Question

The density of osmium is reported to be 22,610 kg/m3. What is the density in g/cm3? What is the mass of a block of osmium measuring 10.0 cm x 8.0 cm x 9.0 cm? Please give the electronic configuration and orbital diagram of osmium. Is this metal paramagnetic or diamagnetic?

Answer #1

The density of a certain type of plastic is 0.83
g/cm3. If a sheet of this plastic is
10.0 m long, 1.0 m wide, and 1 cm thick, what is its
mass?

Assuming that water has a density of exactly 1 g/cm3, find the
mass of one cubic meter of water in kilograms. (b) Suppose that it
takes 10.0 h to drain a container of 5700 m3 of water. What is the
"mass flow rate," in kilograms per second, of water from the
container?

An unknown metal is found to have a density of 7.1800 g/cm3 and
to crystallize in a body-centered cubic lattice. The edge of the
unit cell is found to be 0.28864 nm .
Calculate the atomic mass of the metal.
please show all formulas and units!

What is the volume (in cm3) of a 18.9 g piece of
metal with a density of 19.6 g/cm3?
A.
0.964
B.
6.65
C.
19.5
D.
0.425

A metal crystallizes in a face-centered cubic cell and had a
density of 11.9 g/cm3. If the radius of the metal atom is 138 pm,
what is the molar mass of the metal? What metal is it?

A 10cm×10cm×10cm wood block with a density of 730 kg/m3 floats
in water.
What is the distance from the top of the block to the water if
the water is fresh?
If it's seawater? Suppose that ρ=1030kg/m3.

If the density of copper is 8.92 g/cm3, what is the mass of a
copper BB (sphere) with a diameter of 4.500 mm?

Part A
Calculate the buoyant force of air (density 1.20 kg/m3 ) on a
spherical party balloon that has a radius of 14.6 cm .
Express your answer to three significant figures and include
appropriate units
Part B
If the rubber of the balloon itself has a mass of 2.00 g and the
balloon is filled with helium (density 0.166 kg/m3 ), calculate the
net upward force (the “lift”) that acts on it in air.
Express your answer to three...

A factory produces steel with a density of 8050 kilograms per
cubic meter (kg/m3), which is shaped into spheres. Each sphere has
a mass of 500.0 grams (g). What is the diameter of each sphere, in
units of centimeters (cm)? Hints: the definition of density is an
object’s mass divided by its volume (p = M/V), and the volume of a
sphere is given by V = (4/3)πr3.

A 10.0-pound ball of radius of 260 cm is thrown into seawater
(density 1029 kg/m3).
(d) If the ball floats on seawater, what
percentage fraction of the ball’s volume is below the water
surface?
(e) What is the maximum diameter a ball with
m = 10.0 pound so that it does not float on water but
sinks to the ground?

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