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barxatty [35]
3 years ago
12

Determine the number of:

Chemistry
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer: Ag:  2.79x10^22 atoms

              C atoms:  6.02x10^23 C atoms

Explanation:

5.0 grams of Ag is 0.0464 moles of Ag.  (0.0464 moles)*(6.02x10^23 atoms/mole) = 2.79x10^22 atoms Ag

(0.50 moles)*(6.02x10^23 molecules/mole)*(2 C atoms/molecule) = 6.02x10^23 atoms of C

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3 years ago
Which of the following for an object should be known to calculate its density
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4 0
4 years ago
During the isothermal heat addition process of a Carnot cycle, 900 kJ of heat is added to the working fluid from a source at 400
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Answer:

the entropy change of the fluid during the process process is is 1.337 kJ/K, the change for the source is -1.337 kJ/K and the total entropy change is 0

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since the temperature remains constant

ΔS =∫dQ/T=(1/T)*∫dQ = Q/T

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since the process is reversible, the entropy change of the universe (total entropy change)  is 0 (there is no entropy generation). thus

ΔS universe = ΔS working fluid + ΔS source = 0

ΔS source= -ΔS working fluid = -1.337 kJ/K

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3 years ago
How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?
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