How to calculate the change internal energy

Assignment Help Chemistry
Reference no: EM13256643

Calculate the change internal energy (?E) for a system that is giving off 45.0 kJ of heat and is performing 855 J of work on the surroundings.

A. 9.00 x 102 kJ

B. -9.00 x 102 kJ

C. -44.1 kJ

D. -45.9 kJ

E. 44.1 kJ

Reference no: EM13256643

Questions Cloud

Games need to be sold in order for company to break-even : If total fixed costs are $50,460, how many games need to be sold in order for the company to break-even?
What is the maximum load possible without a heat sink : A small buck converter has 24 V input and 12 V output. The transistor has Rds(on) - 0.1 Ohm. The diode is modelled as a 1.0 V drop. Each device has junction to ambient Rtheta(ja) = 40 K/W and Tjunction
Which school of legal thought is represented : Anatole France said, "The law, in its amnesty, forbids rich and poor alike from sleeping under bridges." Which school of legal thought is represented by this quote?
Find what is the switching loss in the transistor : A boost converter has 5 V input and 12 V output at 60 W. The diode is ideal. The transistor requires 1 us to turn on and off. The switching frequency is 100 kHz. The storage components are large.
How to calculate the change internal energy : Calculate the change internal energy for a system that is giving off 45.0 kJ of heat and is performing 855 J of work on the surroundings.
A job specification : Which popular method of job analysis was pioneered by the U.S. Air Force? A job specification is:
What is the loss in each part if a second mosfet is added : A MOSFET is used in a boost-buck converter. The on-state loss is 4.2 W, and the switching loss is 2.8 W. The device is in TO-220 heat-sink package. it is desired to avoid a heat sink, and a parallel connection has been suggested.
How can the liquid molecules convert to vapor state : The concept of the formation of cavitation really confuses me. It is said that when the local static pressure in the liquid sometimes drops below the vapor pressure of the liquid, bubbles are formed which are called cavitation bubbles.
Tax liability or tax benefit : what willbe overall effect on net income after tax if the tax rate is 30%? Assume that any tax liability or tax benefit will be taken in the current year.

Reviews

Write a Review

Chemistry Questions & Answers

  State suitable substance to be sealed within the vial

Select a suitable substance to be sealed within the vial. (b) Within less than 10% error, what magnitude of pressures must the vial withstand?

  How many grams of this compound burn to release heat

If the heat of combustion for a specific compound is -1360.0 kJ/mol and its molar mass is 82.03 g/mol, how many grams of this compound must

  What is the equilibrium constant for the reaction

At equilibrium a 2L vessel contains .410 mol of H2, .130mol of Br2, and 36.0 mol of HBr. What is the equilibrium constant for the reaction at this temperature?

  Define a sample of carbon monoxide gas

A sample of carbon monoxide gas whose mass is 7.75 g is heated from 25 oC to 166 oC at a constant pressure of 5.52 bar.

  What is the half-life of this radioactive isotope

copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?

  State the potassium hydrogen phthalate in the reagent bottle

How would the observed molarity of your experiment be affected by the following circumstances. (i.e. would it be higher than the true value, lwer than the ture vaule or remain unchaged?)

  State what was the potential versus sce

A corrosion potential of -0.299 V versus SCE was measured for a corroding alloy. what was the potential versus SCE?

  Compute the moles of oxygen gas produced

calculate the moles of oxygen gas produced fro 4.40mol H2O2. 2H2O2(i) ---->2H2(g) + O2(g) Express your answer with the appropriate.

  Compute the work in joules when water vaporizes

Calculate the work in Joules when 2.5 mols of water vaporizes at 1 atmosphere pressure and 25 degrees C. The work is done in pushing back the atmosphere.

  Which graduated cylinder would have the greatest volume

the density of aluminum is 2.70 g/cm3 and the density of chronium is 7.19 g/cm3. if equal masses of aluminum and chronium are trasnferred in equal volumes of water in separate graduate cylinders, which graduated cylinder would have the greatest vo..

  Explain the acid dissociation of both hcl and hf

Illustrate (draw) the thermodynamic cycles for the acid dissociation of both HCl and HF. Classify each cycle as exergonic or endergonic. Do your calculated values agree with the observed strengths of each acid in water?

  What is the diluted concentration

portion of that solution is diluted by adding 165 mL of water. What is the final concentration? Assume the volumes are additive.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd