User:M1ss1ontomars2k4/sandbox2

$${0.23 \mbox{ g TRIS} \over 19.59 \mbox{ mL HCl}} \times {\mbox{mol TRIS} \over 121.136 \mbox{ g TRIS}} \times {\mbox{mol HCl} \over \mbox{mol TRIS}} \times {1000 \mbox{ mL} \over \mbox{L}} \times {\mbox{M} \over {\mbox{mol} \cdot \mbox{L}^{-1}}}= 0.097 \mbox{ M HCl}$$ $${0.1959 \mbox{ g TRIS} \over 16.56 \mbox{ mL HCl}} \times {\mbox{mol TRIS} \over 121.136 \mbox{ g TRIS}} \times {\mbox{mol HCl} \over \mbox{mol TRIS}} \times {1000 \mbox{ mL} \over \mbox{L}} \times {\mbox{M} \over {\mbox{mol} \cdot \mbox{L}^{-1}}} = 0.09766 \mbox{ M HCl}$$ $${0.1803 \mbox{ g TRIS} \over 14.88 \mbox{ mL HCl}} \times {\mbox{mol TRIS} \over 121.136 \mbox{ g TRIS}} \times {\mbox{mol HCl} \over \mbox{mol TRIS}} \times {1000 \mbox{ mL} \over \mbox{L}} \times {\mbox{M} \over {\mbox{mol} \cdot \mbox{L}^{-1}}}= 0.1000 \mbox{ M HCl}$$