Homework answers / question archive / Answer questionsA)A gas expands and does PVNotePV_____x10____J work on its surroundings equal to 341 J

Answer questionsA)A gas expands and does PVNotePV_____x10____J work on its surroundings equal to 341 J

Chemistry

Share With

---

Answer questionsA)A gas expands and does PVNotePV_____x10____J work on its surroundings equal to 341 J. At the same time, it absorbs 118 J of heat from the surroundings. Calculate the change in energy of the gas. :  work means work done by a changing volume against constant pressure. Enter your answer in scientific notation.

B) Determine the amount of heat (in kJ) associated with the production of 1.92 × 10⁴ g of NO₂ according to the following equation: 2 NO(g) + O₂(g)  2NO₂(g) ΔH = −114.6 kJ/mol

Enter your answer in scientific notation.

____x10___kJ

C) A quantity of 1.922 g of methanol (CH₃OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature rose by 5.34°C. If the heat capacity of the bomb plus water was 9.98 kJ / °C, calculate the molar heat of combustion of methanol.

_______kJ/mol

D) A piece of silver with a mass 384 g has a heat capacity of 91.0 J/°C. What is the specific heat of silver?

______ J/g x °C

Expert AnswerAn expert answer will be posted here

 

Post a question

Answers from our experts for your tough homework questions