equivalencia:
[tex]1kg = 1000g[/tex]
[tex]1m {}^{3} = 1000l[/tex]
[tex] \frac{72.65kg}{1 {m}^{3} } \times \frac{1000g}{1kg} \times \frac{1 {m}^{3} }{1000l} = 72.65 \frac{g}{l} [/tex]
B)
[tex]d = \frac{m}{v} \\ m = d \times v[/tex]
[tex]m = (72.65 \frac{g}{l} )(1l) \\ m = 72.65g[/tex]
