You only take into account of significant figures after you do the calculation. Doing it midway will often throw your result way off from the theoretical.
One significant figure is needed since 0.002 is the least accurate measurement.
(22.4g - 8.3g)/(1.143mL - 0.002mL)
-----------^ 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.