Structures and Bonding
How many 2p-orbitals are there?
3
What is Avogadro's number?
6.02 x 1023
2Fe2O3 + 3C ----- 4Fe + 3CO2
What is the molar ratio of iron(III) oxide to carbon dioxide?
2:3
0.00501 has ____ sig figs
3
How many cloud shapes are there in the 3rd quantum energy level?
3 - 3s, 3p, 3d
What is heavier: 1 mole of oxygen gas or 1 mole of neon gas?
Oxygen gas, O2
CH4 + 2O2 ----- CO2 + 2H2O
How many moles of CO2 are produced from 8 moles of O2?
4 moles CO2
7.300 x 103 has ____ sig figs
4
In the molecule, NH4+, how many valence electrons are there?
8
The empirical formula of a compound is C2H3N. If it's molar mass is 246g/mol, what is the molecular formula?
C12H18N6
N2 + 3H2 ---- 2NH3
How many moles of NH3 are produced from 2 moles of N2?
4 moles NH3
The sum of 12.45 + 0.0012 + 4 will have ____ sig figs after the decimal
0
What VSEPR shape does CH3F take?
Tetrahedral
How many 10L jugs could you fill if you had 20 moles of nitrogen gas at STP?
48
C3H8 + 5O2 ----- 4H2O + 3CO2
How many moles of H2O are produced from 20 moles of O2?
16 mole H2O
The product of 1.23 x 0.001829 x 24 will have ____ sig figs
2
Name the types of intermolecular forces.
London Dispersion, Dipole-Dipole, and Hydrogen Bonding
A pancake recipe calls for the EXACT ratio of 2 eggs and 1/3 cups of melted butter. If you have 33 eggs, how much melted butter do you need to make the most pancakes?
16/3 cups
N2 + 3H2 ---- 2NH3
5 moles of N2 react with 12 moles of H2. Which reactant is the limiting reagent?
H2
(0.6767 + 6.7) x 6767 x 67 will have ___ sig figs
2