g). What is AS° at 25 °C? AHP, KJ mol-1 AGf, KJ mol-1 NO2 33.85...

A: T = 25 0C = 298.15 K (Temperature in K = Temperature in 0C + 273.15 )   For NO2 : ∆Gf° = ∆Hf° - T∆S°...

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A:

Q: Consider the reaction aA + bB dD + eE C = catalyst %3D The rate law is Rate = K[A]°[B]°[C]$ %3D Whic...

A: aA + bB +C -------> dD + eE  The rate law of a reaction represents  Rate is directly proportional...

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A: The negative value of slope is rate constant.  Or Rate constant =  - (slope)                        ...

Q: Provide the proper IUPAC or common name for the following compound.

A:

Q: The standard cell potential of the reaction is 1.10 V for the cell Zn (s)/Zn²+//Cu²+1Cu (s) If the Z...

A: Answer: Nernst equation can be used to calculate the cell potential.

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Q: Which of the following glassware is best used for slow dispensing of 47.00 mL of a solution?

A: Different experiment have different requirement

Q: The following problem requires TWO reaction steps in a row. 1. Starting with the given substrate an...

A: The answer is as follows:  

Q: finish the reaction

A: The answer is as follows:

Q: Consider the reaction below. Given the equilibrium concentration of each species, what is the equili...

A:

Q: Codeine can treat pain and cough but has a high risk for addiction and dependence. Which of the foll...

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Q: What types of intermolecular forces are occurring between sodium dodecyl sulfate and water ?

A: sodium dodecyl sulfate structure is  CH3(CH2)11OSO3- Na+  

Q: H* HO OH

A: At first -C=O,take H+,than -OH attack to the carbonyl group. -OH is not good leaving group,so it tak...

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A: The transfer of liquids and solution uses various types of apparatus and instruments depending on th...

Q: Question 17 The amount of substance formed or consumed at the electrodes is proportional to the quan...

A:

Q: Question Completion Status: QUESTION 2 Match the hydrogens on the structure below to the appropriate...

A:

Q: Create 3 different lewis structures that are not resonance structures for a compound. Note that the ...

A: The three Lewis structures fulfilling all the requirements are drawn in the following step. 

Q: Which of the following is/are TRUE about Galvanic cell? I. The Gibbs Free Energy of the cell is nega...

A: Answer: Galvanic cell is an electrochemical cell in which redox reaction takes place.

Q: QUESTION 1 What are the standard units of density for a solid | and a liquid

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Q: 1. the sourness of lemon 2. 1.5 L of Cola 3. weakened lungs caused by mercury inhalation 4. mixing c...

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Q: A 4.50-mol sample of HI is placed in a 1.00-L vessel at 460°C, and the reaction system is allowed to...

A: Given,  Initially moles of HI = 4.50  And volume= 1.00L  At equilibrium moles of H2 and I2 = 0.343

Q: How do we express the independent variable in Kolrausch plot? Reciprocal concentration Square root o...

A: Dr

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A:

Q: light Bra b) Lindlar's

A:

Q: The molar heats of fusion and vaporization of ethanol are 7.61 and 26.0 kJ/mol, respectively. Calcul...

A:   Given Data : Molar heats of fusion ethanol ,                  Q 1   = 7.61 kJ /mol Molar heat vapo...