A student is told the barometric pressure is known to be 1.13 atm. In her experiment she collects hydrogen gas in a graduated cylinder as described in this experiment. She finds the water level in the graduated cylinder to be 7.7 cm above the surrounding water bath.  What is the total pressure inside the graduated cylinder in torr?

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.