Compute the change in enthalpy for solution-making process

Reference no: EM13650338

When a 6.89-g sample of CaCl2 dissolves in 250 g water in a coffee cup calorimeter, the temperature rises from 22.0 to 26.9 °C. Calculate the change in enthalpy for this solution-making process. Express your answer in kilojoules per mole of salt. (Assume the solution has a density of 1.00 g/mL and specific heat of 4.184 J/g°C.)

Reference no: EM13650338

Questions Cloud

Determine the boys mass : a boy on a 2.2 kg skateboard initially at rest tosses a 7.5 kg jug of water in the forward direction. find the boy's mass

Explain how many grams of h2 gas are in the sample : A ballon is filled with H2 gas and has a pressure of 1.10 atm, volume of 10.2L, and a temp of 298 K. How many grams of H2 gas are in the sample

What is muzzle velocity when the spring reaches equillibrium : a spring with k=128 Nm is compressed to a distance 2.0 pastequillibrium and is used to project a ball with mass = 4 kgdirectly up. What is muzzle velocity when the spring reaches equillibrium

What is the most interesting in the hunger games : What is the most interesting while reading the book "The hunger Games" and explain why you like it and what makes it interesting.

Compute the change in enthalpy for solution-making process : When a 6.89-g sample of CaCl2 dissolves in 250 g water in a coffee cup calorimeter, the temperature rises from 22.0 to 26.9 °C. Calculate the change in enthalpy for this solution-making process

Define water contaminated by fatal levels of the pesticide : A certain pesticide is fatal to fish fingerlings at a level of 0.50 parts per million in water. A leaking metal can containing 5.00 kg of the pesticide was dumped into a stream with flow of 10.0 L/sec moving at 1 km/hr.

What the main message of justice is in antigone : what the main message of justice is in Antigone. There seem to be several ways to interpret the text, but I can not figure out the primary lesson concerning justice.

Determine what beat frequency does he observe : a student holds a tuning fork oscillating at 256 hz. he walkstoward a wall at a constant speed of 1.33 m/s. what beat frequency does he observe between the tuning fork and its echo

Work to required to strech a certain spring by an elongation : The work to required to strech a certain spring by an elongation of 4.00 cm to an elongation of 5.00cm is 30.5 J. (a)is the work required to increase the elongation of the spring from 5.00 cm to 6.00 cm greater than,less than or equal to30.5J?

User Account

All Pages