1) Avogadro's number is a) 6.02 x 1023 b) 6.23 x 102 c) 6.02 x 103 d) 6.23 x 1023 2) To convert a Celsius temperature to Kelvin, you would a) Subtract 273.15 b) Add 273.15 c) Multiply 273.15 d) Do nothing, as the two scales are equivalent 3) As the volume of confined gas decreases at the constant temperature, the pressure exerted by the gas  a) Remain the same b) Decreases c) Increases d) Fluctuates 4) According to Charles' law, as the temperature of a given sample of gas at constant pressure is increased, the volume will .... a) Increases b) Remain the same c) Decreases d) None of the above 5) Assume that the temperature remains constant. How can you increase the pressure of a gas? a) Increase the container volume b) Decrease the container volume c) Add more molecules of the gas d) None of the above 6) The Ideal Gas law allows you to calculate which quantity that is not possible in Boyle's or Charles' law? a) Number of moles b) Volume c) Temperature d) Pressure 7) State a condition of real gaseous that behave close to ideal gas. a) At high pressure b) At low temperature c) At low pressure d) None of the above 8) Real gas deviates from ideal gas behaviour in the following conditions: a) Low pressure, low temperature b) High pressure, low temperature c) High pressure, high temperature d) Low pressure, high temperature 9) Calculate the volume of a gas sample at 5 atm, if the volume of the gas at 1 atm is 50L. The temperature of the gas is constant. a) 20 L b) 5 L c) 15 L d) 10 L 10) A 5L sample of mixed gaseous is kept in a container at a room temperature of 27oC. Calculate the volume of the mixed gaseous when the temperature is increased to 60oC. a) 5.55 L b) 5.05 L c) 0.55 L d) 5.00 L

Gas Law

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