Dimensional Analysis
Micro Represents ___
10^-6
The group number for halogens is ____
17
How many electrons can occupy any single orbital?
2
Between red, green, and blue light, ____ has the greatest wavelength
red
What is the energy of a mole of photons of green light with the wavelength of 525 nm? (in kJ)
228 kJ
Convert 400000000001 to scientific notation AND give significant figures
4.00000000001x1011 (12 significant figures)
An ionic bond is formed between a ________ (positively charged ion) and an _______ (negatively charged ion).
cation, anion
What is the maximum number of electrons that can occupy an:
a. s orbital _____ b. the subshell of p orbitals _______ c. the subshell of d orbitals ______
2, 6, 10
Between X-rays and gamma rays, _____ have a greater frequency
Gamma rays
The work function of titanium is 6.94 x 10-19 J. What is the longest wavelength of electromagnetic radiation required to eject photoelectrons from a silver surface?
286 nm
1.37x105 meters to kilometers
1.37x102 kilometers
Determine the charges of each of the cations in the following structures.
NaCl
H2O
Fe2O3
1+, 1+, 3+
Write the short hand electronic configuration for Ni
[Ar] 4s23d8
Convert the following frequency to wavelength: 450 MHz
The work function of titanium is 6.94 x 10-19 J. What is the longest wavelength of electromagnetic radiation required to eject photoelectrons from a silver surface?
4.55 x10^-2 m
(4.27 + 6.1)(3.0008) =
Gives an answer with how many significant figures
Determine the mass in grams of 7.50 moles of molecular hydrogen.
15.15 grams of H2.
The subshell with the quantum numbers n=4, l=2 is
d
Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation?
1.66 x 10^-24 J
How many moles of photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy?
3 moles of photons
A large sport utility vehicle moving at a speed of 125 km/h uses gasoline at a rate of 16 L per 100 km. Assuming 1 km = .6214 miles and 1 gallon = 3.79 L, what does this correspond to in mi/gal? (Use the correct number of significant figures.)
15 miles per gallon
There are 2.47x1025 atoms of oxygen in a sample of calcium carbonate (CaCO3). Determine the number of atoms in the entire sample, the number of moles in the sample, and the mass of the sample.
1368 grams
State the number of possible electrons described by the following quantum numbers
a. n = 3, l = 0
b. n = 3, l = 1
c. n = 3, l = 2, ml = -1
d. n = 5, l = 0, ml -2, ms -1/2
2, 6, 2, not possible
Which of the following electronic transitions would result in the emission of a photon of lowest energy?
n=7 to n=14
n=11 to n=4
n=14 to n=7
n=14 to n=7
Calculate the energy of the red light emitted by a neon atom with a wavelength of 703.2 nm.
2.825x10^-19 J