Dimensional Analysis
The largest diamond in the world is the yellow-brown Golden Jubilee Diamond. Its mass is 545.67 carats. What is the mass of this diamond in grams? (Given: 1 carat = 200 milligrams)
109.13 g
Determine the full electron configuration for Iodine.
1s22s22p63s23p64s23d104p65s24d105p5
Determine the energy per photon of g-ray photons at 2.15 x 10-5 nm.
Extra: Subtract/Add points to the other team.
9.24 x 10-12 J/Photon
What are all of the potential elements that the following set of quantum numbers could represent if the quantum numbers are identifying the highest energy electron in the atom.
n = 3, l = 2
Al, Si, P, S, Cl, Ar
An atom has an atomic mass of 15 amu and an atomic number of 4. How many neutrons are in the atom?
11 neutrons
The summit of Mount Washington in New Hampshire is famous for its awful weather. It experiences hurricane-force winds an average of 110 days per year. On April 12, 1934, a wind gust of 231 miles per hour was recorded at the summit. What is this wind speed in meters per second? (Given 1 km = 0.6214 mi).
103.26 m/s
Which element has a greater electronegativity, silver or chlorine?
Extra: Double Points
Chlorine
When an electron moves from the n = 2 to n = 4 shell is this absorption or emission? Is the magnitude of the energy change greater or less than n = 4 to n = 6?
Extra: Close your eyes when sliding.
Absorption; greater than
What orbital is an electron in if its first two quantum numbers are n = 3 and l = 2?
d orbital
A Phosphorus atom becomes a 3- charge through some sort of chemical reaction. Is this a cation or anion? Is the ion larger or smaller than the parent atom?
Extra: Close your eyes when you slide.
Anion, larger
The silicon used to make computer chips has to be extremely pure. For example, it must contain less than 3 x 10-10 moles of phosphorus per mole of silicon. What is the level of this impurity expressed in atoms of phosphorus per mole of silicon?
1.8 x 1014 atom P/mol Si
What is the effective nuclear charge of Si?
+4
Consider the following types of electromagnetic radiation:
A) the gamma rays produced by a radioactive nuclide used in medical imaging
B) radiation from an FM radio station at 93.1 MHz on the dial
C) a radio signal from an AM radio station at 680 kHz on the dial
D) the yellow light from a sodium vapor streetlight
E) the red light of a light emitting diode such as in a calculator display.
Arrange them in order of increasing wavelength.
A < D < E < B < C
What happens if you increase the principal quantum number and keep the angular momentum constant?
The orbitals increase in size.
How many electrons are in a Ca+2 ion?
18 electrons
If an object has a density of 8.65 g/cm3, what is its density in units of kg/m3?
Extra: Add/Subtract points to other team.
8.65 x 103 kg/m3
Determine the abbreviated electron configuration of Polonium, Po.
[Xe] 6s24f145d106p4
The energy required to dislodge electrons from the surface of Sodium via the photoelectric effect is 275 kJ/mol. What wavelength of light (in nm) has sufficient energy per photon to dislodge an electron from the surface of Sodium?
435 nm
There is something wrong with the set of quantum numbers below. Make the correction.
n = 4, l = 2 ml = -3 ms = -1/2
Extra: Switch signs of your slide.
ml = -2, -1, 0, 1, 2
Find the number of atoms in a copper rod with a length of 9.85 cm and a radius of 1.05 cm.
The density of copper is 8.96 g/cm3.
2.896 x 1024 atoms
What volume of gold (in cm3) would be equal in mass to a piece of copper with a volume of 125 cm3? (Given: density of copper 8.940 g/mL, density of gold 19.320 g/mL, 1 mL = 1 cm3)
Extra: Double points.
57.8 cm3
Order the following elements in order of increasing size.
Li, K, Al, N
N, Li, Al, K
The work function of Rubidium is 3.46 x 10-19 J. If an electron ejected from the surface of Rubidium has a velocity of 6.68 x 105 m/sec, what is the wavelength of light that hit the Rubidium surface in nm?
362 nm
Identify a potential set of quantum numbers for the highest energy electron in a silver atom.
n = 4, l = 2, ml =-2, -1, 0, 1, 2, ms = +1/2, -1/2
What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have a mass of 179, and 35 have a mass of 180.0?
178.55 amu