(22.4g - 8.3g)/(1.143mL - 0.002mL)

=

14.1g/ 1.140

-----------^ that arrow is pointing to that zero cause that is where my first problem occured. do i add that 0? cause in the orignal denominator the 1.143 has 3 significant values after the decimal and .002 has 3 numbers after the decimal but only 1 significant. So do i leave it as 1.140 or 1.14 or 1.1??

14.1g/1.140mL = 12.4g/ml cause 14.1 = 3sig figs... i think.