Solid sodium reacts with liquid water to form hydrogen gas according to the equation 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g) What is the pressure (in atm) of hydrogen gas in the 20.0 L headspace of a reactor vessel when 3.06 kg sodium is reacted with excess water at 50.0 °C? 1 4 7 +/- 2 5 8 . 176 3 6 9 atm X C x 100

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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.