General Inorganic Chemistry Flashcards
Who is the person behind carbon dating method?
Willard Libby
Paint is what type of colloid?
Sol/Pure Colloid/Colloid Suspension
This isotope is particularly useful for both diagnostic and therapeutic work with the thyroid gland.
I-131 (Iodine-131)
Use the VSEPR theory to determine the molecular geometry of selenium tetrafluoride
see saw
trigonal bipyramidal
Which of the following is a nonpolar covalent compound?
Bond between non metals, check EN (EN difference must be less than or equal to 0.4)
diatomic elements (H2, N2, Cl2)
CO2
Benzene C6H6
Carbon tetrachloride CCI4
Methane CH4
Ethylene C2H4
Hydrocarbon liquids
Organic molecules
Who discovered radioactivity?
Henri Becquerel (March 1,1896)
What is a buckyball?
A hollow spherical molecule composed of a large number of carbon atoms (60)
Who discovered neon?
Sir William Ramsay and Morris Travers
In what time will a 1mg rubidium become 0.6 mg? t1/2 = 48.8 billion years.
N/No=0.5^t/to
35.96
Carbon-14 decays into Nitrogen-14 through beta decay. What will be the ratio of Carbon14 to Nitrogen-14 after three half-lives?
1:7
Tungsten has a work function of 4.52 eV. What is the kinetic energy (J) of an ejected electron if the metal surface is irradiated by a 200 nm light?
1.68 eV or 2.69 x 10^-19 J
What is the activity (Ci) of a 5.0 mg radioactive Sr-90, with a half-life of 28.8 years?
0.69
What percentage of the substance will be decayed after 30 minutes if its half-life is 47 minutes?
35.75 %
Consider the reaction of 2.0 g ammonia with 4.0 g oxygen to form NO and water. How many grams of NO was formed?
3 g
Consider the reaction of 2.0 g ammonia with 4.0 g oxygen to form NO and water. How many grams of the excess reactant remained unreacted?
0.3 g NH3
