Review
Convert the following to moles: 6.74 g of nitrogen gas. 2.08 mol 4.16 mol 0.481 mol 0.241 mol none of the above
Convert the following to grams: 2.1 moles of hydrogen peroxide (H2O2). 71.4 g 0.014 g 16 g 71 g none of the above
Convert the following to number of molecules: 7.301 grams of H2. 4.585 x 1025 molecules 8.864 x 1024 molecules 2.181 x 1024 molecules 4.362 x 1024 molecules none of the above
What is the molar mass of aluminum oxide? 101.961 amu 112.944 amu 101.961 g/mol 112.944 g/mol none of the above
How many moles of oxygen are in 4.21 moles of water? 6.24 mol 2.11 mol 8.42 mol 6.24 mol  none of the above
 Posted on the board at the end of the block.
Homework

Standard(s)
 HSPS17.
 Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
 Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problemsolving techniques.
