What mass of mncl2 is produced when 0.091 g of cl2 is generated

What do you need with it’s not a question your just stating what it says

They make up examples of physical properties 

Answerbonded to an amino group(nh2);

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