Homework Answers
4. The standard heat of formation of P4O10(s) = -2984 kj = -2984000 kj/mole
The standard heat of formation of P4O10(s) = -713.193116 kcal = -713193.116 calories
i. e 713193.116 calories of heat is produced during formation of 283.886 gms of P4O10
15000 calories of heat is produced during formation of (15000*283.886)/713193.116 = 5.97 gms of P4O10
The mass of P4O10 used is 5.97 gms
5. When a system does work (w) on the surroundings, its internal energy decreases. In this case, work is taken as negative (-w). Now, if 'q' is the amount of heat absorbed by the system and 'w' is the work done by the system, then change in internal energy becomes
E
= q -w = 105000-96 = 104904 j = 104.904 kj
Add Answer to:
late the mass of P4010 produced along 15000. calories of 4. Calculate th heat. stem absorbs...
CH4(8)+ 202(g) CO2(g) + 2H2O(g) AH -890.3 kJ 3. Given: PSs(s) + 802(g) PAO10(s)+3SO2(g) AH -3676...
CH4(8)+ 202(g) CO2(g) + 2H2O(g) AH -890.3 kJ 3. Given: PSs(s) + 802(g) PAO10(s)+3SO2(g) AH -3676 k How much heat is produced from the burning of 7.00 g of PSs 4. Calculate the mass of P4O10 produced along 15000. calories of heat. 5. A system absorbs 105 kJ of heat from its surroundings and does 96.0 J of work. Calculate AE. 159
Determine the change in internal energy (AE) of a system that absorbs 745 J of heat...
Determine the change in internal energy (AE) of a system that absorbs 745 J of heat from its surroundings and performs 5 kJ of work on its surroundings. A. 740 J B. -4255 J C. 750 J D. 5745 J
is this correct? Determine the change in internal energy (AE) of a system that absorbs 745...
is this correct?
Determine the change in internal energy (AE) of a system that absorbs 745 J of heat from its surroundings and performs 5 kJ of work on its surroundings. O 740 J O-4255 J 750J o 5745 )
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61....
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61.6 J. b. 30.8 J. c. -61.6 J. d.-30.8 J. e. none of these 2. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P= 1 atm and T = 370 K? H2O(g) → H2O(1) a. q and w are negative. b. is positive, wis...
QUESTION 10 A system releases 7 J of heat. And the same time 12 J of...
QUESTION 10 A system releases 7 J of heat. And the same time 12 J of work is done on the system by the surroundings. What is the AU? 05 -13) 8) 07) O-36) -131 QUESTION 11 A system absorbs 41 of heat. And the same time the system does 6 J of work on the surroundings. What is the AU? O-9) -39) 35 ) 11) 14 ) -15) QUESTION 12 A system absorbs 8J of heat. And the same...
15. A system absorbs 575 J of heat and does 425 J of work. Calculate the...
15. A system absorbs 575 J of heat and does 425 J of work. Calculate the change in the internal energy, AE, of the system. XE final inital A)-150 J B) 150 J -1000 J DE = + w D) 1000 J 16. A system contracts from an initial volume of 15.0 L to a final volume of 10.0 L under a constant external pressure of 0.800 atm. The value of w, in J, is A) -4.0 J. 10-15 =-SL...
What is the overall change in internal energy for System A after both of the following...
What is the overall change in internal energy for System A after both of the following processes have occurred? Process 1: System A absorbs 10 kJ of heat from the surroundings and does 8 kJ of work on its surroundings. Process 2: System A releases 5 kJ of heat into the surroundings and 10000 J of work is done on the system. 2 kJ, ΔE = negative 7 kJ, ΔE = positive 33 kJ, ΔE = negative 9982 J, ΔE...
PRINT NAME: a metal that has a specific heat capacity of 0.387- absorbs 638 J of...
PRINT NAME: a metal that has a specific heat capacity of 0.387- absorbs 638 J of energy and rature increases from 25.0°C to 60.0*C, what is the mass of the metal? Show your work. (3 points) Write the condensed electron configuration for Ni 3. (3 points) What is AE for a system that gains 95 J of heat and does 33 ) of work? Show your work. 4. (2 points) Place the following atoms in order of increasing size. Ar,...
Someone please help solving this asap thanks! 1. Calculate AE and determine whether the process is...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
A 20.0g piece of metal with a specific heat L Thermochemistry 1. Calculate the total change...
