What is the mass of mercury in a barometer containing 100.0 mL mercury?

Question

The sp gr of mercury is 13.6

Answer 1

m = ρV

 

V = V_Hg = 100.0 mL

 

ρ = ρ_Hg = (SG_Hg)ρ_H2O = (13.6)(1.000 g/cm³) = 13.6 g/cm³

 

m_Hg = ρ_HgV_Hg = (13.6 g/cm³)(100.0 mL)

 

Recall 1 cm³ = 1 mL

 

m_Hg = 1360 g