Calculate [oh−] in each aqueous solution at 25∘c, and classify each solution as acidic or basic. part a [h3o+]= 9.9×10−9 m express your answer using two significant figures.

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.