Thermodynamics
A system does work on its surroundings, the sign that corresponds to this work when calculating the energy change in the system is.
What is negative?
Calculate the average reaction rate given the following data:
At t=0, [CO2]=1.5M
At t=15 min, [CO2]=1.0M
At t=30 min, [CO2]=0.5M
What is 0.033M/min?
The type of cell produces electricity by "harnessing" the energy present in electrons flowing from a spontaneous reaction.
What is a galvanic cell or voltaic cell?
The conjugate base of NH4+.
What is NH3?
Subatomic particles involved in Nuclear chemistry include proton, neutron, electron, alpha particle and this.
What is a positron?
The sign of the corresponding energy involved when heat is transferred to the system.
What is positive?
Endothermic or Exothermic?
CO2(g) -> CO2(s)
What is exothermic?
What is eletrolytic?
A Bronsted acid is a substance that donates this.
What is a proton?
When writing a nuclear symbol in a reaction the superscript denote this number.
What is the mass number?
The specific heat of iron is 0.451 J/g*C. Calculate the kJ of energy needed to raise 100. g of iron from O C to 100 C.
What is 4.51 kJ?
Name the precipitate:
NaOH + Fe(NO3)2
What is Fe(OH)2?
The process that occurs at the anode in an electrolytic cell.
What is oxidation?
A Lewis acid is a substance that accepts this.
What is a pair of electrons?
The electron released in a beta emission originates from here.
What is the nucleus?
If delta H of a reaction is negative and delta S of a reaction is positive, the reaction is said to occur ...
What is spontaneously?
The amount of energy required to initiate a reaction is known as this.
What is activation energy?
Calculate the Ecell given the reaction:
Al(s) + 3Ag+(aq) <->Al3+(aq) + 3Ag(s)
Al3+ + 3e- -> Al E=-1.66V
Ag+ + 1e- -> Ag E=0.80V
What is 2.46V?
Identify the Lewis acid from the following:
CH4, SO3, HC2H3O2, Ca2+
What is Ca2+?
This is the highest energy type of nuclear radiation.
What are gamma rays?
A reaction that is solely in a gaseous phase and produces more moles of gas than it started with will have an increase in this.
What is Entropy?
The molecular formula for glucose is C6H12O6, what is the empirical formula for glucose?
What is CH2O?
An electrochemical cell works according to the reaction:
Zn + HgO <-> ZnO + Hg
Give the reaction that occurs at the cathode.
What is Hg2+ + 2e- -> Hg?
The reaction between an acid and a base is known as this type of reaction.
What is neutralization?
Carbon-14 has a first-order rate constant of
1.21 x 10-4/years, Carbon-14 dating found that the concentration of carbon-14 present in a sample believed to have originated from the Ming Dynasty (1368-1644) was 96% of the normal amount. Is the artifact from the Ming Dynasty or an imposter?
What is "it is an imposter"?