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200
____________ said that electrons exist in energy packets called quanta
Planck
200
Draw and name the interaction that occurs between sulfur dioxide and He
Dipole-induced dipole interaction
200
_____________ did an experiment to prove the atom was mostly empty space and there is a positive center (the nucleus)
Rutherford
200
rank the following in order of LEAST to MOST soluble in oil:
NaCl, NH3, C3H8
NaCl < NH3 < C3H8
200
_____________ organized elements according to atomic mass
Mendeleev
300
Is CCl2O polar or non-polar? Explain your answer. If it is polar, draw the vectors and label the δ+ and δ- end
non-polar
300
Does AlF3 dissolve well in alcohols? explain
yes because it is ionic and alcohols are polar (ion-dipole interactions)
300
rank the following in order of LEAST to MOST soluble in water:
PCl5, NaNO3, SO2, Fe (s)
Fe (s) < PCL5 < SO2 < NaNO3
300
Which is the correct Lewis structure for CO and WHY?
A because the F.C on all the atoms is 0
300
does CO dissolve in water easily? explain
yes because it is polar and therefore H-bonds (dipole-dipole)
400
Rank the following in order of MOST to LEAST soluble in methane (CH4):
C2H2, HF, Cu (s), CO2
C2H2 > CO2 > HF > Cu (s)
400
Does SiBr4 dissolve well in oil? Explain
yes because it is non-polar and ''like dissolves like''
400
Write the chemical formula for each Lewis structure
A. FeO B. Fe2O3
400
Is SO4 2- polar or non-polar? Explain your answer. If it is polar, draw the vectors and label the δ+ and δ- end
non-polar 
400
calculate the average atomic mass of the germanium isotopes
72.71 amu
500
Which structure for acetate is the most stable and why?
A because the - charge is on the O instead of the C
500
The average atomic mass of rhenium is 186.21 amu. What is the mass of Re-187?
186.96 amu
500
What kind of intermolecular forces occur between molecules of CH4?
only LDFs
500
List the following in order of HIGHEST to LOWEST boiling point:
solid copper, CO, HCl, CCl2O
solid copper > HCl > CO > CCl2O
500
List 2 differences between a photon and an electron
* photon has no charge and electron is negative
* photon has no mass but electrons have a mass
* photons make up the electromagnetic spectrum and electrons make up atoms