Unit 1-Chem Basics & Stoichiometry
Number of neutrons in an oxygen isotope with a mass number of 17
(Timed: 5 seconds)
What is 9?
Definition of miscible
What is: the ability of a liquid to be mixed with another liquid
Rate law for the following elementary step:
2H + O --> H2O
What is: rate = k[H]2[O]?
This element effuses at the highest rate as a gas
What is hydrogen?
This element has the highest ionization energy
What is helium?
RbNO3's primary bond type
(Timed: 10 seconds)
What is ionic?
Equation of titration equivalence point
What is: # of H+ ions * MA * VA = # of OH- ions * MB * VB?
(MAVA can be replaced with "moles acid")
Intermediate(s) and catalyst(s) in the following reaction:
2A + B --> A2B
A2B + C --> A2C + B
What are: A2B is the intermediate and B is the catalyst?
A 4.0 kg block of steel is heated. The amount of heat transferred into the steel is 6500 J. The specific heat of steel is 0.51 J/g C.
Change in the steel's temperature
What is 3.186 degrees C?
How bromine's PES graph would look different than selenium's (2 differences)
What is: bromine's PES graph would be shifted to the left and the last peak would be taller?
Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol.
The empirical and molecular formula for chrysotile
What are Mg3Si2H3O8 (empirical formula) and Mg6Si4H6O16 (molecular formula)
The following reaction balanced:
Cu+ (aq) + Fe (s)→Fe3+ (aq) + Cu (s)
What is: 3Cu+ (aq) + Fe (s)→3Cu (s) + Fe3+ (aq)?
Rate law for the following equation:
2A + B <--> A2B (fast)
A2B + C --> A2BC (slow)
A2BC + D --> A2BCD (fast)
What is:
Rate = k[A]2[B][C]?
In these pressure and temperature conditions, a real gas will act most stable
What are high temperature and low pressure?
This type of radiation causes molecules to vibrate
What is: infrared
_ K2MnF6 + _ SbF5 --> _ KSbF6 + _ MnF3 + F2
What is 2, 4, 4, 2, 1?
After adding excess silver nitrate to 0.900 g of an impure chlorine sample, 0.9805 g of AgCl were precipitated.
The percentage by mass chlorine in the initial sample.
What is 26.9%?
Assume that the half-life of a reaction is constant and k is 1.4 x 10-2 min-1
Reaction order and half-life length
What is first and 49.51 min?
Formation equation of C4H9O
What is:
4C (s) + 9/2H2 (g) + 1/2O2 (g) --> C4H9O?
Difference between zeff and z
What is: zeff is the effective nuclear charge, or the charge experienced by the outermost electron shell, and z is the nuclear charge, or the charge of the nucleus?
_S2 + _O2 --> _SO2
Number of SO2 liters that will be produced from 19.21g of O2 at STP
What is 13.4L?
Completed equation, complete ionic, and net ionic for the following reactants:
NaF +K2SO4
What is:
Molecular: 2NaF (aq) + K2SO4 (aq) --> Na2SO4 (aq) + 2KF (aq)
Total Ionic: 2Na+ (aq) + 2F¯ (aq) + 2K+ (aq) + SO42- (aq) --> 2Na+ (aq) + 2F¯ (aq) + 2K+ (aq) + SO42- (aq)
Net Ionic: No Reaction
The unit of k for this reaction is 1/s:
2H2O2 --> 2H2O + O2
The half-life is 45 minutes and the starting concentration of H2O2 is 0.110 M.
Concentration of H2O2 after 150 seconds
What is 0.106 M?
A 2.00L mixture of helium, nitrogen, and neon has a total pressure of 815 mmHg at a temperature of 255K. If the partial pressure of helium is 201 mmHg and the partial pressure of nitrogen is 351 mmHg, what mass of neon is present in the mixture?
What is 0.667g?
What is: 1s22s22p63s23p64s23d104p64d10?