A 20.0g piece of metal with a specific heat
L Thermochemistry 1. Calculate the total change in internal energy. AE of a system when 400 J heat is oplies to expanding O2(g) and the gas does 350 J of work on its surroundings. 2. Calculate the kinetic energy in .colories, and 6.00x10 m/s. of a portice (moss 9.11x109) 3. Calculate AH in kJ for reaction. CO CO given the following thermochemical data: 2CO(g) + 020) ► 2C0z9) AHP:. 566.1 kJ...
CH4(8)+ 202(g) CO2(g) + 2H2O(g) AH -890.3 kJ 3. Given: PSs(s) + 802(g) PAO10(s)+3SO2(g) AH -3676 k How much heat is produced from the burning of 7.00 g of PSs 4. Calculate the mass of P4O10 produced along 15000. calories of heat. 5. A system absorbs 105 kJ of heat from its surroundings and does 96.0 J of work. Calculate AE. 159
Determine the change in internal energy (AE) of a system that absorbs 745 J of heat from its surroundings and performs 5 kJ of work on its surroundings. A. 740 J B. -4255 J C. 750 J D. 5745 J
is this correct?
Determine the change in internal energy (AE) of a system that absorbs 745 J of heat from its surroundings and performs 5 kJ of work on its surroundings. O 740 J O-4255 J 750J o 5745 )
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61.6 J. b. 30.8 J. c. -61.6 J. d.-30.8 J. e. none of these 2. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P= 1 atm and T = 370 K? H2O(g) → H2O(1) a. q and w are negative. b. is positive, wis...
QUESTION 10 A system releases 7 J of heat. And the same time 12 J of work is done on the system by the surroundings. What is the AU? 05 -13) 8) 07) O-36) -131 QUESTION 11 A system absorbs 41 of heat. And the same time the system does 6 J of work on the surroundings. What is the AU? O-9) -39) 35 ) 11) 14 ) -15) QUESTION 12 A system absorbs 8J of heat. And the same...
15. A system absorbs 575 J of heat and does 425 J of work. Calculate the change in the internal energy, AE, of the system. XE final inital A)-150 J B) 150 J -1000 J DE = + w D) 1000 J 16. A system contracts from an initial volume of 15.0 L to a final volume of 10.0 L under a constant external pressure of 0.800 atm. The value of w, in J, is A) -4.0 J. 10-15 =-SL...
PRINT NAME: a metal that has a specific heat capacity of 0.387- absorbs 638 J of energy and rature increases from 25.0°C to 60.0*C, what is the mass of the metal? Show your work. (3 points) Write the condensed electron configuration for Ni 3. (3 points) What is AE for a system that gains 95 J of heat and does 33 ) of work? Show your work. 4. (2 points) Place the following atoms in order of increasing size. Ar,...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
A 20.0g piece of metal with a specific heat
L Thermochemistry 1. Calculate the total change in internal energy. AE of a system when 400 J heat is oplies to expanding O2(g) and the gas does 350 J of work on its surroundings. 2. Calculate the kinetic energy in .colories, and 6.00x10 m/s. of a portice (moss 9.11x109) 3. Calculate AH in kJ for reaction. CO CO given the following thermochemical data: 2CO(g) + 020) ► 2C0z9) AHP:. 566.1 kJ...
Most questions answered within 3 hours.
-
For a particular RLC series circuit, the capacitive reactance is
6.85 Ω, the inductive reactance is...
asked 48 seconds ago -
In an aqueous mixture of aluminum, lead, and iron salts, which
of these will be reduced...
asked 1 minute ago -
It is hypothesized that when homing pigeons are disoriented in a
certain manner, they will exhibit...
asked 15 minutes ago -
Copyright protection legislation provides protection for
original works
Select one:
a. until the author is 70...
asked 7 minutes ago -
The boards of 2 major telecommunications companies
recently agreed to a $16 billion merger that would...
asked 6 minutes ago -
What types of evidence are used to reconstruct the history of
ocean chemistry, including changes in...
asked 22 minutes ago -
Describe the steps in Project Planning and Scheduling
WBS
Network Diagram
Developing the Schedule
Preparing the...
asked 16 minutes ago -
Assume you are now 21 years old and
will start working as soon as you graduate...
asked 30 minutes ago -
In c++
What does operator overloading allow us to do
?
Why must the << and...
asked 30 minutes ago -
First, a constant force will NOT cause an object to accelerate
faster and faster; it will...
asked 34 minutes ago -
A 4.75 kg crate is suspended from the end of a short vertical
rope of negligible...
asked 44 minutes ago -
develop an automated invoice generator that helps a shop owner
to design their invoice. Problem 1...
asked 52 minutes ago