2007-03-09 03:46:41 · 10 answers · asked by ravichandran n 1 in Science & Mathematics ➔ Chemistry
19.3 g·cm−3
2007-03-09 03:50:45 · answer #1 · answered by Orinoco 7 · 0⤊ 0⤋
Density of Gold is
19.3 g·cmâ3
2007-03-13 06:27:24 · answer #2 · answered by irfan 3 · 0⤊ 0⤋
Do the movies depict the weight of gold bars accurately?
How heavy is a gold bar?
In the movies, how easily do they show someone handling a bar of gold? Should you be able to pick it up easily? How many gold bars do you think you can carry? In this exercise, you will calculate the weight in pounds of a gold bar.
Densities of Common Elements and Compounds
Substance
Density
grams per mL or cc
Water
1.00
Aluminum, Al
2.70
Iron, Fe
7.80
Gold, Au
19.30
Mercury, Hg
13.5
Mathematical Definition of Density
The formal definition of density is mass per unit volume. Usually the density is expressed in grams per mL or cc. Mathematically a "per" statement is translated as a division. cc is a cubic centimeter and is equal to a mL Therefore,
Density =
mass =
g/mL
volume
Example: How heavy in pounds is a gold bar pictured on the right. The dimensions of gold bars held in Federal Reserve Banks is:
7 x 3.625 x 1.75 inches
Solution:
First, convert the measurements in centimeters.
1 inch = 2.54 cm
7 inches x
2.54 cm =
17.78 cm
1 inch
Similarly, 3.625 in = 9.21 cm;
1.75 in = 4.45 cm
Find the volume of the gold bars in cubic centimeters Volume =
17.76 cm x 9.21 cm x 4.45 cm = 727.9 cc
Calculate the weight of the gold bar using the density of gold, which is: 19.3 g/cc
Use the density as a conversion factor:
19.3 g = 1 cc
727.9 cc x
19.3 g =
14,048 g
1 cc
Convert from grams to pounds.
1 lb = 454 g
14,048 g x
1 lb =
30.94 lb
454 g
So the next time you see gold bars in the movies, look to see how easily they appear to pick them up. Thirty pounds is a good amount of weight that is not casually picked up.
2007-03-09 13:23:16 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Search Internet under.
Metals.
2007-03-09 11:51:00 · answer #4 · answered by minootoo 7 · 0⤊ 1⤋
19.30 grams per ml
2007-03-09 11:50:47 · answer #5 · answered by Hk 4 · 0⤊ 0⤋
19.5 grampercub iccentimetre
2007-03-12 06:07:31 · answer #6 · answered by rajjkamal2009 2 · 0⤊ 0⤋
13.1 gm/cc
2007-03-10 00:58:01 · answer #7 · answered by divatstating s 1 · 0⤊ 0⤋
19.7 kg / L
2007-03-10 08:18:05 · answer #8 · answered by Anonymous · 0⤊ 0⤋
5.6
2007-03-09 11:50:40 · answer #9 · answered by VIKRANT D 1 · 0⤊ 0⤋
19.3GRAM/cm
2007-03-09 11:58:05 · answer #10 · answered by Anonymous · 0⤊ 0⤋