If i change it by looking at it what type of change is it ? non impact
kinetic
physical
chemical

The answer is 1.82 j/g°c                  

Idon’t really understand the question i’m sorry i can’t

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