Question

A5 L vessel contains two moles of O, and 5 moles of Co, at 400 K and the pressure in the vessel is P1. Using a narrow tube 2 L aqueous KOH solution is introduced into the vessel (to dissolve all CO2). The final pressure at the same temperature was approximately P2 (neglecting the aqueous tension). The ratio of P1/P2​

Answer 1

The modern atomic theory, proposed about 1803 by the English chemist John Dalton (Figure 1.5. 4), is a fundamental concept that states that all elements are composed of atoms. Previously, an atom was defined as the smallest part of an element that maintains the identity of that element.