For calculation of volume of gas which is in some vessel or the room find their volume geometrical methods. It is connected with the fact that gas always occupies all volume provided to it. In case the amount of substance or mass of gas in normal conditions is known, find gas volume, having increased amount of substance by 0.0224 m³. If gas is not in ideal conditions, use the special equations.
It is required to you
- roulette or range finder, thermometer, manometer, Mendeleyev's table.
Instruction
1. Calculation of volume of gas geometrical metodamiyesl a vessel is filled with gas, find its volume. For example, if the room has the parallelepiped form, determine its length, width and height in meters by a roulette or a range finder. Multiply the received results and receive the gas volume in the room expressed in m³. If a vessel cylindrical, measure its diameter, square it, increase by 3.14 and divide height of a cylinder which measure too, the turned-out number into 4.
2. Calculation of volume of the known mass of a certain gas in normal usloviyakhesl gas is in normal conditions (0ºС, 760 mm. articles), its weight and chemical formula is known, determine his molar weight by Mendeleyev's table, considering the fact that at the majority of plain gases of a molecule diatomic. Then divide the mass of gas into its molar weight, and increase the received number by 0.0224. Receive gas volume in m³. There is also other way. If the weight and a type of gas is known, according to the special table find its density and divide the mass of gas into its density. Receive gas volume. If the mass of gas is given in kilograms, take density in kilograms on cubic meter if in grams – in grams on centimeter cubic. Respectively volume either in meters, or in centimeters cubic will turn out.
3. Calculation of mass of gas through uravneniyaesl the known mass of gas is in actual practice, find amount of its substance for what divide weight into molar weight. Measure by the manometer gas pressure, and the thermometer its temperature. Express pressure in Pascals, and temperature in Kelvins. Increase temperature relation to pressure by amount of substance of gas, and number 8.31 the volume of this gas in m³ will be result.