### Day 34 - The Mole - 02.22.16

 Update N/A Review Convert the following to moles: 6.74 g of oxygen gas.2.38 mol O20.42 ol O20.421 mol O2107 mol O2none of the aboveConvert the following to grams: 2.1 moles of water.0.12 g H2O38 g H2O8.6 g H2O0.026 g H2Onone of the aboveConvert the following to number of molecules: 7.301 grams of CH4.0.4550 mol CH42.740 molecules of CH40.455 mol CH42.740 * 1024 molecules of CH4none of the aboveWhat is the molar mass of sodium oxide?61.979 amu38.999 amu54.998 g/mol61.979 g/molnone of the aboveHow many moles of hydrogen are in 3.12 moles of water?6.24 mol H3.12 mol H1.56 mol H6.24 mol H2none of the above Exit Ticket Posted on the board at the end of the block.HomeworkStudy! Help Request List Standard(s) HS-PS1-7.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 problem-solving techniques.