1 / 5

Weighing gases lab

Weighing gases lab. Results. Gas. Flask. Flask+gas. Mass (g). Density(g/L). H 2. 345.00. 345.08. 0.0835. 0.0835. O 2. 345.00. 346.32. 1.32. 1.32. CO 2. 345.00. 346.82. 1.82. 1.82. Gas. Molar mass (g/mol). Moles (mol). # of molecules. H 2. 2.02. 0.041 3. 2.4 9 x 10 22.

Ava
Télécharger la présentation

Weighing gases lab

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Weighing gases lab

  2. Results Gas Flask Flask+gas Mass (g) Density(g/L) H2 345.00 345.08 0.0835 0.0835 O2 345.00 346.32 1.32 1.32 CO2 345.00 346.82 1.82 1.82 Gas Molar mass (g/mol) Moles (mol) # of molecules H2 2.02 0.0413 2.49 x 1022 O2 32.00 0.0413 2.48 x 1022 CO2 44.01 0.0414 2.49 x 1022

  3. O2 H2 • 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”. • Yes. All 1 L flasks (same temp & pressure) held the same number of molecules. • O2 molecules are16x more massive (see molar masses): • The mole ratios in the balanced chemical equation.

  4. Mass (g) Density(g/L) Gas Flask Flask +gas H2 345.00 345.08 0.08 O2 345.00 346.32 1.32 CO2 345.00 346.82 1.82 CH4 345.00 345.66 0.66 Molar mass (g/mol) Moles (mol) # of molecules H2 2.02 0.0413 2.49 x 1022 O2 32.00 0.0413 2.48 x 1022 CO2 44.01 0.0414 2.49 x 1022 CH4 16.05 0.0413 2.49 x 1022

  5. +  hydrogen chloride hydrogen chlorine +  carbon monoxide oxygen carbon dioxide +  nitrogen hydrogen ammonia Avogadro’s Theory: Graphical Representation For more lessons, visit www.chalkbored.com

More Related