olume Report Form Important Note: Be sure to record all digits displayed on the balance and to express each value on line 30 to the appropriate number of significant figures. Step #: Trial 1 Trial 2 (12) Mass of flask and contents 119.351 119.332 9 (21) Mass of flask and residue after reaction 119.017 119.032 9 (22) Mass of oxygen produced (23) Temperature of water(oxygen) 22.0 21.0 °C (24) Volume of water(oxygen) collected 247 244 ml (25) Atmospheric pressure in lab 250.0 250.0 mm Hg (26) Vapor pressure of water at the temperature reported in step 23 mm Hg (27) Pressure of dry oxygen (Pa) mm Hg (28) Calculated volume of dry oxygen at STP ml (29) Moles of oxygen collected moles (30) Standard Molar Volume of Oxygen L/mol (31) Average Standard Molar Volume of Oxygen L/mol (19)
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
Standart molar volume
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