How do models provide a practical solution for some scientific research? Check all that apply?

the ratio of the conjugate base to the acid required to attain the desired ph.

there are 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.