CHAPTER 6, QUESTION 2 PART B The tomato is dropped. What is the velocity, v , of
ID: 636290 • Letter: C
Question
CHAPTER 6, QUESTION 2 PART B
The tomato is dropped. What is the velocity, v, of the tomato when it hits the ground? Assume 91.4 % of the work done in Part A is transferred to kinetic energy, E, by the time the tomato hits the ground.
SLIDE 3, PART B
An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 30.0 atm and releases 63.6 kJ of heat. Before the reaction, the volume of the system was 7.40 L . After the reaction, the volume of the system was 2.40 L .
Calculate the total internal energy change, ?E, in kilojoules.
Explanation / Answer
Part(B):
Using first law of thermodynamic,
?E = Q + W
= -63.6 + 30×5×101.3/1000
= - 48.405 KJ
Q = negative, because heat realsed
Change in volume = 5 L