Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
You have to remove 12,000 kJ/h from a refrigeration space at 4 oC and reject the heat into the surroundings at 30 oC.
a) How much work per hour (power) would you have to use if you have an ideal Carnot reverse heat engine?
b) If you have a vapor compression cycle using HCF-134a refrigerant instead, what is the minimum pressure would you have to achieve in the compressor in order to reject heat into the surroundings assuming that you need the refrigerant to be a minimum of 5 oC temperature higher than the surroundings at 30 oC throughout the condenser?
c) In class, we discussed the use of a turbine in a vapor compressor cycle instead of a throttle. If we had a non-ideal turbine, how does the fraction of vapor of the refrigerant change at the exit of the turbine compared to the use of an ideal turbine. Assume the same exit pressure. Explain answer (just a qualitative answer is sufficient.)
when 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction that has a 93.0% yield, what mass (g) of calcium nitride forms.
Calculate the molar concentration of illinic acid and of its conjugate base illinate ion (in moles/L; M) in a 3 M illinate buffer at pH 7.5. The pKa of illinic acid is 6.7.
A graduated cylinder contains 155 mL of water. A 15.0 g piece of iron (density = 7.86 ) and a 20.0 g piece of lead are added. What is the new water level in the cylinder?
A gas originally at 27 degrees celsius and 1.00 atm pressure in a 3.9 L flask is cooled at constant pressure until the temperature is 11 degrees celsius. determine the new volume of the gas and express your answer in Litre.
In an electrolysis experiment such as the one you will perform, 1.76 x 10^-3 moles of hydrogen gas were collected, and the metal electrode lost 0.1983 g. The equivalent mass of the metal is approximately what?
Consider a galvanic (voltaic) cell that has the generic metals X and Y as electrodes. If X is more reactive than Y (that is, X more readily reacts to form a cation than Y does),
Sketch the curves for (A) the titration of a typical weak acid (30.0ml of 0.10 M) with a strong base (0.10 M) and (B) the titration of a typical strong base
2 Al2O3(s) → 4 Al(s) + 3 O2(g) . ?H = +3339.6 kJ/mol What is ?H for the formation of one mole of Al2O3(s) from the elements?
In which conversion is an oxidizing agent required? a. CH3CH2CH2CH3
There are about 1,200,000 autos .each auto emits 3.1g NO2 and 1.6g CH4 per vehicle mile. Each auto travels 30 miles round trip per day. How much NO2 and CH4 in g/day is emmited in the air daily?
Commercial vinegar was tritrated with NaOH solution to determine the content of acetic acid (HC2H3O2). For 20.0 milliliters of vinegar, 32.0 milliliters of 0.500 molar NaOH solution was required. What was the concentration of acetic acid in the vi..
Hydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd