Problem $5$: In the Figure below, the elevation $z_B$ is $3\mathrm{.}5m$ in the open piezometer tube $B$ and the fluids are at $20C.$ Determine the elevation $z_C$ in meters in the open piezometer tube $C.$

${}_{\text{a}\text{i}\text{r}}=(\frac{kg}{m^3})*g(\frac{m}{s^2})=12\frac{N}{m^3},{}_{\text{g}\text{a}\text{s}\text{o}\text{l}\text{i}\text{n}\text{e}}=(\frac{kg}{m^3})*g(\frac{m}{s^2})=6670\frac{N}{m^3},$

${}_{\text{g}\text{l}\text{y}\text{c}\text{e}\text{r}\text{i}\text{n}\text{e}}=(\frac{kg}{m^3})*g(\frac{m}{s^2})=12360\frac{N}{m^3}$