## General, Organic, and Biological Chemistry: Structures of Life (5th Edition)

a. 20. g of $LiNO_3$ solution b. 400. mL of $KOH$ solution. c. 20. mL of $HCO_2H$ (formic acid) solution.
a. $25\%$ (m/m) $LiNO_3$ solution : $$25 \space g \space LiNO_3 = 100 \space g \space solution$$ $$5.0 \space g \space LiNO_3 \times \frac{100 \space g \space solution}{25 \space g \space LiNO_3} = 20. \space g \space solution$$ b. $10.0\%$ (m/v) $KOH$ solution : $$10.0 \space g \space KOH = 100 \space mL \space solution$$ $$40.0 \space g \space KOH \times \frac{100 \space mL \space solution}{10.0 \space g \space KOH} = 400. \space mL \space solution$$ c. $10.0\%$ (v/v) $formic \space acid$ solution : $$10.0 \space mL \space formic \space acid = 100 \space mL \space solution$$ $$2.0 \space mL \space formic \space acid \times \frac{100 \space mL \space solution}{10.0 \space mL \space formic \space acid} = 20. \space mL \space solution$$