Answer 1):- 1 cal = 4.184 J
q (heat) = +212 cal (heat given to the system) = +887.008 Joules
w (work) = -435 cal (work done by the system) = -1820.04 Joules
∆ E = 887.008 + (-1820.04)
∆ E = -933.03 J
General Chemistry I Southern California University of Health Sciences Worksheet 3-Thermochemistry According to the First Law...
General Chemistry I Southern California University of Health Sciences Perform the following conversions. Make sure your answer has the correct number of significant digits. 6. a) 5.00 mm to cm 66.3 m2 to mL b) c) 71.63 g/cm' to mg/dm General Chemistry I Southern California University of Health Sciences Liguid Unknown Results Unknown #: Trial 1: Density Mass Trial 2: Density Mass Trial 3: Density Mass Average density of liquid unknown Questions 1. If, unknown to you, your pipette was...
10. According to the first law of thermodynamics, the energy of the universe is constant. Does this mean that AE is always equal to zero? a. Yes, AE = 0 at all times, which is why 9 = -W. b. No, AE does not always equal zero, but this is only due to factors like friction and heat. c. NO, AE does not always equal zero because it refers to the system's internal energy, which is affected by heat and...
Lauc GENERAL CHEMISTRY GROUP STUDY SE The first 3 problems are to be submitted today. #1.(30pts, 15 pts each) (i) Consider a 100 meter high waterfall. If the decrease in potential energy of the water (.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m= mass, g = acceleration due to gravity = 9.81 m/s". The specific heat of water = 4.184 J/(g°C). () If a system absorbs 23.0...
GENERAL CHEMISTRY GROUP STUDY SB The first 3 problems are to be submitted today. #1.(30pts, 15 pts each) (c) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m-mass, g- acceleration due to gravity 9.81 m/s. The specific heat of water- 4.184 J/(g "C). (d) If a system absorbs 30.0 J of heat from...