Explain entropy of the copper and the water

Assignment Help Chemistry
Reference no: EM13223368

A block of copper of mass 500g and initial temperature at 293 k is in thermal contact with an electric heater of resistance 1.00kohm and negligible mass. a current of 1 A is passed for 15 s. calculated the change in entropy of the copper taking C=24.4j/kmol. the experiment is then repeated with the copper immersed in a stream of water that maintains its temp at 293. Calculate the change in entropy of the copper and the water in this case.

Reference no: EM13223368

Questions Cloud

Describe what your role would be in a network organization : Describe what your role would be in a network organization, and the capabilities and roles of other firms you would want in your network.
What is the current state of the quiznos brand : What is the current state of the Quiznos brand and what is Quiznos's market share compared to Subway, and how much market share is available in the sandwich segment globally?
Which of sectors of the economy would be most impacted : Which of the following sectors of the economy would be most impacted by technological developments?
What rate of return did he receive on the investment : An investor purchased 100 shares of Omega common stock at $100 a share plus $20 commission. He held the stock for nine years. For the first four years he received annual end-of-year dividends of $4 per share. For the next five years he received an..
Explain entropy of the copper and the water : the experiment is then repeated with the copper immersed in a stream of water that maintains its temp at 293. Calculate the change in entropy of the copper and the water in this case.
What is the yield-return on the bond : A corporate bond has a face value of $10,000 with a bond rate of 6%. The interest of the bond will be paid quarterly. The bond will mature in 10 years. If the bond is sold at $7,000 on the market, what is the yield (return) on the bond
What is annual equivalent value of a geometrical increase : What is the annual equivalent value of a geometrically increasing series of payments which has first-year base of $30,000 increasing by 8% per year for 10 years with an interest rate of 12% compounded monthly
Explain what s the enthalpy of vapourisation of the liquid : The vapour pressure of a liquid in the temperature range 200K to 260K was found to fit the expression: ln (P/Torr)=18.361-3036.8/(T/K) What s the enthalpy of vapourisation of the liquid?
When to use the present equivalent cost comparison : If the firm only needs the machine for 5 years. Assuming a salvage value will be $8,000 for Machine A, $15,000 for Machine B at the end of 5th year, which alternative should be selected when using present equivalent cost comparison

Reviews

Write a Review

Chemistry Questions & Answers

  Find delta h

Find delta H for HCl(g) given H-Cl bond enthalpy = +431 kJ·mol-1;

  How many grams of glucose of the final solution

How many grams of glucose are in 100. rm mL of the final solution?

  The half-life of this reaction assuming first-order kinetics

What is the half-life of this reaction assuming first-order kinetics?

  How much hcl gas can be produced

How much HCl gas can be produced at STP by reacting 198 g of NaCl with excess H2SO4?NaCl + H2SO4 ! NaHSO4 + HCl.

  What are the partial pressures of each of the reactants

Suppose that an atmospheric chemist combines 165 of methane at STP, 870 of oxygen at STP, and 56.5 of at STP in a 1.8 flask.

  State how many molecules does the patient ingest

patient if the recommended dose is 6.50 mg of aspirin per Kg of body weight? How many molecules does the patient ingest?

  What is the number of chlorine atoms

What is the number of chlorine atoms are in 5.0 g chloral hydrate?

  State how many grams of caoh must be in the solution

How many milliliters of 0.121 M H2SO4 are needed to neutralize 0.220g of NaOH? If 42.5mL of 0.220 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?

  What is the new volume of the gas

The volume of a gas is 93 mL when the temperature is 91 C. if the temperature is reduced to 0 C without changing the pressure, what is the new volume of the gas

  Calculate the molecular weight of the unknown acid

Calculate the molecular weight of the unknown acid.

  Explain what is the concentration of ba(oh)2 solution

What is the concentration of Ba(OH)2 solution if 22.0 mL of 0.200 M H3PO4 is needed to neutralize

  Find the mass of the unknown atom in the molecule

A particular diatomic molecule which contains H exhibits a 16.95 cm^-1 spacing between its rotational lines and bond length of 141.5 picometers. Determine the mass (in amu) of the unknown atom in the molecule.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd