11. Consider the following chemical reaction: CO2(g) + NaOH(aq)  ---------> Na2CO3(s) + H2O(l) CO2(g) + KOH(aq) --------> K2CO3(s) + H2O(l)     Carbon dioxide gas is bubbled into a 2.50  L. flask contains mixture of sodium hydroxide and potassium hydroxide.  After evaporation of water and drying the mass of the residues is 14.5 g. Calculate grams of sodium hydroxide in the mixture. The pressure of carbon dioxide gas is 855 mmHg and the temperature is 25 oC.  Na = 22.99 g/mole,  K = 39.10 g/mole,   H= 1.008 g/mole,  O = 16.00 g/mole, C = 12.01 g/mole  a.8.88 g b.1.19 g c.2.34 g d.3.48 g

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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.