Molar Mass
amu OR g/mol
If a compound has 3 electron domains, what is its parent shape and corresponding bond angle?
Trigonal planar and 120
Convert 3.00 mol of CO2 to molecules
1.81 x 10^24 molecules of CO2
Convert 36.0 g of H2O to molecules
1.20 x 10^24 molecules
How does the presence of a lone pair affect the shape of a molecule?
It decreases the bond angle because of their repulsion of like-charges
Calculate molar mass of CaCO3
100.09 g/mol
What is the difference between the parent shape and the molecular shape?
Molecular shape takes into account the repulsion of the lone pairs of electrons
Convert 4.50 x 10^23 molecules of H2O to moles
0.748 mol of H20
Convert 88.0 g of CO2 to molecules
1.20 x 10^24 molecules
Molarity is moles of solute per.......
liter of solution
Calculate the molar mass of H2SO4
98.08 g/mol
Is a trigonal pyramidal shape polar or nonpolar?
Convert 98.0 g of H2SO4 to moles
1.00 mol
Convert 1.81 x 10^22 molecules of C6H12O6 to grams
5.42 g
True or False:
Molecules like O3 and NO2- exhibit resonance
True
Calculate percent composition of each element in C6H12O6
C: 40.0%, H: 6.7%, O: 53.3%
Find the parent/molecular shape + bond angle of H2S
Parent = tetrahedral (109.5)
Molecular = bent (<109.5)
Convert 250 g of Na2CO3 to moles
2.36 mol
Convert 6.022 x 10^23 molecules of CH4 to grams
16.04 g CH4
Each atom wants to fill their ___ in a lewis structure and to be satisfied
Octet
Calculate percent composition of each element in C12H22O11
C: 42.1%, H: 6.5%, O: 51.4%
Find parent/molecular shape + bond angles of H3O+
Parent = tetrahedral (109.5)
Molecular = trigonal pyramidal (<109.5)
Convert 452 g of Fe2O3 to moles
2.83 moles
Convert 250g of Na2CO3 into atoms
1.42 x 10^24 atoms
Is SF4 polar or nonpolar?
HINT: S will exceed an octet
POLAR