Explain water in a coffee-cup calorimeter

Assignment Help Chemistry
Reference no: EM13295787

When a 5.60 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 22.3 degrees Celsius to 41.6 degrees Celcius. Calculate delta H in kJ/mol for the solution process if the specific heat capacity of the solution is 4.18 J/g*K.

NaOH(s)=Na+(aq)+OH-(aq)

Reference no: EM13295787

Questions Cloud

Write an expression for the position of the mass : A mass of 0.25 kg is attached to a horizontal spring with a spring constant of 4.0 N/m. Write an expression for the position of the mass as a function of time
Explain what will the final temperature of the hg be : Between 0 degrees Celsius and and 30 degrees Celsius, mercury has a specific heat of 0.138 J/g*C. If 200 J of heat are removed from 100 g of Hg at 20 degrees Celsius, what will the final temperature of the Hg be
Health care workers to model mental-physical and spiritual : How realistic is it to expect health care workers to model mental, physical, and spiritual health? If Americans tend to be overweight, underactive workaholics who experience burnout, why should health care workers be any different?
Caculate the value of the daain source resistance r ds : An enhancement type nmos transistor with Vt = .7 V conducts iD= 100 micro A .. when V GS = V DS = 1.2 V . Find the value of i D for V GS = 1.5 V and V DS = 3V . caculate the value of the daain source resistance r DS for small V DS and V GS = 3.2 V
Explain water in a coffee-cup calorimeter : When a 5.60 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 22.3 degrees Celsius to 41.6 degrees Celcius.
Compute the constant angular acceleration of the wheel : A rotating wheel requires a time t = 4.32s to rotate 37.0 revolutions. What is the constant angular acceleration (rad/s2 of the wheel
What is expected return of following three-stock porfolio : Currently the risk free return is 3 percent and the expected market rate of return is 10 percent. What is the expected return of the following three-stock porfolio?
Litigation process-alternative dispute resolution : Describe the steps in the litigation process and compare them to a form of alternative dispute resolution (ADR). In which cases would ADR be the preferred form of dispute resolution?
A decision of a privately held company to go public : A decision of a privately held company to go public

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the electron in a hydrogen atom occupies

The electron in a hydrogen atom occupies a 6p orbital. What is the longest wavelength of light that can be emitted by this atom? Give answer in nanometres, nm

  Explain the first ionization energy of the halogen

Who does the first ionizaiton energy of the alkali metal in a given period compare with the first ionization energy of the halogen in the same period. What is the result in terms of how these elements tend to react with each other

  Force of water hitting a concrete cylindrical pole

How do you calculate the force of water hitting a concrete cylindrical pole. The velocity of the water is 2 ft/s, the depth of the water is 10 ft, and diameter of the pole is 3 ft. So what would be the total force exerted on the pole by the water?

  Define the antifreeze ethylene glycol

How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator containing 6.50 L of water if the coldest winter temperature in your area is -20°C?

  Explain hydrochloric acid forms a precipitate

You are given an unknown sample that when treated with hydrochloric acid forms a precipitate. After decantation, you add boiling water to the solid. All of the solid disappears.

  What is the surface area of catalyst

a monolayer of N2 molecules (effective area 0.165 nm2) is adsorbed on the surface of 1.00 gm of Fe/Al2O3 catalyst at 77K,the boiling point of liquid nitrogen. Upon warming the nitrogen occupies 2.86 cm3 at 0 degree celsius and 760 torr. What is th..

  What happened to the volume of the sample

the density of plutonium metal is 19.84 g/cm3 , and the density of plutonium (IV) oxide is 11.46 g/cm3. over a period of 7-10 years, a 2.5-kg sample of plutonium metal stored at Los Alamos National Laboratory in New Mexico was converted to plutoni..

  What is molality of solution of sugar

What is molality of a 1.22 M solution of sugar (C12H22O11)? The density of the solution is 1.12 grams/ml 2- Which of the following in each pair with be more soluble in water?

  What percent of the acid is dissociated

If the acid dissociation constant, Ksuba, for an acid HA is 8 x 10^-4 at 25 degree C, what percent of the acid is dissociated in a 0.50 M solution of HA at 25 degree C?

  Explain a solution is prepared by mixing of naocl

A solution is prepared by mixing 500. mL of 0.10 M NaOCl and 500. mL of 0.20 M HOCl. What is the pH of this solution? [Ka(HOCl) = 3.2 ? 10-8]

  Define what is the new pressure in atm of the sample

A sample of a gas in a piston/cyclinder apparatus occupies 30.2 mL at 1.08 atm and 22.2°C. If the volume of the sample is increased to 67.3 mL and the temperature changes to 30.9°C, what is the new pressure, in atm, of the sample

  State a sample of the unknown complex is analyzed

A sample of the unknown complex is analyzed and has an absorbance of 0.528. What is the molar concentration of Cu^2+ ions in the unknown solution?

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