CL1

Gold, one of the most sought-after metals in the world, has a

density of 19. 3 g/cm', a melting point of 1064 °C, and a spe-

cific heat of 0. 129 J/g °C. A gold nugget found in Alaska in

1998 weighed 20. 17 lb. (2. 4. 2. 6, 2. 7. 3. 3. 3. 5)

Gold nuggets, also called

native gold, can be found in

streams and mines.

a. How many significant figures are in the measurement of

the weight of the nugget?

b. Which is the mass of the nugget in kilograms?

c. If the nugget were pure gold, what would its volume be in

cubic centimeters?

d. What is the melting point of gold in degrees Fahrenheit

and kelvins?

e. How many kilocalories are required to raise the tempera-

ture of the nugget from 500. °C to 1064 °C?

f. If the price of gold is $42. 06 per gram, what is the nugget

worth in dollars?