Which types of salts produce SO2 gas on reacting with acids?

 SO2 and SO3 are acidic oxides that react with bases in aqueous solutions to create sulfurous acid and sulfuric acid salts as these gases dissolve in water. In aqueous solution, SO2 and SO3 react with NaOH to form Na2SO3 and Na2SO4.

Explanation:

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.