The heat of fusion for silver at 960.8
is 88.3 kJ/kg and the specific heat of silver is 0.235 kJ/kg 
What is the energy needed to melt 100 grams of silver starting at 0
?
A. 40.5 kJ
B. 31.4 kJ
C. 25.4 kJ
D. 19.5 kJ
E. 13.7 kJ
B. 31.4 kJ
You might also like to view...
A capacitor is connected in series with a resistor and a switch. With the switch open, the capacitor is charged to 9.0 V. When the switch is closed, how long will it take for the voltage across the capacitor to drop to 6.0 V if the time constant of the circuit is 4.0 s?
A. 0.3 s B. 1.2 s C. 1.6 s D. 2.7 s E. 12 s
Assuming the conditions ripe for life and intelligence abound in the Galaxy, what factor limits the number of galactic civilizations?
A) the lack of metals for technology B) the number of supernova explosions C) the expansion of the Universe D) the average survival time of the civilizations E) the speed of technological development
When a hydrogen atom's electron goes from an energy state of n = 2 to n = 1,
a. the radius of the electron's orbit is unchanged. b. the radius of the electron's orbit is increased. c. the radius of the electron's orbit is decreased. d. the radius of the electron's orbit is infinite.
A 10.0 kg mass is attached to the end of a 2.00 m brass rod with a 1.00 mm diameter. If the tensile modulus of brass is 
then the period of the simple harmonic motion of the mass is
A. 0.175 sec. B. 0.105 sec. C. 0.133 sec. D. 0.145 sec. E. 0.167 sec.