A buffer solution is prepared by mixing 1.0 mole of HA and 1.0 mole of NaA into 1.0 L distilled water. Calculate the change in pH when 25.0 mL of 0.20 M NaOH is added into 500 mL of the buffer? Given Ka(HA) is 1.75×10^(-5) M

more infor would

a lot

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.