Respuesta :

Answer:

• → Mass = Volume × Density

• But density of water is 1000 kgm^-3

• Volume is 31.0 mL = 31.0 cm^3 = 0.000031 m³

[tex]{ \tt{mass = 0.000031 \times 1000}} \\ \\ { \boxed{ \tt{mass = 0.031 \: kg}}}[/tex]