1. Weighing gases lab

2. Results 1.82346.82345.00CO 2 1.32346.32345.00O2O2 0.0835345.08345.00H2H2 Mass (g)Flask+gasFlaskGas # of molecules Moles (mol)Molar mass (g/mol) Gas 2.49 x 10 22 0.041444.01CO 2 2.48 x 10 22 0.041332.00O2O2 2.49 x 10 22 0.04132.02H2H2 1.82 1.32 0.0835 Density(g/L)

3. 1.Law of Combining gas volumes: When measured at the same temp. and pressure, volumes of gaseous reactants and products of chemical reactions are always in simple ratios of whole numbers. Avogadro's theory: Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. 2.Yes. All 1 L flasks (same temp & pressure) held the same number of molecules. O2O2 H2H2 3.O 2 molecules are16x more massive (see molar masses): 4.The mole ratios in the balanced chemical equation.

4. # of molecules Moles (mol) Molar mass (g/mol) 2.49 x 10 22 0.041316.05CH 4 2.49 x 10 22 0.041444.01CO 2 2.48 x 10 22 0.041332.00O2O2 2.49 x 10 22 0.04132.02H2H2 0.66345.66345.00CH 4 1.82346.82345.00CO 2 1.32346.32345.00O2O2 0.08345.08345.00H2H2 Mass (g) Density(g/L) Flask +gasFlaskGas 5.

5. Avogadros Theory: Graphical Representation + hydrogenchlorine hydrogen chloride + carbon monoxideoxygencarbon dioxide + nitrogen hydrogenammonia For more lessons, visit www.chalkbored.com www.chalkbored.com