- (Boyle's) A 25 L weather balloon on the ground has a pressure of 111 kPa but drops to 79 kPa as it rises. Find the new volume-

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

Number of molecules=(12.01+2x15.9994)/112 x na

The basic unit of a chemical element