Explain what is the annual cost of operation

Assignment Help Chemistry
Reference no: EM13154787

It is recommended that home refrigerators maintain an internal temperature of around 40°F for safe food storage. Assuming that the typical refrigerator operates at 20% of the ideal efficiency and that electricity costs $0.10 / (kW hr), what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F

Reference no: EM13154787

Questions Cloud

What is the partial pressure of the nitrogen gas : A mixture of O2, CO2, and N2 has a total pressure of 697. torr. In this mixture the partial pressure of O2 is 143. torr and the partial pressure of CO2 is 197. torr. What is the partial pressure of the N2 (in torr)?
What is the objective of accounting standards : A sound foundation is necessary for success in any task from building a house to putting on make-up. In terms of U.S. Accounting Standards, it is also necessary to have a sound foundation, referred to as the conceptual framework. Let's discuss it ste..
Discuss the steps the oligopoly should take to address : Assume that a very competitive start-up enters the market in direct competition with the oligopoly you described in the e-Activity, initially gaining a 12% market share.
Probability density functions : If a random sample of size 2 is observed, demonstrate that a UMP test of size 0.10 for the above test exists. Also decide the form of the rejection region.
Explain what is the annual cost of operation : what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F
Problem in trading securities : On Jan1, 2009, Nana Co. paid $100,000 for 8000 shares of Papa Co. common stock. These securities were classified as trading securities. The ownership in Papa Co. is 10%.
Becky company began a defined benefit pension plan : Becky Company began a defined benefit pension plan on January 1, 2010. No prior service credit was granted to employees. Service costs amounted to $34,000 in 2010 and $37,000 in 2011. All contributions to the fund were made at the end of the year. At..
Categories of adjusting entries-types of adjustments : Distinguish between the two categories of adjusting entries and identify the types of adjustments applicable to each category
Calculate the energy and wavelength : Calculate the energy and wavelength associated with an a particle that has fallen through a potential difference of 4.0 V.

Reviews

Write a Review

Chemistry Questions & Answers

  The rate constant increases by a factor

The rate constant increases by a factor of 2.00 when the temperature is increased from 80 C to 115 C. estimate the arrhenius activation energy.

  What is the value of x

Phosphorus, P, is combined with flourine F2, to give a gaseous compound with the formula PFx. If you start with 2.982 grams of P and isolate 12.129 grams of PFx, what is the value of x?

  What is the new volume of the gas

Occupies 6.0 cubic meters at a pressure of 1.5 atm. The pressure is then expanded to 2.0 atm. The temperature remaining constant, what is the new volume of the gas?

  Determine the equilibrium mole fractions of all species

occurring at 800 K and 1atm. The initial mixture contains 1 mol of SO2 and 0.5 mol of O2. The reaction mixture can be considered to be an ideal gas.

  Determine theoretical yield and percent yields of ethanol

Ethanol (C2H5OH) is produced from the fermentation of sucrose in the presence of enzymes. C12H22O11(aq) + H2O(g) > 4 C2H5OH(l) + 4 CO2(g)

  What pressure will the sample exert

A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 ?C.What pressure will the sample exert when it is compressed to 250 mL and cooled to -25 ?C?

  What volume would 305.4 grams of mercury occupy

The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy

  Calculate the concentration in ppm of nitrite

A 10mL sample of aquarium water was treated with reagents to form a colour, and after dilution to 100 mL was found to have an absorbance of 0.162. calculate the concentration in ppm of nitrite in the aquarium water.

  The relationship if any of the lattice energy of compounds

The relationship (if any) of the lattice energy of compounds such as ZnO vs. H3BO3 vs. their respective solubilities. For instance, at neutral pH and standard conditions

  Solve virial equation

Solve Virial equation (the virial equation expanded in 1/ Vm )are expansions in p and 1/Vm,respectively

  What is the rate constant for this reaction

The reactant concentration in a first-order reaction was 6.80×10-2 M after 10.0 s and 4.40×10-3 M after 65.0s . What is the rate constant for this reaction?

  Calculate the weight of the gas

22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure

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