### SigFig: 12.59

Posted:

**Sat Jan 19, 2019 8:21 am**The initial values given for the question were 0.0073 M of codeine and pKa of conjugate acid was 8.21. With that, I assumed there were 2 significant figures (0.0073).

The answer was: 1.5%, 3.96, 10.04

For 10.04, does ".04" count as two significant figures since it's after the decimal point? Or should it be 10.037 (this was the calculation I got), not counting the zero?

The answer was: 1.5%, 3.96, 10.04

For 10.04, does ".04" count as two significant figures since it's after the decimal point? Or should it be 10.037 (this was the calculation I got), not counting the zero?