The mass of a box measured by a grocer's balacne is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is(a) the total mass of the box. (b) the difference in the masses of the pieces to correct significant figures?

The mass of a box measured by a grocer's balacne is 2.3 kg. Two gold p

1.	The mass of a box measured by a grocer's balacne is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is(a) the total mass of the box. (b) the difference in the masses of the pieces to correct significant figures?
Answer» Solution :`D=m//V=4.63//1.1=1.2090gcm^(-3)=4.2gcm^(-3)` (`:.` V has only 2 significant DIGITS)