What is the purpose of the salt bridge in an electrochemical cell? To maintain electroneutrality To convert chemical energy to electrical energy To serve as a physical boundary To facilitate occurrence of a non-spontaneous reaction

Q: Your lab partner asks you to make 100 mL of a 1.50 M HCl solution for an experiment she would like t...

A: Please find the below attachment.

Q: A rock is placed on a balance and its mass is determined to be 20.140 g. When thesame rock is placed...

A: • The values provided in the question are:-  i) Mass of a rock, m = 20.140 g  ii) Initial volume of ...

Q: Indicate whether each of the following solutions is acidic, basic, or neutral: a. [H₃O⁺]= 2.0 x 10⁻...

A: There various parameters to know about acidity,basic and neutral.  Acidity means there must be H+ io...

Q: Q3.A/ The atomic model that is currently used is called:

A: There are t atomic models proposed by scientists till today.

Q: Questions: 1) Write a balanced chemical reaction between the KHP and the NaH and between sodium hydr...

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Q: POST-LAB QUESTIONS 1. Complete the table by naming each piece of glassware below. 250 ml Glassware 1...

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Q: explain the results of this experiment table 2    Test Tube Number Cobalt Chloride Concentration...

A: The concentration v/s absorbance data given is,   Test Tube Number Cobalt Chloride Concentrati...

Q: The skeleton of acetic acid is shown. Complete the structure by adding bonds and nonbonding electron...

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Q: Estimate the net force exerted on your eardrum due to the water above when you are swimming at the b...

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Q: The combustion of ethanol, C2H5OH@ to form carbon dioxide gas and water. What is the enthalpy of eth...

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Q: rignard reagents react with carbon dioxide. Give the product, after acid hydrolysis, of the reaction...

A: Given : We have to make product when phenyl magnesium bromide with carbon dioxide.

Q: The piperazine content of an impure commercial material can be determined by precipitating and weigh...

A: Given the mass of the sample containing piperazine = 0.3126 g  Balanced equation for the reaction of...

Q: Kc

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Q: Which of the groups below is capable of only hydrophobic interactions? a b c d e

A: The answer is as follows:  

Q: What is the concentration (M) of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 m...

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Q: Write the equation that shows how ammonia acts as a Brønsted-Lowry base in water. Express your answe...

A: Write the equation that shows how ammonia acts as a Brønsted-Lowry base in water.

Q: HI b)

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Q: Name th

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Q: Nitrogen and hydrogen react according to the reaction below to form ammonia: N2 (g) + 3 H2 (g) ⇌ 2 N...

A: the equilibrium concentration of NH3 can be calculated as

Q: The cell notation for the Galvanic cell is The Standard Reduction Potential are as follows: E°ca2*/c...

A: The cell given is Cd(s) | Cd2+ || I2 (s) | I-.  

Q: Calculate the pH for an aqueous solution that is 0.0150 M maleic acid (H2C4H2O4) (Ka1 = 1.2x10-2 and...

A: Maleic acid is diprotic acid

Q: The average life expectancy in the United States is 78.7 years. Assuming there are 365.25 days in a ...

A: Given that , average life expectancy of US is 78.7 years  And given  1 year = 365.25 days  Complete ...

Q: A reactant decomposes with a half-life of 149 s when its initial concentration is 0.312 M. When the ...

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Q: Use the law of conservation of mass to answer the questions. Consider a hypothetical reaction in whi...

A: According to the law of conservation of mass ; Total mass of reactants = total mass of products  "Ma...

Q: Part B The integrated rate law allows chemists to predict the reactant concentration after a certain...

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Q: .. Question 17 of 39 Submit What is the correct IUPAC name for the compound shown here? 2-3-5- 1- cy...

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Q: The rate of a certain reaction was studied at various T(K) k (s-1) temperatures. The table shows tem...

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Q: Let 9.642 g He, 9.768 g F2, and 9.218 g Ar be placed in a 19.2-L container at 75°C. What are the mol...

A: Given, Let 9.642 g He, 9.768 g F2, and 9.218 g Ar be placed in a 19.2-L container at 75°C. The molar...

Q: How do you visualize stereochemistry? What kind of methods and tricks do you use to visualize these ...

A: Stereochemistry definition :  

Q: Determine the heat involved when an 80.0 g ice at - 5 °C is converted to steam at 120 °C? Cr of ice ...

A: (1.)  Determine the heat required to raise the temperature of the ice from −5 0C to 0 0C : q1 = m × ...

Q: Calculate the velocity of a neutron whose de Broglie wavelength is 500 pm. Search for the mass of a ...

A: given :- de Broglie wavelength = 500 pm  to be calculated :- velocity of neutron

Q: an attempt to measure the effects of acid rain, researchers measured the pH (7 is neutral and values...

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Q: Aqueous sulfuric acid (H,SO,) will react with solid sodium hydroxide (NaOH) to produce aqueous sodiu...

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Q: Draw the three physical states of water (solid, liquid, and gas). Illustrate their positions and beh...

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Q: Consider the following reaction at equilibrium: 2NO₂(g) ⇌ N₂O₄(g) The ∆H° for this reaction is < 0. ...

A: We have to predict the direction of equilibrium.  

Q: All of the following points are written under the method section in a scientific paper, except: O a....

A: The correct answer about scientific paper is given below

Q: QUESTION 1 If 47.88 mL of distilled water at 90.2 °C is added to 47.93 mL of distilled water, in a c...

A: We have to predict the heat capacity of calorimeter.  

Q: or a particular reaction, AH = -93.8 kJ and AS = -156.1 J/K. Assuming these values change very littl...

A: Solution - According to the question - Given - ΔH° = -93.8kJ ΔS° = -156.1J / K = -156.1x 10^-3 kJ /K...

Q: you have 48.00 g. of K2CrO4, what volume of 0.1500 M BaCl2 solution is needed to completely react wi...

A: Molarity is defined as number of moles of solute divide by volume of solution

Q: (a) ŢLi + ? → 2He → 2;He (b) 14 C → 14 N+? (c) He ? + ¿n Al + 27 13 Не (d) 250 Cm → ?+g Sr + 4,n 38

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Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of ...

A: All atoms of all elements and charges should be balanced in a balanced chemical reaction.

Q: :ö: etermine the number of shared and unshared electrons in the structure. hared (bonding) electrons...

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Q: What is the correct systematic name for the compound shown here? CH3 CH3

A: 1. Select the principle carbon chain 2. Numbering 3. Naming (prefix + word root + suffix)

Q: CF3SO3H (aq) HCI

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Q: Acetylene and oxygen react to form carbon dioxide and water, like this: 2C,H,(g)+50,(g) → 4CO,(g)+2H...

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Q: A soultion is 5.00% by mass potassium sulfate. How many grams of this solution would be needed to su...

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Q: 5. A rectangular block of an unknown solid has a mass of 441.26 grams and measures 12.00 cm by 3.00 ...

A: Given, The mass of an unknown solid is 441.26 grams and measures 12.00 cm by 3.00 cm by 1.50 cm.  

Q: -moles of

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: NHTS Co(D-Porph) (2 mol%) OCH Cs,COs CH,OH; 40 °C; 24 h ÓCH, OCH trans cis

A: From the tosylated hydrazone derivatives carbene can be generated feasibly through nitrogen eliminat...

Q: My professor said the answer choice was A.) please explain why in detail. Which of the following so...

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