Imagine you were doing a calorimetry experiment to measure the molar enthalpy change for dissolving ammonium chloride (NH4Cl(s)) in water, H2O(l) to create an aqueous NH4Cl (aq) solution.
What would you need to measure in order to calculate the molar enthalpy in kJ/mol?
Explain if the coffee cup calorimeter is an open, closed or isolated system.
How is the 1st Law of Thermodynamics applied when we do calculations with the coffee cup calorimeter? What assumptions do you make?
If the theoretical molar enthalpy of solution for NH4Cl(aq) is +14.7 KJ/mol, what mass of NH4Cl is needed to decrease the temperature of 100.0g of water by -20.0oC?
Write a thermochemical equation for this process, including the energy term.
What would be the molar enthalpy for the reaction used to produce ammonium chloride, as shown below? Use the enthalpies of formation (on the last page) to find this.
NH3(g) + HCl(g)→ NH4Cl(s) .
Answers: 2
Chemistry, 22.06.2019 17:00, emma3216
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
Answers: 1
Chemistry, 23.06.2019 01:30, mindofnyny
Which is an example of a highly unstable isotope that is often used in fission reactions?
Answers: 1
Chemistry, 23.06.2019 06:00, mustafajibawi1
If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!
Answers: 1
Imagine you were doing a calorimetry experiment to measure the molar enthalpy change for dissolving...
Health, 17.02.2022 20:20
Mathematics, 17.02.2022 20:20
Mathematics, 17.02.2022 20:20
Mathematics, 17.02.2022 20:20
Business, 17.02.2022 20:20