Respuesta :

The mass of sample = 10 g

Further explanation  

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  , g/ml

m = mass , g

v = volume  , ml

Density is 5 g/ml and sample is 2 ml,so :

ρ = 5 g/ml

V = 2 ml

The mass :

[tex]\tt mass=\rho\times V\\\\mass=5~g/ml\times 2~ml\\\\mass=\boxed{\bold{10~g}}[/tex]