The density of osmium (the densest metal) is 22.57 g/cm3. If a
1.00-kg rectangular block of osmium has two dimensions of 4.00 cm x
4.00 cm, calculate the third dimension (in cm) of the block. Watch
significant figures.
Osmium is the densest of the naturally occurring elements with a
density of 22.59 g/cm3. You are presented with a cube of
what is claimed to be pure osmium, which measured 2.00 inches on a
side. What weight in pounds would you expect for such a cube of
pure osmium? 1 lb = 453.6 g; 1 in = 2.54 cm
Osmium (Os) is the densest naturally occurring element. a. What is the density of this element (in g/cm) if we know a single atom of osmium occupies a volume of 13.981 A3? b. What is the radius (in inches) of a sphere of osmium containing 2.831 mol of osmium atoms?
Iridium is essentially tied with osmium for the distinction of
being called the “densest element” with a density of 22.5 g/cm3.
What would be the mass in pounds of a 1.0 ft x 1.0 ft x 1.0 ft cube
of iridium? (1 lb = 453.6 g)
Pure iridium metal is one of the densest elements at 22.6 g/cm3
. Compute the settling velocities of spherical iridium particles of
the given diameters, dp, in the given fluids.
(a) dp = 2 μm in air (T = 293 K, P = 1 atm,
ρa = 1.2 kg/m3 , μa = 0.0181 g m-1
s-1 )
(b) dp = 100 μm in water (ρw = 1.0 g/cm3 ,
μw = 0.010 g cm-1 s-1)
The density of a certain metal is 3.594 g/cm3 and the metal atom
radius is 217.3 pm. If the metal crystallizes in a body-centered
cubic structure, which choice is closest to the atomic mass?
(a) 136.8 g/mol
(b) 273.5 g/mol
(c) 164.2 g/mol
(d) 184.9 g/mol
(e) 181.1 g/mol
Specific Heat Capacity Data Table:
Metal 1
Metal 2
Mass of the metal slug (g)
58.982
56.162
Color of slug
silver
Dark silver
Mass of the empty coffee cup (g)
3.318
3.318
Mass of water + coffee cup (g)
50.010
51.032
Mass of water (g)
46.692
46.692
Ti of metal (°C)
4.16
6.1
Ti of water (°C)
24.42
24.42
Tf (°C)
28.58
30.52
ΔT of metal (°C)
ΔT of water (°C)
Calculate the specific heat capacity of both metal slugs...
1.453 moles of a metal with a density of 10.49 g / cm3 (STP) and
a temperature of 23.35oF, is placed in a calorimeter isolated from
the environment that contains 87.35mL of pure ethanol (density
0.9988 g / mL) and that is at 50.50oF. a) Determine the equilibrium
temperature of the system.